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73979396 Split Desktop Manual

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Split-Desktop ® Version 3.0 Help Manual
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  • Split-Desktop Version 3.0

    Help Manual

  • Copyright

    This documentation copyright 2010 Split Engineering, LLC. All rights reserved.

    Split-Desktop software copyright 2010 by Split Engineering, LLC

    Split-Desktop is the registered trademark of Split Engineering, LLC Split-Online is the registered trademark of Split Engineering, LLC

    Excel is registered by Microsoft Corporation Windows is a registered trademark of Microsoft Corporation

  • Welcome to Split-Desktop 3.0!........................................................................................... 1 How to Contact Us .................................................................................................................... 1 What do I need to get Started? ................................................................................................ 1 What is different in this version of Split-Desktop? ................................................................ 2

    Quick Start.......................................................................................................................... 3 1. Install...................................................................................................................................... 3 2. Get a License.......................................................................................................................... 3 3. Run Split-Desktop................................................................................................................. 3 4. Start Fresh ............................................................................................................................. 3 5. Open an Image ...................................................................................................................... 4 6. Delineate................................................................................................................................. 5 7. Scale........................................................................................................................................ 6 8. Edit Delineations ................................................................................................................... 7 9. Estimate Fines ....................................................................................................................... 8 10. Get Results!.......................................................................................................................... 9 11. Export Results ................................................................................................................... 10 12. Save the Project................................................................................................................. 11 13. Enjoy Automation ............................................................................................................. 11

    How Split-Desktop Calculates Size.................................................................................. 12 Start with Good Images.......................................................................................................... 12 Particle Delineation & Editing............................................................................................... 12 Scaling ...................................................................................................................................... 12 Fines Estimation...................................................................................................................... 12 Divining the Third Dimension................................................................................................ 12 The Split-Desktop Pipeline..................................................................................................... 13

    Image Acquisition Techniques ........................................................................................ 14 Safety First............................................................................................................................... 14 Operating the Camera ............................................................................................................ 14 Image Resolution..................................................................................................................... 14 Capture Representative Samples........................................................................................... 14 Sampling Methodology ........................................................................................................... 16 Image Scale .............................................................................................................................. 16 Image Lighting ........................................................................................................................ 19 Number of Images to Acquire................................................................................................ 21

  • Installing and Licensing .................................................................................................. 24 Installing .................................................................................................................................. 24 Licensing .................................................................................................................................. 27

    Geography of Split-Desktop............................................................................................. 29 Running Split-Desktop ........................................................................................................... 29 Split-Desktop Projects ............................................................................................................ 29 Three Important Windows..................................................................................................... 30 The Display Window: Images or Results .............................................................................. 31 Images Window....................................................................................................................... 33 Layout Window....................................................................................................................... 35 Selecting Images ...................................................................................................................... 36 Printing .................................................................................................................................... 37

    Working With Images ...................................................................................................... 38 Adding Images to the Project................................................................................................. 38 Image Status ............................................................................................................................ 38 Viewing Images ....................................................................................................................... 39 Delineating Images.................................................................................................................. 48 Manual Edits to Delineations ................................................................................................. 50 Marking Areas of Fines .......................................................................................................... 51 Masking Parts of an Image .................................................................................................... 53 Scaling Images ......................................................................................................................... 56 Selecting Image Areas............................................................................................................. 61 Editing Images......................................................................................................................... 65 Automated Image Processing................................................................................................. 70

    Estimating Fines .............................................................................................................. 72 Fines Factor ............................................................................................................................. 72

    Working with Results ....................................................................................................... 76 Results Options........................................................................................................................ 76 General Options ...................................................................................................................... 77 Graph Content......................................................................................................................... 80 Graph Colors ........................................................................................................................... 83 Legend and Logos ................................................................................................................... 85 Text Content ............................................................................................................................ 87 Sieve Series............................................................................................................................... 90

  • FXO Series ............................................................................................................................... 93 Reference Curves .................................................................................................................... 94 Exporting Results.................................................................................................................... 97

    Organizing with the Layout Window............................................................................. 101 Anatomy of the Layout Tree ................................................................................................ 101 Selecting Images with the Layout Window......................................................................... 102 Creating the Layout Tree ..................................................................................................... 105 Adding Branches ................................................................................................................... 105 Modifying and Deleting Branches ....................................................................................... 106 Adding Images....................................................................................................................... 106 Image Properties and Status ................................................................................................ 106

    Scripting ......................................................................................................................... 107 Who Should Use Scripting? ................................................................................................. 107 Introduction to IronPython.................................................................................................. 107 Three Ways to Use Scripting................................................................................................ 107 The Interactive Python Interpreter..................................................................................... 109

  • 1

    Welcome to Split-Desktop 3.0!

    Split-Desktop is a digital image analysis tool for measuring the size distribution of fragmented rock. Using one or more digital images as input, it produces the calculated size distribution as output.

    How to Contact Us

    On the Web www.spliteng.com

    Tucson, Arizona USA Office 110 S. Church Ave, Suite #8312 Tucson, AZ 85701 USA

    Email: [email protected] or [email protected] Phone: (520) 327-3773 Fax: (520) 326-7532

    Santiago, Chile Office Calle General Salvo #331, Oficina 201 Casilla 16807 - Correo Providencia, Santiago ~ Chile

    Email: [email protected] Phone: 56-2-5978200 Fax: 56-2-5978206

    What do I need to get Started? Split-Desktop can be installed from CD or from the web. The CD includes sample images and projects to help get you started. If you do not have the CD with the sample images, or if you would just rather use your own images for exploring Split-Desktop, they need to be in jpg, bmp or tif format and should adhere to the guidelines for taking good images.

  • 2

    What is different in this version of Split-Desktop? If you have used previous versions of Split-Desktop, you may not even recognize this release as the same software. The user interface is totally new, and the process of calculating size distribution results has been streamlined.

    Previous versions of Split-Desktop created a lot of files and then left file management up to you. Split-Desktop 3.0 now uses a self contained project file that includes all of your images, settings and output options. Binary files are no longer part of Split-Desktop.

    Delineations are simpler and usually better than in previous versions. The sometimes confusing array of delineation parameters has been reduced to one simple slider bar that will increase or decrease the amount of delineation.

    Scaling has been simplified and the scales are now visible in the image. You can insert one to three scales anywhere in the image, and modify or delete them later.

    The calculations have been improved too. Not only are they faster, but the combining formula used for merging multiple images into one result has been updated and brought more in line with the typical field practice.

  • 3

    Quick Start

    1. Install Install the latest version of Split-Desktop from the CD or over the Web.

    Split-Desktop Installer

    2. Get a License If you have already purchased a hardware key (dongle) for Split-Desktop 3.0, insert it now and skip to the next step. Otherwise, contact Split Engineering to purchase a full license or to request a free temporary demo license. Without a license, Split-Desktop will run as a viewer which does not allow you access to most of the features covered in this Quick Start.

    3. Run Split-Desktop Start Split-Desktop from any of the shortcuts created by the installer. You will find them on the Windows desktop and on the Start Menu under Programs | Split Engineering.

    Shortcut Icon

    4. Start Fresh If you have already been using Split-Desktop, you may have changed some of the options. For the benefit of this Quick Start reset the software by doing the following:

  • 4

    Start With a New Project From the menu, select File | New Project.

    Reset System Options From the menu, select Tools |Options. Ensure that only the first and last options are checked, as shown here.

    Reset System Options

    5. Open an Image A sample image is installed in the Samples folder, beneath the Split-Desktop installation folder. If you already have your own images of muck piles or other appropriate images, you can start with one of those instead.

