IGIC Orthophotography Workgroup Update

IGIC Orthophotography Workgroup

Update

Jim StoutIMAGIS Program

[email protected]

317-327-2321

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships


• What is an OrthophotoWhat is an Orthophoto• 2005 Statewide Ortho Project 2005 Statewide Ortho Project

ReviewReview• Ortho PROGRAM VisionOrtho PROGRAM Vision

CostsCosts FundingFunding Our Current ThinkingOur Current Thinking

• Request for ProposalRequest for Proposal• Comments & SuggestionsComments & Suggestions

Agenda



This group was responsible for the 2005 This group was responsible for the 2005 Statewide Orthophotography ProjectStatewide Orthophotography Project..

Recognizing the critical need for up-to-date Recognizing the critical need for up-to-date photos, the Workgroup is developing a photos, the Workgroup is developing a PROGRAMPROGRAM to update Indiana's orthos on a to update Indiana's orthos on a regular rotating basis.regular rotating basis.

The work includes developing: The work includes developing: planning planning documentsdocuments with technical specifications, a with technical specifications, a Request for ProposalRequest for Proposal, and documents to , and documents to educate the publiceducate the public and elected officials on and elected officials on the benefits of the program.the benefits of the program.


Example of an orthophoto tile:

4,000 feetby

4,000 feet

1-foot pixel resolution.

Orthos



2005 Orthophoto Project ReviewOrthophotography has the geometric Orthophotography has the geometric characteristics of a map and the characteristics of a map and the image qualities of a photograph. image qualities of a photograph. These qualities allow for:These qualities allow for:

• distance measurementsdistance measurements

• area calculationsarea calculations

• determination of feature shapedetermination of feature shape

• direction calculationsdirection calculations

• determination of coordinates at a determination of coordinates at a locationlocation


What is an Orthophotograph?

A digital (electronic) A digital (electronic) aerial photograph that aerial photograph that has been corrected to has been corrected to remove distortion from remove distortion from the camera & airplane the camera & airplane movement and movement and adjusted to fit the adjusted to fit the ground surface.ground surface.



Cameras Distort ImagesAll imagery All imagery hashasspatial error spatial error duedueto the to the distortingdistortingnature ofnature ofphotographyphotography..

&&

Don’t forgetDon’t forgetTerrain Terrain DistortionDistortion





2005 Orthophotography Product SetsProduct Set #1: Quarter-Quad Color Orthophotography (1-meter re-sampled)

Product Set #2: County Mosaics Color

Orthophotography (1-meter re-sampled)

Product Set #3: High-Resolution

Natural Color Orthophotography

Product Set #4: Color-Infrared

Orthophotography (1-meter re-sampled)


Coordinate Systems• Indiana Indiana EastEast & &

Indiana Indiana WestWest State Plane State Plane Coordinate Coordinate System (feet)System (feet)

• UTMUTM Coordinate Coordinate System (meters)System (meters)

• NAD83, NAVD88NAD83, NAVD88



Elevation Products

Digital Surface ModelDigital Surface Model(DSM)(DSM)

Digital ElevationDigital Elevation ModelModel(DEM)(DEM)




Products (cont.)• Base product:Base product:

1-foot pixel tiles 1-foot pixel tiles• Buy-up:Buy-up:

6-inch pixel tiles 6-inch pixel tiles 13 Counties 13 Counties

• and… Control & QC and… Control & QC & validation & PM & & validation & PM & Portal & EOC & Portal & EOC & Libraries, etc.Libraries, etc.


2005 Funding

• One-time DHS grant• & other Federal grants• & County buy-ups• & State Agency

Funding

• $7.5 million



• 1.2 : 1 cost benefit ratio, without operations

• $1.7 Billion worth of project and operationssupport


2005 Ortho Project Benefits


ONGOING Orthophotography PROGRAM

• Regular Refresh Rates (on-going value) Currency of Data

2005 is a long time ago Planning (for communities & vendor) Scheduling (budgets & projects)

• Vendor Relations May be value in multi-year contracting Vendor incentives for quality



COSTS of an Ortho PROGRAM

Indiana has 40,000 sq.mi. (103,600 sq.km.)

• Satellite (.5m=20in) ~ $1.3 million• One-foot orthos ~ $5.7 million• Six-inch orthos ~ $8.5

million



FUNDING for an Ortho PROGRAM

Indiana has tentative funds ~ $1 million

from:

IN-DHS, IDEM, INDOT, USGS, grantsand

Counties?



So what PROGRAM can we afford?


• Six-inch for 1/8 of the state per year, or

• One-foot for 1/6 of the state per year, or

• Satellite of 8/10 of the state per year, or

A mixture?


How do we incent Counties?


• Make the base product low-reswith buy-up options How does this work w/ satellite?

• Provide the funds of the base product to counties who fly their own photos Most counties don’t fly much Many counties don’t have funding Cooperate with the State?


So, here is our thinking:


• Capture 1/3 of state/year• Fewer product sets

Just photos (no mosaics, one projection)

No infrared, No DEM

• Base product is low-res Satellite or 2-foot photos Buy-ups: 1-ft & 6-in,

or help counties fly


Request for Proposal


• Quotes for large area (10,000+ sq.mi.), for: 2-foot photos 1-foot photos Other options (DEM, CIR, mosaics, web posting)

• Quotes for multi-county (4,000+ sq.mi.), for: 6-inch photos

• Technical Ability / Accuracy• Capacity (coverage brings more players)• Guarantees ( flights / delivery / rejects )


Proposal Review & Contracting


• RFP release – March-April 2010• Responses due – May• Vendor selection – July• Contract negotiations – August

State Contract (MBE/WBE, Indiana vendors, etc.)

• Imagery Capture – Feb thru mid-April, 2011

• Imagery Delivery – June-July, 2011• Renegotiate for 2012 / 2013 / etc.



Comments & Suggestions & Questions

Jim StoutIMAGIS Program

[email protected]

317-327-2321

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IGIC Orthophotography Workgroup Update

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