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IMAGE TECHNOLOGY
Image Technology – Cont’d
• The storage of documents or other data that includes text, graphics, tables, and pictures is called image technology.
Technologies considered to be image technology
• Optical disk• Micrographics• Facsimile• Scanning• Digital camera
Optical Disks• An electronic image media.• Advantages:High storage capacity and durability.High speed retrieval (random access).High resolution output to monitors.
Optical Disks – cont’d• Disadvantages:ExpensiveLegal admissibility of documents on optical
disks has not been determined.
Types of Optical Disk Storage• Compact Disk – Read-Only Memory (CD-
ROM).• Compact Disk (WORM) - Write-Once/Read
Many times.• Compact Disk rewritable (CD-RW) - Erasable
Optical Disk. • Digital Videodisk or digital versatile disk
(DVD) – A read-only optical storage medium that stores approx. 130 minutes of full-motion video.
Types of Optical Disk Storage – cont’d
• Recordable Disk (DVD-R) – A recordable DVD.• Digital videodisk – rewritable (DVD-RW) – A
rewritable DVD.• Computer output to laser disk (COLD) – A
technique for the transfer of computer-generated output to optical disk so that it can be viewed or printed without using the original programme.
Types of Optical Disk Storage – cont’d
• Optical card – A small electronic device about the size of a credit card.
Integrated Image Systems
• Computer-Assisted Retrieval (CAR)• Computer-Output Microform (COM)• Computer-Input Microform (CIM)• Computer Output to Laser Disk (COLD)• Hybrid Imaging Systems
Image Records Retention
• Microfilm records can be stored for hundreds of years under carefully controlled environment.
• Optical disks have life spans ranging from 10 to 100 years (depending on brand, storage, and use conditions).
Micrographics
• Micrographics technology minimizes information. It refers to the procedures for creating, using and storing micro-records.
Micrographics – cont’d
• Microforms are any forms, either films or paper, containing micro-reproductions of documents for transmission, storage, reading, and printing.
• Microform images are commonly reduced to about one twenty-fifth (1/25) of the original document size.
Types of Microforms
• Roll film
Microfiche
Ultrafiche
Jacket
Aperture Card
Non-standard Microform
Types of Camera
Planetary Camera
Rotary Camera
Microfilm Reader-Printer
Microfiche Reader
Microfiche Reader-Printer
Microform Procedures & Equipment
• Document preparation• Camera film• Image size• Image Orientation• Types of cameras• Auxiliary equipment