    Open the image by dragging it into Split-Desktop, or from one the menu options.

  • 5

    Sample Image Opened

    6. Delineate Select Image | Delineate from the menu. When the Delineation Settings dialog appears, press OK.

    Delineation Settings

    View Delineations Right-click on the image to toggle the delineation display. You can also use the comma and period keys to toggle.

  • 6

    Display Delineations

    7. Scale If you are using a sample image, or any other image with red scaling balls, you can use automatic scaling to locate the scales. If thats not the case, skip below and use manual scaling.

    Automatic Scaling For automatic scaling. select Image | Find scales from the menu. When the Find Scales Settings dialog appears, press OK.

    Find Scales Settings

  • 7

    When the scales have been located, they will appear as shown here with a length indicator and circular masks. Carefully inspect the location of the scales, and make any adjustments necessary.

    Scales Found and Masked

    Manual Scaling With the scale tool you can insert one to three scales anywhere on your image where there is an object of known length. From the toolbar or from the menu with Tools | Scale tool and use the mouse to locate the two ends of the scale. You can modify the position of the scale at any time by selecting it.

    Scaled Manually

    * You can change an images scales at any time. The results will be automatically updated after changes.

    8. Edit Delineations Use the eraser and brush tools to manually edit the delineations. The automatic delineations from step 7 are a good start, but you will usually want to improve your results by manually editing the delineations.

  • 8

    Improve Delineations with Manual Edits

    * You can change an images delineations at any time. The results will be automatically updated after changes.

    9. Estimate Fines Preview the section on estimating fines in an image. To change the images Fines Factor from the default of Medium, select Image | Properties from the menu and move the slider bar to the desired amount.

    * You can change an images Fines Factor at any time. The results will be automatically updated after changes.

    Set Fines Factor

  • 9

    10. Get Results! Once the image is delineated and scaled, you are ready to look at the results. Select the Results Display from the menu item View | Results display or from the toolbar .

    Switch to Results Display

    Results Display

  • 10

    To modify the way results are displayed, select the menu item Results | Results options. There are too many options to cover here, so see the section on Results for more information.

    11. Export Results If you are using a demo license, you cannot do this.

    Excel Spreadsheet If you have Microsoft Excel installed, you can export directly to an Excel spreadsheet. The easiest way to do this is to click on the toolbar button and a new spreadsheet will pop up. You can also select the menu item Results | Save as, and for Save as type select Excel file. This saves the spreadsheet file first and then opens the spreadsheet with your data.

    Results Exported to Excel

    Copy/Paste with the Clipboard From the menu, select Edit | Copy text or Edit | Copy graph. The text or bitmap can be pasted into any application that supports the format.

  • 11

    12. Save the Project Save your Split-Desktop project with the menu item File | Save project or the toolbar button . All of the work you have done is saved in the project, plus any changes you have made to the way your data is displayed.

    13. Enjoy Automation You can save some time by configuring Split-Desktop to automatically delineate and scale images when they are added to the project. This works best when you have multiple images with similar settings for delineation and finding scales.

    Enable automated image processing by going back to the same System Options menu we looked at before. From the menu, select Tools |Options and selectively check the options inside Perform on added images.

    Automation Options

  • 12

    How Split-Desktop Calculates Size

    Start with Good Images Size calculation starts with one or more images of broken rock. See the section on image acquisition for information on proper photography techniques. Images can be cropped to remove areas not containing broken rock. Interior areas of non-rock are excluded from the calculation by masking them.

    Particle Delineation & Editing In a partially automated step, the rock part particles in the images are delineated to create their 2-dimensional boundaries. This step is called partially automated because the algorithms for finding particle edges have not yet advanced to the point where human editing of the boundaries is not required, or at least suggested, to provide reliable results.

    In addition to outlining the particle boundaries, the manual editing step should mask out any non-rock areas of the image.

    Scaling Scaling requires at least one identifiable object of known size in each image. Most images should have at least two scaling objects to account for the slope of the rock pile, and as many as three scaling objects can be used to more accurately define the average planar orientation of the image.

    Fines Estimation Particles smaller than a certain size can no longer be reliably delineated in an image. For the automated delineation, this size is approximately 16 square pixels. Particles below this size are lumped together as fines. Measuring the fraction of fines in an image can be an intractable problem so Split-Desktop uses a user-defined fines estimation value.

    Divining the Third Dimension The two-dimensional particle outlines are transformed into three-dimensional sieve sizes with time tested, proprietary algorithms. From there it is a simple matter to calculate the histogram frequencies of the measure sieves sizes of all particles.

  • 13

    The Split-Desktop Pipeline From the operators perspective, getting results from Split-Desktop follows a regular sequence of steps, or pipeline.

    The pipeline is shown here with both required and optional steps. The color coding is used to show the required order of the operations; the order of the operations with the same color is not important. For example, you can perform the blue colored operations in any order, but you cannot advance to the yellow colored steps until you are done with the blues.

    The Split-Desktop pipeline

    Acquire Images

    Reduce Resolution

    Crop Image

    Delineate

    Scale Edit Delineations

    Show Results

    Required

    Optional

    Export Results

    Fines Estimation

    Add images to project

  • 14

    Image Acquisition Techniques

    Safety First Please practice common sense if working around heavy machinery that is in operation and/or if working close to muckpiles or an active face. Please obey all current safety rules and regulations! Not only the safety rules and regulations of your company, but also of the prevailing governmental agency or authority responsible for regulating safety and health in your industry.

    Operating the Camera All images should be in focus. To eliminate side-to-side distortion, all pictures should be taken perpendicular to the line of the toe of the slope.

    Image Resolution In most cases you should use the highest resolution offered by your camera, and then reduce the resolution to more reasonable values if required. See the section of limiting image resolution.

    Capture Representative Samples Make sure the largest scale images really show the overall size range present. Include the patches of fines that are actually visible and not just the largest boulders or the results from the analysis may be biased toward the coarse end.

    You must get close enough so that the rock fragments are distinguishable in the image. The image below was taken too far away to define the particles well. Much "wasted" space in the image, i.e. space that is not going to be analyzed such as sky and foreground in front of the pile. Not only does this wasted space lack material to be sized, but this wasted space will waste your time later in unnecessary editing of the image.

  • 15

    Taken too far away

    Good Image. slope angle is clear, even light with few shadows, and nice range in size

    Not so good image... The one large rock leads to a biased sample

  • 16

    Sampling Methodology It is important to capture your images in a systematic manner so that the calculated results truly represent the size distribution of the material of interest. Consistent methods should be applied to all samples that you collect so that you can make valid comparisons between sites of interest. Try to develop (and Split Engineering will assist you) a consistent method for acquiring images at various scales and various locations and adhere to it in order to avoid introducing artificial bias or scatter in the size information.

    You should make an attempt to capture images over the entire exposed surface of the pile or one continuous section of the pile with minimal overlap so that the results are not biased by omission or by repetition. Remember that only what is visible can be sized, and that the surface may hide variations of the material beneath.

    The outside surface of a muck pile before digging should not be used to represent the material within the pile but may be important by itself. The surface of an unexcavated muck pile may be quite different from the material within the pile that is exposed while digging. It is recommended for muck piles to let the shovel advance to about the middle of the shot before acquiring images that can be deemed representative of the blasted material. If you are only able to obtain images from the exposed surface before digging, make sure you only compare those to similar sets of data. It is probably not good practice to compare the distribution of the outside of an unexcavated pile to the inside of a partially excavated pile.

