Radiometric and Geometric Calibration Workshop Camera calibration program in the United States:...
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![Page 1: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/1.jpg)
Radiometric and Geometric Calibration Workshop
Camera calibration program in the United States: past, present, and
future
U.S. Department of the InteriorU.S. Geological Survey
![Page 2: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/2.jpg)
Radiometric and Geometric Calibration Workshop
Background:
• USGS camera calibration responsibility
• Responsibility transferred to the USGS in 1973
• Laboratory calibration using multi-collimators
• Calibration instrument designed for metric 230- x 230-mm film-base aerial cameras
![Page 3: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/3.jpg)
Radiometric and Geometric Calibration Workshop
Background:• Evolution of digital technology:
• Photogrammetric scanners over fifteen years ago• Small-format cameras being used for years by a
small sector of the mapping community• Large-format aerial cameras have been in
development for years and have emerged• Non-optical sensors playing a bigger role• 1-meter and sub-meter products from satellites
![Page 4: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/4.jpg)
Radiometric and Geometric Calibration Workshop
Background:
• USGS failure to be prepared for digital cameras resulted in:
• Lack of experience with digital cameras
• Lack of instrumentation to continue calibrations
• Lack of upgrade strategy from analog to digital
• Lack of standards and policies
![Page 5: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/5.jpg)
Radiometric and Geometric Calibration Workshop
Complicating issues:
• Inability to perform laboratory calibration on small format digital cameras
• Different designs of digital cameras• Different hardware/software solutions• Integration of cameras with other systems such
as IMU and airborne-GPS equipment
![Page 6: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/6.jpg)
Radiometric and Geometric Calibration Workshop
The bottom line for calibration:
• Ensuring quality of the end-product
But:
• Who does it?• How is it done?
![Page 7: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/7.jpg)
Radiometric and Geometric Calibration Workshop
Current approval authorities:• For now:
• USGS (cameras)• USGS and other agency contracting offices (product
characterizations)
• Future may include:• Government-approved independent
evaluators/consultants• UL-type organization
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Radiometric and Geometric Calibration Workshop
How?
• Component calibration (camera calibration)• System calibration (LIDAR systems)• Process evaluation (error budget analysis)• Product characterization (satellite products)• ISO certification (quality management plan)
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Radiometric and Geometric Calibration Workshop
USGS camera calibration efforts:
• Stabilization of analog calibration instrument• Development and installation of interim
calibration capability for small-format cameras• Development of in-situ calibration site and
software
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Radiometric and Geometric Calibration Workshop
Analog calibration:
![Page 11: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/11.jpg)
Radiometric and Geometric Calibration Workshop
Analog calibration:
• Maintain current policy• Continue to provide camera calibrations on a
cost recovery basis
![Page 12: Radiometric and Geometric Calibration Workshop Camera calibration program in the United States: past, present, and future U.S. Department of the Interior.](https://reader036.fdocuments.in/reader036/viewer/2022062517/56649eb65503460f94bc0015/html5/thumbnails/12.jpg)
Radiometric and Geometric Calibration Workshop
Interim digital capability at EDC:
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Radiometric and Geometric Calibration Workshop
Interim digital capability:• Testing stability of calibrations with USGS
camera• Calibration of other cameras on a research
basis• Comparison of results with other laboratory
calibration methods• Comparison of results with in-situ calibration
approach
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Radiometric and Geometric Calibration Workshop
In-situ calibration:
• Initial operating capability to include site preparation, software development, and testing with USGS camera
• Operational testing with other cameras for comparisons in stability
• Extension of software to allow other in-situ sites
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Radiometric and Geometric Calibration Workshop
SSC Remote Sensing Radial Target
and Edge Response Targets
Product Characterizations over NASA Stennis Test Range
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Radiometric and Geometric Calibration Workshop
Product Characterizations:
• Performed under USGS/NASA agreement• First round funded by USGS• Data acquisition over Stennis test site• Data provider generates end-product to be
evaluated (e.g., 1-foot resolution DOQ)• NASA performs evaluation• USGS provides acceptance letter
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Radiometric and Geometric Calibration Workshop
Future work:
• Perform radiometry testing• Comparison of calibration methods• Evaluation of product characterizations• Development of in-situ calibration standards• Development of related standards
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Radiometric and Geometric Calibration Workshop
Contact information:
• George Lee, USGS, 650-329-4255, [email protected]
• Greg Stensaas, USGS, 605-594-2569, [email protected]
• Vicki Zanoni, NASA, 228-688-2305, [email protected]