    The amount of fines is determined by the images at the largest scale. The distribution of fines is calculated from the zoomed in images of fines. Make sure that the largest scale images include the patches of fines that are actually visible and not just the largest boulders or your results may be in error.

    You should be careful of changes in geology within the area of interest, since most investigators are interested in the size distribution within a geology.

    Image Scale

    For material piles, you may need to take images of different scale in order to obtain a decent sample of the material:

    1) Large scale including boulders and areas of fines. The horizontal length of the image should be about 20 ft (7 m). These images will contain the topsize material and will adequately sample the coarse material as well as provide indications of the large areas of fines. 2) Medium scale of typical regions of 2 to 10 inch (5 to 25 cm) material. The horizontal length of the image should be about 8 ft (3 m). These images will provide a closer look at the medium size material (material in size between the topsize and the fines) and will

  • 17

    lower the fines cutoff value (the value at which the software stops measuring and begins to estimate).

    3) Small scale which are zoomed in images of representative samples of the finer material. The horizontal length of the image should be about 1.5 ft (0.5 m). These images will try to measure the fine material to give an indication of the size distribution within the large areas of fines that may be present on the surface of the large scale images. Many zoomed-in fines images would need to be acquired to change the distribution of the entire sample, but these images can help with measuring the fines and lowering the fines cutoff value as opposed to using the fines estimation equation in the software.

    Take approximately equal numbers of images at each scale although if you are not interested in the size distribution of the smallest scale of material and are happy to accept a Schumann or Rosin-Rammler curve in this range, you may omit taking the zoomed-in images.

    Large Scale (Far Range)

  • 18

    Medium Scale (Medium-Range)

    Small Scale (Zoom-in)

  • 19

    Image Lighting

    Be conscious that shadows and direct sunlight do not interfere with the overall image appearance as heavy shadows mask particle edges.

    Images with uneven light (i.e. bright sunlight on one portion with a shadow cast across it) will not delineate well and may require heavy editing later. The wide range of pixel values hinders the effectiveness of the edge detection algorithms.

    Overcast days actually provide more consistent lighting due to fewer shadows.

    EXAMPLES The following grayscale image has distinct areas of intense light and heavy shadowing. This image will most likely not delineate well and will require more manual editing.

    Poor Lighting

  • 20

    The following image is better than the image above, but still has areas of uneven light. Notice the darkness below the lower scaling ball as compared to the very light looking particles in the center of the image.

    Better Lighting

    The image below has even light throughout the image.

    Good Lighting

  • 21

    Number of Images to Acquire

    The number of images required to calculate the size distribution of a given sample of material is not fixed and varies from situation to situation. The number of images to acquire depends on:

    1) the physical size of population of material in question; and 2) the rock size fraction that is of interest (i.e. do you need images at all three scales to calculate a complete distribution curve? Or, are you most interested in oversize and will accept an estimation of finer material?).

    Taking these two key issues into consideration should lead you to the correct number of images to acquire for your sample.

    Contact Split Engineering to discuss methods for determining a significant sample for conveyor belt material as well as calibration for the finer, or hidden material.

    Physical Size of Material to be Measured If what is on the surface of the material in question is deemed to be representative of the entire population of material, then images covering the entire surface area of the material should be taken. A key consideration in assessing the surface area is the homogeneity of the material on the surface. If the entire pile looks similar in size on each exposed face, then extra images of the same material will probably not result in better size information. However, more images in a sample will not hurt. If the surface area does expose varying size fractions, then images of the entire surface should be acquired.

    Again, when imaging muckpiles and only acquiring a single set of images as a representative sample of the pile, it is recommended to acquire images after the shovel has advanced towards the middle of the pile as the surface of the blast is rarely representative of the fragmentation inside the pile.

    Size Fraction of Interest As previously recommend, images should be acquired at different scales (large scale/far range, medium scale/medium range and small scale/zoom-in). This allows actual data to be measured at different scales that will eventually be merged together in one cumulative size distribution.

    For example, if you are only interested in oversize material, you can stand back and take large scale - far range images of the entire surface that will capture those large particles (12 inches or 30cm plus or higher). From a distance away from the pile, the Split software will not be able to detect and delineate mid-size particles (5 to 8 inches or 13 to 20 cm or so) or smaller with only the far range image and will estimate for what it cannot detect. For every scale image, there is a cut-off point where the Split imaging software cannot detect (delineate) any smaller particles. Below that point is the fines estimation.

  • 22

    Depending on the scale of the image, the fines estimation may be for fairly large particles, not only the size of what is normally considered to be fines. The fines are distributed below the cutoff using a Schumann or Rosin-Rammler distribution, the slope of the curve below the cutoff is calculated from slope of the curve just above the cutoff point.

    Basically, if estimation is not acceptable for smaller size fractions, acquire the medium and small scale images. The Split software will merge the entire sample together as one size distribution curve and the size cutoff and fines estimation will be lower.

    IMAGE ACQUISITION EXAMPLES

    In the above image: Very large particles in this medium range image. There is no need to zoom further in and acquire another image as the particles are clear and distinguishable in the image. This image would have a rather large fines cutoff size. The image is also taken rather close to the pile, you can tell by the large change in apparent size of the two 10" balls. A better image would have been collected had the photographer, stepped further back and zoomed in.

  • 23

    In the above image, far range picture captures largest particles, but loses resolution on the finer particles, particularly between the scaling balls. A medium scale image, as shown below, can be acquired without moving the scaling balls to obtain better resolution on the smaller particles. Zoom even further in to achieve resolution on the smaller particles to the bottom left of the top scaling ball. If you are happy to accept an estimation of those particles based on the slope of the curve using the large scale and medium scale images, than omit acquiring the small scale zoom-in image

  • 24

    Installing and Licensing

    System Requirements Operating System Split-Desktop is supported on the following Microsoft Windows operating systems:

    Windows 7 Windows Vista Windows XP Windows Server 2003 Windows Server 2008 (see special instructions)

    Hardware

    Required hardware CD/DVD drive or Internet connection for installation Free USB port for the protection key (required for the full version)

    Recommended hardware 2 gigabytes RAM

    Installing Split-Desktop can be installed with the Split-Desktop CD or with the online installer available from the company website at www.spliteng.com. To keep the online installer small for faster downloads, it does not include all of the features and pre-requisites that are available on the CD version.

    If you need assistance obtaining a CD or downloading from our website, please contact one of our offices.

    Installing from the CD Insert the installation CD into your CD/DVD drive. Depending on how you have Windows set up, the Split-Desktop installer may start automatically. If it does not, browse to the root of the CD folder on your computer and run setup.exe. Follow the installation wizard as directed below.

  • 25

    Installing from the Web Use any Internet browser to visit our website at www.spliteng.com. From there go to the Downloads section to locate the Split-Desktop installer. When you have saved it to your own computer, run the setup program as directed below.

    The web installer does not include the pre-requisite packages that may need to be installed on your computer. If your computer requires any of these packages, the installer will attempt to download them from the Internet; therefore it is important to attempt the installation only on computers with an Internet connection. If you experience any problems downloading the pre-requisites, please contact your IT administrator to ensure that your local network is set up to allow this kind of download.

    Installation Options Your first interaction with the installer will be your opportunity to select the language. The language selected affects both the installer program and the Split-Desktop software. Currently we support English and Spanish language options. The language of the Split-Desktop interface can be changed at any time with this option.

    Select the language

    After you have had the chance the read the license agreement and additional installation information in the Readme file, you can select the destination folder of the installed software.

  • 26

    Select the destination folder

    Special Instructions for Windows Server 2008 Installing Split-Desktop on Windows Server 2008 may result in the error message shown below.

    Error on Windows Server 2008

    If this happens, first ensure that your account has administrator privileges and then start the Server Manager (Start Menu | Administrative Tools | Server Manager). Select Features, then Add Features, and check the box for .NET Framework 3.0 Features.

  • 27

    Adding .NET Framework 3.0 Features to Windows Server 2008

    Continue with the wizard to install the .NET Framework 3.0 features, and then run the Split-Desktop setup program again.

    Licensing A license is required to use all of the features of Split-Desktop. Without a license, Split-Desktop will run in the limited viewer mode where many of the features are disabled.

    To purchase a license or to request an evaluation demo, contact Split Engineering at any of the locations here.

    Hardware vs. Software License Split-Desktop licenses are delivered with either a hardware protection key, also known as a dongle, or with a Softlock activation code. The hardware key is generally the most flexible license medium because it can be moved to any computer, whereas the activation code works only on the computer for which it was generated. Not all license options are available with both types of license. The summary table below spells this all out.

    Upgrade Licenses from Previous Versions Some licenses held on hardware protection keys from older versions of Split-Desktop can be upgraded to run this latest version. Plug the protection key into the computer and start Split-Desktop. You will be given instructions on how to perform the upgrade.

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    Demo Evaluation License The demo evaluation allows you to use Split-Desktop for a limited time. All of the processing features are available in the demo, but printing and exporting your results is disabled.

    Summary of Licensing Options

    Feature Unlicensed Viewer

    Demo License

    Academic License

    Full License

    Open projects Yes Yes Yes Yes View results Yes Yes Yes Yes Open new images No Yes Yes Yes Modify projects No Yes Yes Yes Save projects No Yes Yes Yes Print No No Yes Yes Export data (e.g. to Excel) No No Yes Yes Watermark on output Yes Yes Yes No Hasp hardware license No No No Yes Softlock license No Yes Yes No

  • 29

    Geography of Split-Desktop

    Running Split-Desktop The installer puts a shortcut to Split-Desktop on your Windows desktop. You can also run it from the Start Menu, under Programs | Split Engineering | Split Desktop 3.0.

    Split-Desktop Shortcut Icon

    Selecting the Language The interface language of Split-Desktop is selectable as an installation option. To change the language after installation, select the menu option File | Select language.

    Selecting the language

    Split-Desktop Projects You are always working with a project when you are using Split-Desktop. Projects include the images and their delineations, plus the various options for calculating and displaying results. When you open a project, you will see everything exactly as it looked when you saved the project.

    Split-Desktop projects can be shared by copying one project file (*.desk) and, with just a few exceptions, projects appear exactly the same to anyone who opens it, regardless of how theyve configured their personal copy of Split-Desktop.

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    A Project is a Disk File Split-Desktop projects are a single file which can be saved to disk and copied just like any other file. The basic operations to open and save a project are on the File menu and the toolbar, as shown here.

    Basic project operations on the File menu and toolbar

    Automatically Load the Previous Project To configure Split-Desktop to automatically open the last-used project each time you execute the program, select Tools | Options from the menu and check the box Load last project on startup.

    When to make a new Project The maximum size of a project is limited by aspects of the operating system, such as memory consumption and the size of the disk file. The answer of when to make a new project really depends on your needs.

    You could possibly put all of your work in one project and use the Layout Window to help keep it organized, however that could result in a very large project. Generally, images that you want to use together should be kept in the same project. For example images that might be combined into one result or images that might be compared against each other should be kept in the same project.

    Three Important Windows The Split-Desktop workspace is divided into three main windows.

  • 31

    Three Important Windows in Split-Desktop

    The Display Window shows your images and results. The majority of your interaction happens here.

    The Images Window is a list of all images in the project. The Layout Window provides you with an optional method of grouping your

    images into meaningful samples.

    The Display Window is always visible. You can hide the Images Window or the Layout Window but not both through the View menu option.

    The Display Window: Images or Results This window shows the currently selected images with one of the following display types:

    Image display- Shows selected image files as 2-dimensional photos. This is where you can edit the delineations, modify scales, and make other changes to the individual images (see Working With Images).

    ~or~

    Results display Shows the calculated size distribution results of the selected images. See Working With Results.

  • 32

    The Display Window

    Switching Between Image Display and Results Display You can switch between the two displays through the View menu option or with one of the toolbar buttons shown here.

    Switch between Image Display and Results Display

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    Changing the display type between Image and Results Display does not change the current selection. The illustration below shows two images in the different display. You can switch back and forth between Image and Results Display any number of times.

    Two images, shown in Image Display (left) and Results Display

    Images Window The Images Window appears as a vertical list in the upper right corner of the Split-Desktop main window. Images that are selected in this window will appear in the Display Window.

    The Images Window

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    The list in the Images Window includes every image that is in the project. Each image appears once, regardless of how many times it may appear in the Layout.

    Selecting Columns The left column is always the Image column (the title appears at the top of the column) and shows a thumbnail of the image along with the images status indicator. This is the only mandatory column; the other eight columns listed here are optional.

    Name The images display name Fines Factor The user-defined fines factor for the image Results Status The images status in text form Scale Scaling information Resolution The number of rows & columns in the image Modified The date this image was last modified in this project Added The date this image was added to the project File Name The original file name of the image

    To add, remove or change the order of the columns shown in the Images Window, from the menu select View | Select Images Window Columns or right-click on the column header and select the Select columns item.

    Selecting Images Window columns

    Use the button labeled to move columns between the Displayed and Hidden collections. To change the order of the displayed columns, select a column name in the Displayed Columns list and use the Up and Down buttons to move its relative position.

    Image Status Each image in the Split-Desktop project has a status value that indicates whether the image is ready for use in generating results. The image status is shown as part of the image thumbnail in both the Images Window and in the Layout Window. You have three

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    options for how the status is displayed, as shown below. To change the status display, select View | Status display options from the menu, or right-click on any thumbnail and the same menu item will be on the popup menu.

    Changing the status display three options

    Layout Window The layout window is an optional tool for organizing your images. See the section Organizing With the Layout Window for details. You can create any number of branches in its tree-like structure. The primary reason for using the layout window is to create groups for viewing results.

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    The Layout Window

    In the layout shown above you can get instant results for all images taken on K-Bench by clicking on the K-Bench node. If you are only interested in the images on K-Bench that were in Shot 234, you would click on the Shot234 node.

    Image Status The image status is displayed in the layout window exactly as it is displayed in the Images List.

    Selecting Images There are two ways to select images: from the Images Window or from the Layout Window. Selected images appear in the Display Window, where they appear either in image form or in results form, depending on which type of display is active.

    Selecting from the Images Window Select one image by clicking on it in the Images Window. To select more than one image, use the standard Windows key combinations of Ctrl or Shift while clicking.

    Selecting from the Layout Window Click on any image or branch in the Layout Window. Clicking on a branch that has more than one image beneath it will select all of the images. If an image appears more than once beneath a branch, it is shown only once in the Display Window.

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    Printing Split-Desktop can print individual images or results. Images are printed the maximum size that will fit on a single page, and results are printed on multiple pages. The first page of the results printout is always the graph, and the columns of tabulated results are printed on the following pages.

    Display the item you want to print in either the Image Display or the Results Display, and then File | Print from the menu or press the button. This will present the standard Windows printer dialog where you can select the printer and printer-related options. The File | Page setup menu option lets you specify the margins of the printout. To preview the format before actually printing, select File | Print preview or press the button.

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    Working With Images

    Adding Images to the Project To add an image to the current Split-Desktop project, simply open the image by any of the following methods:

    Image | Open from the menu File | Open image from the menu Toolbar button (opens images or projects) Drag-n-drop image files

    Images that are added to the project appear in the Images window. From there you can select one or more images to view or edit.

    Image Status The image status provides a visual indication of whether each image is ready to be used in calculating results. Each images status is shown in the Images Window and the Layout Window, and there you can modify the way the status is displayed with the Status Display Options.

    The status indicator will be one of these three values:

    Red. Cannot be used for results (missing scale and/or delineations)

    Yellow. Can be used for results, but results may not be reliable because the delineations & scale have not been edited.

    Green. Ready for results. The image is delineated and scaled, and has been edited.

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    More Detailed Information

    Tooltips More detailed information about the images status is available from the tooltips that appear when you hover the mouse over an images icon.

    Detailed Status Information in the Tooltip

    Images Window Columns The Results Status column in the Images Window provides a concise summary of the images status, and the Scale column give details about the scales in the images. Refer to the section on the Image Window Columns for information.

    Detailed Information in the Images Window

    Viewing Images Selected images are shown in the Image Display.

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    Viewing a Single Image vs. Multiple Images Most commands for viewing and editing images require that exactly one image be selected. The multiple image view does not allow zooming & panning, and it does not allow viewing or modifying delineations.

    Single Image View most work happens here

    Multiple Image View

    Image Properties Select the menu item Image | Properties to see the properties of one or more selected images. When more than one image is selected, only those properties common to all images are shown.

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    Image Properties single image

    The only items that can be modified from the Image properties dialog are the Display Name and the Fines Factor.

    Display Name The images name as it appears in Split-Desktop. The default name of an image is its file name.

    Columns and Rows The current resolution of the image.

    Fines Factor The estimated fines factor used in generating the size distribution results.

    Original Image The name and resolution of the image when it was added to the project.

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    Added & Modified The time the image was added to the project, and the last time it was modified.

    Getting Around: Zooming and Panning

    Zooming with the Zoom tool To use the Zoom tool, select it from the toolbar or from the menu with Tools | Zoom tool. The mouse cursor will change to when the Zoom tool is active. Click the left mouse button to zoom in and the right mouse button to zoom out. The zoom operation is focused on the position of the mouse, meaning the image pixels under the mouse will still be under the mouse after you zoom in or out.

    Zoom tool showing how mouse position is maintained

    Other ways to zoom There are two other ways to zoom without using the zoom tool:

    Mouse wheel + and keys on the keypad

    These might be useful when you have another tool selected, for example when you are editing an image, and do not want to have to invoke the Zoom tool.

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    The mouse wheel zoom is focused on the mouse position just like when using the Zoom tool. When using the keyboard to zoom, the zoom is focused on the center of the display.

    Panning To use the Pan tool, select it from the toolbar or from the menu with Tools | Pan tool. The mouse cursor will change to when the Pan tool is active. To pan the image, hold down the left mouse button and move the mouse. You can also use the four directional arrow keys to pan the image. To increase or decrease the distance panned with each keystroke of the arrow keys, use the + and keys on the keypad. Press the Home key to automatically pan the upper-left corner of the image to the corner of the display.

    Nifty Shortcut for Panning! You can pan at any time without having to select the Pan Tool but holding down the right mouse button and moving the mouse.

    Toggling Delineations On and Off Delineations are visible in the Display Window when viewing a single image (not multiple images) in the Image Display. The delineation information is shown as an overlay on top of the original image.

    With the mouse cursor over the image, click the right mouse button to turn delineation visibility on and off (press down and release the mouse button). Alternatively, use the comma and period keys on the main keyboard to toggle the delineations.

    Delineations Off Delineations On

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    Changing Delineation Colors Delineation colors are used in the delineation overlay when viewing a single image that has been delineated to indicate particle outlines and areas of fines and/or mask. Select the menu option Image | Display options to modify the delineation colors.

    Image Display Options

    With some images, particle outlines may be more visible if you select a different color for the particle boundaries.

    Default delineation colors

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    Modified delineation colors

    Mouse-Over Feedback: Particle Outlines Mouse-over feedback is a tool that shows particle outlines and size information on a delineated image. This information is especially helpful when performing manual edits on the delineations.

    Mouse-over feedback outline in yellow

    To modify the mouse-over options, select the menu option Image | Display options.

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    Image Display Options

    The two options for mouse-over information are Highlight particles (draws particle outlines) Tooltip information (shows approximate particle sieve size, scaled if possible)

    Both of these effects are shown in the image above where the particle is outlined with yellow and the tooltip shows the scaled particle sieve size is approximately 4.41 inches.

    Particle Highlight Options The particle highlight can show the particle outline, the best-fit ellipse (used to calculate the particles sieve size), or both. To change the highlight options, press the Settings button shown above.

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    Particle Highlight Options

    An example of the best-fit ellipse is shown here.

    Particle highlight plus best-fit ellipse

    Using Particle Highlight While Editing Delineations The two images below illustrate how to use the particle highlight to improve delineations. The first image shows what appear to be good delineations, however the second image shows where a small bridge between two particles that might be missed by the human eye is made obvious with the highlight outline.

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    Apparently good delineations

    Or are they?!

    Delineating Images Delineations are the foundation of the size distribution calculations in Split-Desktop. Delineating is a semi-automatic process of drawing borders around the boundaries of rock particles in an image. It also includes filling areas of the image with color to indicate that the area is to be masked, or that the area is mostly fines material. A delineated image will show the original image overlain by the delineated boundaries.

    Usually, the final delineations used in an image are a combination of the automatic delineations performed by Split-Desktop and manual edits made to improve the quality of the automatic delineations. It is possible to skip either of these steps, but in most cases the most efficient and accurate method is to let Split-Desktop do most of the delineation work for you and then do a little manual tidying up.

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    Automated Delineation Existing delineations are deleted from the images. If you have already spent time performing manual edits to the delineations, executing this command will wipe out those edits.

    To have Split-Desktop perform automated delineations, select one or more images and execute the menu option Image | Delineate. The Delineation Settings dialog will give you a chance to modify the level of delineations and auto-fines, as shown here.

    Automated Delineation Settings

    Move the Level of delineation slider to adjust the amount of delineation and press OK. Do not forget to turn delineation visibility on to see the results. The effects of moving the slider are shown in the two images here. The same image was delineated with different Level of delineation settings.

    Less delineation More delineation

    The appropriate Level of delineation may change with different images taken under different environmental conditions. It is usually easiest to start with the level in the center and make adjustments as needed.

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    Auto Fines Check the Use auto-fines option to have Split-Desktop automatically identify particles that appear to be patches of fines. Usually it is preferable to manually identify fines, so this option is unchecked by default.

    Manual Edits to Delineations Delineations can be edited on one image at a time. With the Image Display active, select one image and toggle delineation visibility on.

    Manually editing delineations involves three main operations: Drawing boundaries Erasing boundaries Filling particles with fines/mask colors

    Changing the Image Status Making manual edits to an image will change the images status from yellow to green by marking the image as having been edited. You can also artificially mark the selected images as edited with the menu option Image | Mark as edited.

    Drawing and Erasing Boundaries Select the Brush or Eraser tool from the toolbar or from the menu with Tools | Brush or Tools | Eraser. The toolbar buttons gives you a chance to specify the thickness of the tool; the menu options use the same width as the last time you used the tool. Move the mouse cursor into the image, press down the left button and drag the mouse to draw or erase. Release the left button to end.

    In the example shown below, the automatic delineations have some obvious problems that require both erasing existing boundaries and drawing in new ones.

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    Original Image Automatic Delineations Some Problems

    Edited Delineations

    Nifty Editing Shortcut! There is a shortcut that allows you to quickly switch between the brush and the eraser: if you hold down the Shift key before you press the left mouse button, the eraser tool becomes brush tool and vice versa. This way you do not have to go to the toolbar or menu to switch between the brush and the eraser.

    Marking Areas of Fines Particles below a certain size cannot be accurately delineated so Split-Desktop lumps them together as fines. Set the section on estimating fines for additional information on how this affects the results.

    As part of manual editing, areas of fines should be filled in with the fines color. This tells Split-Desktop that the area is all fine material, which will be used in calculating the size distribution results.

    There are two ways to mark part of the image as fines:

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    Cut and fill an area with the Fines area tool One particle at a time with the Fines fill tool

    Fines Area Tool The Fines area tool cuts out an area of delineation pixels and fills it with the fines color. The area is selected with the same rectangle, polygon, or circle options used to make selections. Refer to that section for details on drawing the fines area selection.

    Select the fines area tool either from the toolbar or from the menu with Tools | Fines area.

    Fines area tool

    Fines Fill Tool The Fines fill tool fills in existing particles with the fines color. Select the tool from the toolbar or from the menu with Tools | Fines fill. Position the cursor over any particle and click the left mouse button to fill with the fines color.

    Fines Example In the example below, there are large rocks mixed in with the fines. In this case it was easiest to first remove the delineations from the entire left side of the image by making a Polygonal area selection and deleting the delineations. Then the boundaries of the coarse particles can be drawn in, and the fine area is filled with the Fines fill tool.

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    Image with a Lot of Fines

    Same Image, Delineated with Fines Areas in Red

    Masking Parts of an Image Masking removes parts off the image from analysis by coloring them with the mask color. Masking is always performed after delineations, because the masked area uses delineation boundaries. Consider using cropping instead of masking whenever possible because cropping is usually more efficient, however for the example below we will use masking to illustrate the process.

    There are two ways to mask part of the image: Cut and fill an area with the Mask area tool

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    One particle at a time with the Mask fill tool

    Mask Area Tool The Mask area tool cuts out an area of delineation pixels and fills it with the mask color. The area is selected with the same rectangle, polygon, or circle options used to make selections. Refer to that section for details on drawing the fines area selection.

    Select the fines area tool either from the toolbar or from the menu with Tools | Mask area.

    Mask area tool

    Mask Fill Tool The Mask fill tool fills in existing particles with the mask color. Select the tool from the toolbar or from the menu with Tools | Mask fill. Position the cursor over any particle and click the left mouse button to fill with the mask color.

    Mask Example In the image below, you would want to mask out the shovel bucket and probably some of the unbroken rock face at the top. In this case the polygonal shape works the best.

    Image Needs Masking

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    The image below shows the mouse clicks used to create the polygonal masked area. Notice that some of the clicks are outside the image. Thats a useful trick you can use when you want to snap a selection line to the edges of your image.

    Polygon Area Selection Showing mouse click locations

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    Area filled with mask

    Scaling Images Split-Desktop allows one to three scales in each image. (It also allows zero, but in that case the image cannot be used to calculate results.) Scales appear in the image as shown below, displaying the length of the scale and the value of the scale in pixels per unit.

    Typical Scale

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    Scales can be added manually, using the Scale tool, or automatically using scaling objects in the image. Regardless of which method is used to add the scale(s), they can be modified or deleted at any time by selecting them with the Scale selection tool.

    Manual Scaling To add a scale manually, select the scale tool from the toolbar or from the menu with Tools | Scale tool. Position the mouse over the first end point of the scale, press down the left mouse button, and drag the mouse to the other end of the scale. When you release the mouse button the scale dialog shown here will ask you for the length of the scale. Press OK and Split-Desktop will insert the scale and calculate its value in pixels per unit.

    Enter the Scales Length

    Selecting and Editing Scales To modify an existing scale, select the Scale selection tool from the toolbar or from the menu with Tools | Scale selection and draw a rectangle over the scale(s). To select all scales in an image, use the menu option Image | Select all scales. The selection rectangle does not have to enclose the entire scale, just one of the endpoints. To draw the selection rectangle, press down the left mouse button to define one corner of the rectangle, and hold down the left button while you move the mouse to the opposite corner. Release the left button to complete the selection.

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    Selecting a scale

    Scale, selected

    After the scale is selected, you can use the mouse to move either endpoint of the scale with the end grippers, or move the entire scale by dragging the center gripper. To change the known length of the scale, right-click on any of the grippers and select Properties from the popup menu. The value of the scale is automatically recalculated after either of these changes.

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    Right-Click on a Gripper

    To delete all selected scales, select Delete from the popup menu shown above or select Edit | Delete from the menu. To delete all scales in an image, select Image | Delete all scales.

    Automatic Scaling Automatic scaling can be performed on images as they are added to the project. See the section on automation for more information.

    Automatic scaling works by locating scaling objects (generally the red scaling balls provided by Split Engineering) in the image. Currently, automatic scaling works only with round or spherical objects. The search for scaling objects is based primarily on their color, so automatic scaling works best when the scaling objects in all images are the same color.

    Executing automatic scaling To use automatic scaling, select Image | Find scales from the menu. You will have the chance to change any of the options shown in dialog box below, or you can just click OK to proceed with the same settings used last time.

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    Auto scale settings

    Scaling object diameter diameter of the scaling balls Scaling object color color of the scaling balls, see below Apply mask to scale object check this to mask out the scaling objects after they

    are located

    Setting the scaling object color The most reliable method of setting the color of the scaling objects is to copy the color from an image. As shown in the image below, select an area of a scaling ball that is representative. For example, avoid the edges of the ball where lighting may create bright spots and avoid discoloration such as the writing shown here.

    Representative area of scale ball color

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    Copy the color of the selected area (Edit | Copy) and then run the auto-scale tool (Image | Find scales). When the clipboard holds image information, the Paste from Clipboard button is enabled. Simply click that button to set the scale object color.

    Clipboard option enabled

    An alternative method of setting the color is to use the standard windows color selection dialog, which you can invoke with the button.

    Rangefinder Scaling To use rangefinder scaling, select Image | Rangefinder scaling from the menu. This method is the most technically difficult. You must first calibrate your camera by using similar triangles between the sensing array, the distance to the lens, the distance from the lens to the object and the size of the image collected. This calibration will change if the focal length is changed, so to use this method you must calibrate for whatever zoom settings you acquire images at. It is probably only practical to use this method for the most zoomed in levels and the most zoomed out levels on a zoom camera. You must also use a rangefinder to record the distance to a particle that appears at the bottom of the image and the distance to a particle that appears at the top of the image. If you wish to use this method, please contact Split Engineering for further instructions and help in calibrating your camera.

    Selecting Image Areas

    Select an area of an image by highlighting part of the image. The highlighted selection can then be used in the editing Cut, Copy or Delete operations. Split-Desktop supports three ways to select an image area:

    Rectangle selection Polygon Selection Circular selection

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    Use the toolbar button or select the menu option Edit | Select area and select one of the shapes from the dropdown menu.

    Three selection shapes

    Rectangular Area Selection Position the mouse over one corner of the desired rectangle and press down the left mouse button. Holding the button down, move the mouse to the opposite corner and then release the button. The selected area is highlighted with a marching ants border and a shaded interior.

    Rectangular area selected

    Polygon Area Selection The polygonal selection tool can draw straight lines, curves, or both. To draw straight lines, click the left mouse button (one click equals button down + button up) on the endpoints of the segments. To draw a curve, press the left mouse button down and hold it

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    down while you trace the curve with the mouse. Release the mouse button to stop drawing the curve. You can mix any combination of lines and curves. To erase one or more previously drawn points, press the Backspace key.

    To close the polygon, either press the Enter key or draw a point on the curve so that the curve crosses itself. When the curve crosses itself, it will be automatically closed. Press the Esc key to abort the current outline.

    Polygonal area selected

    In the example shown above, part of the area was drawn with straight lines and part was drawn with a curve.

    To draw a polygon selection that touches the borders of the image, move the mouse beyond the boundary of the image and click a point. The selection point will be snapped to the closest edge of the image. In the graphic below, the points where you might click the mouse are indicated with red dots and lines pointing to the snapped location.

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    Polygonal area that touches the image boundaries

    Circular Area Selection Position the mouse over any point along the circumference of the circle. Press down the left mouse button and move the mouse to the opposite point on the circumference of the circle.

    Circular selection

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    Editing Images

    Cropping The Crop tool reduces the area of the image. You might want to do this if a significant part of the image does not contain broken rock to be used in the size analysis.

    Select the crop tool from the toolbar or from the menu with Edit | Crop tool. Draw a rectangle (see the selection tool description for drawing a rectangle) that includes all scales in the image. If the image has scales in it, the cropped area must include all of the scales or the cropping will fail with an error message.

    Original image with crop area selected

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    Image after cropping

    Cut, Copy and Delete These tools work on the selected area of an image (see Making Selections). The Cut and Delete tools remove delineations, including any fines or masked areas, therefore these tools are enabled only when viewing a delineated image. The Copy tool works on either the delineated image or the original image.

    Original image with polygonal area selected

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    Cut the selected area

    Image after cutting selected area

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    Cut area is put onto the clipboard

    Reducing Image Resolution Generally, more image resolution (meaning, the number of rows and columns of pixels) is better than less when performing image processing as performed in Split-Desktop, however larger images take longer to process and they take up significantly more space in the computers memory and on the hard drive.

    The optimum image resolution depends on a number of variables, including the area captured in the image, the size range of the particles, and the amount of texture on the rocks in the image. There are no solid numbers to use as a maximum resolution, but in most cases an image size of 1Kx1K (1024 columns & 1024 rows) is at least sufficient.

    To reduce the resolution of an image, select the image and then from the menu select Image | Reduce resolution. The new resolution will be reduced to 10-100% of the current resolution. Use the slider or manually type in a value to specify the new fraction.

    Reducing Image Resolution

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    As a reference, the original image resolution is available from the Image Properties.

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    Automated Image Processing Some of the operations in the Split-Desktop pipeline can be configured to execute automatically on each image that is opened. To turn automated processing on or off, select Tools | Options from the menu and change the settings within the Perform on added images box.

    Automated Processing Options

    Delineate Check this box to automatically delineate images as they are opened. Press the Settings button to modify the delineation parameters, which are the same as the parameters used when this command is performed from the menu.

    Fine Scales Check this box to automatically locate scaling objects within images as they are opened. Press the Settings button to modify the scale size and the parameters used to locate scales. These settings are the same as those used when this command is performed from the menu.

    Limit Image Resolution Check this box to limit the maximum image size. Images that are larger than the maximum size will be scaled down when they are opened. The final resolution will be close to (but rarely exactly) the value specified here.

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    Maximum Image Resolution

    Some example resolutions are shown in the table below.

    Columns and Rows Approx resolution (pixel count) 700 x 700 0.5 Megabytes 1024 x 1024 1 Megabyte 2048 x 2048 4 Megabytes 4096 x 4096 16 Megabytes

    See the section Reducing Image Resolution for reducing the resolution after the image has been added to the project.

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    Estimating Fines

    Split-Desktop can see and measure particles, but in every image there is a point below the resolution of the image where particles can no longer be seen and delineated. At this point, Split-Desktop will estimate the remaining finer material. The fines cutoff chiefly depends on the resolution of the image (in pixels/unit). The shape of the curve below the cutoff is determined by the distribution of the particles right above the cutoff. Split-Desktop utilizes the best fit of either a Schumann or Rosin-Rammler equation to represent the distribution of fines below the automatically computed fines cutoff point. A regression is computed for the data before the fines correction for each method and the one with the highest correlation is chosen.

    Fines Factor Since the black pixels in the image represent both fines and outlines of particles, a percentage of these pixels are included in the fines calculation. This percentage is called the fines factor, and can vary for each image.

    Change the fines factor through the Image Properties dialog. You can either use the slider bar to select a canned percentage, or you can manually type in any percentage value from 0 and above.

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    Fines Factor on Image Properties

    The Fines Factor can be modified on more than one image at a time. Select any number of images to change them all at once.

    If you do not want any black pixels to count as fines, i.e. rip rap material where the fines have been screened out, then move the slider to None which will enter 0%. Similarly, if the material is very fine, you will want all of the black pixels to count as fines, thus move the slider to High, which will select 100%. Of course, Split-Desktop will allow any percentage to be entered. The default setting for muckpiles is 50% and the values above 100% are typically used when calibrating conveyor belt material.

    Example guidelines for setting this percentage are shown in the images below. Obviously not all images from a muck pile will look the same so you should set this number based upon your overall impression. If you are group processing images, note that the same fines percentage is applied to all images.

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    Example of many fines. Use High (or 80% - 100%)

    Medium fines amount. Use Medium (or approx. 50%)

    Few fines present. Use Low (or 10% - 20%). Or use None (0%) if you know fine material has been screened out.

    NOTE: The fines estimation does indeed change the size calculation that Split-Desktop produces. If the image has many black pixels, the change in size results can be dramatic. Before using Split-Desktop for your testing purposes or as a part of the daily regimen, it is not unreasonable to calibrate a fines estimation factor for your site. You may want to calibrate the fines factor by imaging material and comparing the sieve results to the Split-Desktop results. By altering the fines factor you should be able to get the lower portion of the cumulative size curve to fit the sieve curve. Be sure to employ proper sampling techniques before calibrating, otherwise the calibrated fines factor may not be accurate. Contact Split Engineering if you want advice on developing a procedure. This will be most beneficial when encountering finer material and especially when acquiring and processing images of finer material on conveyor belts. For future systematic use of the

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    software you will have a consistent frame of reference if you start with calibrated samples.

    Because the fines estimation percent is a powerful user controlled parameter, remain systematic in its use. Split-Desktop helps to be systematic by providing five options: None, Low, Medium High and Very High; each with a corresponding preset percentage. Wanton use of this parameter will hinder your ability to compare data output sets with confidence.

    The image below shows the effect of changing the Fines Factor. The five curves are from the same image at different Fines Factor values.

    Effect of changing the Fines Factor

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    Working with Results

    To view the size distribution results for the selected image(s), select the Results Display in the Display Window. Calculated results are available for images that are delineated and scaled, and can be shown for a single image or a collection of images.

    Results are presented in graphical form and as tabulated text, as shown here.

    Typical results (framed in red) showing graph and text

    Results Options Result options are available on the Results Options dialog. Invoke the dialog by any of the following methods:

    Menu option Results | Results options Right-click on the graph or text and select Results options

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    One way to change results options

    General Options Items on the General page of Results Options mostly control placement of the graph and text boxes.

    Result Options General

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    Show Graph and Text Options You can hide the graph or the text results, but not both. The visible results are controlled by the choices:

    Show just the graph hide the text results Show just the text hide the graph results Show both text and graph show both graph and text results

    Graph only Text only Graph and text

    Toolbar Shortcuts Show just the graph Show just the text

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    Graph and Text Position The Position Text options control where the text box is placed relative to the graph. Select one of the four options.

    Left of graph Right of graph

    Above graph Below graph

    Toolbar Shortcuts Left of graph Right of graph Above graph Below graph

    Display Results In [units] Select the size units that will be used in the results, including the graph and the text output. This does not have to be the same units used in the sieve or in any reference curves.

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    Graph Content

    Result Options Graph Content

    Curves Displayed These options control how the curves that are displayed on the graph.

    Combined Applies when more than one image is selected. When checked, the combined size distribution of all images is displayed. Use the line style combo box to select the line style for combined results.

    Images Applies when more than one image is selected. When checked, a curve for every selected image is displayed. Use the line style combo box to select the line style for individual image results.

    Intermediate Applies when a branch is selected from the Layout Window. When checked, intermediate results from branches beneath the selected branch are displayed. Use the line style combo box to select the line style for intermediate results.

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    Reference Curves Reference curves are displayed when checked. Cumulative Curve When checked, curves are shown as cumulative

    histograms Sieve series histogram- When checked, curves are shown as non-cumulative

    histograms

    Graph Showing Intermediate and Combined Results

    Axis Scales Select linear or log scale for the size (X) axis and the percent (Y) axis.

    Titles and Fonts The Axis label font is used for labels on the X and Y axis. The title appears at the top in the title font.

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    Title and axis fonts

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    Graph Colors

    Result Options Graph Colors

    The curves that are shown in the graph are assigned colors from the list on this page. The colors are assigned in the same order that the results appear in the legend. If there are more curves displayed than there are colors in the list, the list repeats.

    Changing the List of Colors Press the Add button to add a new color using the standard Windows color selection dialog.

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    Adding a color

    Select a color in the list by clicking on it. Selected colors can be deleted, changed (use the Modify button), or moved up & down the list. Press Default to restore the color list to the factory default.

    Saved Color Schemes The colors in the list can be saved to a *.color file. Press the Save As button to save the list, and the Load button to load a previously saved color list.

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    Legend and Logos

    Result Options Graph Legend and Logos

    Legend Position The Legend Position graphic on the dialog shows the eight positions (radio buttons on white boxes) relative to the graph, portrayed at the dark gray box. Four of the available positions are shown here.

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    Some Different Legend Positions

    Logo You can replace the Split Engineering logo in the lower right corner of the graph with your own logo. To select a different logo, press the button and browse to a jpeg or bmp file. Note: the entire image is stored in the Split-Desktop project, so large logo image files may greatly increase the size of your Split-Desktop project file.

    You can change the size of the logos at the bottom of the page by selecting the Small, Medium or Large options.

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    Changing the Logo Size and Image

    Text Content Text content controls the amount of information shown in the text output part of the result.

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    Result Options Graph Legend and Logos

    Items Displayed These options are analogous to the Curves Displayed options on the Graph Content page.

    Final cumulative Applies when more than one image is selected. When checked, the combined size distribution of all images is displayed.

    Images Applies when more than one image is selected. When checked, a curve for every selected image is displayed. Use the line style combo box to select the line style for individual image results.

    Intermediate cumulative Applies when a branch is selected from the Layout Window. When checked, intermediate results from branches beneath the selected branch are displayed.

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    Other Text Content Options

    Font Select the font used in the text output window. We suggest a non-proportional font such as Courier so the columns of text line up correctly.

    Sieve Series Check Show sieve series to include the sieve series results in the text output. The option Limit sieves above 100% is used to minimize the number of sieve sizes that are 100% passing. When this box is checked, redundant sieve sizes of 100% are not displayed. The illustration below shows the effect of checking this option.

    Limiting sieve sizes above 100%

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    FXO Series Check Show FXO series to include the FXO series results in the text output.

    Fines Factor & Cutoff Check Show fines factor & cutoff to include the fines factor and the fines cutoff in the calculated minimum size of delineated particles.

    Fines Fit Statistics Check Show fines fit statistics to include the calculated fines fit constants in the text output.

    Sieve Series The sieve series is a virtual set of sieve sizes that you create. The purpose is to mimic the size distribution results provided by a lab that does actual sieve analysis.

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    Results Options Sieve Series

    Sieve Series in the Results When the Show sieve series option is selected, the sieve series is shown in the results text output. For each Size value in the list created here, a percent-passing value is calculated and displayed, as shown in the results example below.

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    Sieve Series in Results

    Adding a New Sieve Size Sieve sizes are entered by typing them in place in the list. You can start this process by clicking the Add button or by double-clicking the mouse on the (new sieve size) item at bottom of the list.

    Modifying or Deleting a Sieve Size Modify an existing sieve size by double-clicking on it, or by selecting it in the list and pressing the Modify button. Changes are made to the value in place. Delete an entry by selecting it in the list and pressing the Delete button.

    Saved Sieve Series The sieve series can be saved to a *.siv file which is compatible with the Split-Online software. Press the Save As button to save the current series, and the Load button to load a previously saved sieve series. Press Default to reset the sieve series to the default list. The default list is different for different units, so ensure the correct units are selected before pressing Default.

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    Units These are the units of the sieve series, and not necessarily the same as the output units.

    FXO Series The FXO series is a virtual set of percent-passing values that you create. The purpose is to mimic the size distribution results provided by a lab that does actual sieve analysis.

    Results Options FXO Series

    FXO Series in the Results When the Show fxo series option is selected, the sieve series is shown in the results text output. For each % Passing value in the list created here, a size value is calculated and displayed, as shown in the results example below.

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    FXO Series in Results

    Formatting FXO Values The F prefix is added to the default FXO values out of convention. The prefix has no effect on the results and it is optional. It can be removed by modifying existing values, and it can be omitted from new values.

    Adding a New FXO Value FXO values are entered by typing them in place in the list. You can start this process by clicking the Add button or by double-clicking the mouse on the (new sieve size) item at the bottom of the list.

    Modifying or Deleting an FXO Value Modify an existing FXO value by double-clicking on it or by selecting it in the list and pressing the Modify button. Changes are made to the value in place. Delete an entry by selecting it in the list and pressing the Delete button.

    Saved FXO Series The FXO series can be saved to a *.fxo file which is compatible with the Split-Online software. Press the Save As button to save the current series, and the Load button to load a previously saved sieve series. Press Default to reset the sieve series to the default list.

    Reference Curves Reference curves are optional size distribution curves that you can display on the graph. Each curve consists of a user-defined sieve series that includes the percent-passing values for each sieve size.

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    Defining Reference Curves

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    Reference Curves on the Graph When the Reference Curves option is checked, these values are plotted as a curve on the graph along with the calculated size distributions.

    Reference Curve Shown On the Graph (blue curve)

    Adding a New Curve Press the New button to create a new curve. Ensure that the curve is selected in the Reference Curves list on the left, and then define the sieve series for the curve in the Curve Definition box on the right.

    Defining the Sieve Series for a Curve The curves sieve series is defined in a similar manner to defining the standard sieve series for output. The difference is that after entering the Size value, you also need to edit the % Passing value. To do that, double-click on the current % Passing value and edit it in place.

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    Units These are the units of the sieve series, and not necessarily the same as the output units.

    Curve Color and Style Set the reference curves color by pressing the button beside the color indicator.


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