# Presentation: 106754

##  Overview of USGS Calibration Activities

- U.S. Department of the Interior
- U.S. Geological Survey

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## ASPRS Camera Calibration Study

- Panel study completed in 1999
- Study findings and recommendations:
- Standards development inherently governmental
- USGS should continue camera calibration
- USGS should develop methods for digital sensors

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Analog camera calibration upgrades

- Analog calibrations performed on custom-built colliminator instrument since 1973
- Over 100 analog calibrations per year
- Modified to accommodate super-wide angle lenses
- Lighting and electronics upgrade 2003
- Evaluating alternatives for Kodak glass plates
- Will keep present analog calibration process operational for the foreseeable future

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Interim Digital Capabilities

- Contract awarded to Pictometry to develop and build a laboratory calibration capability for small format digital cameras
- System delivered and operational at EROS Nat
- Calibration based on “cage”, Australis software, and the SMAC model
- Calibrations being performed on research basis

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## OSU In-situ Calibration Study

- Grant awarded to OSU in 2003 to develop software to perform in-situ calibration
- In-situ range established in cooperation with Ohio DOT
- Software delivered in 2004 and being tested
- Currently testing in-situ calibration methods
- Need to establish standards for in-situ sites and policy for in-situ calibrations

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## JACIE Activities

- Joint efforts by NASA, NGA, and USGS to perform characterization of commercial satellite products
- Space Imaging, Digital Globe, and Orbimage
- Annual JACIE Workshops to report system performance and applications by government, academia, vendors, and users

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Extension of Stennis Test Site for Product Characterizations

- Stennis test range enhanced for airborne platforms and digital cameras
- Cooperative agreement with NASA to perform characterization of digital orthophoto products
- Geopositional accuracy and spatial resolution determination
- Acceptance letter and final report provided to vendor and posted on USGS Web site

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## IADIWG Formation

- Inter-agency Digital Image Working Group established by BOR, BLM, COE, FSA, FWS, NIST, NGA, NOAA, NRCS, USFS, and USGS
- Kickoff meeting held and charter being drafted
- “Broiler-plate” specifications, guidelines, and standards for digital image acquisition being drafted
- Host workshop to review initial draft
- Final draft by October 2005 and presented at ASPRS Pecora 16

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Next steps

- Work with camera manufacturers to review and approval factory calibration methods
- Work with data providers on camera acceptance process and quality control guidelines
- Establish new policies on camera calibration for the United States
- Work with International groups
- Extend characterization methods to LIDAR and other sensors

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Long-range Plans

- Evolve camera calibration, product characterization and quality checking into a quality assurance program for *The National Map *and USGS partners

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Proposal for PAD

- Test in-situ calibration methods with DOTs
- ODOT working with OSU
- Florida has flown over Stennis test range
- Seeking other interested participants with their own test and a need for camera calibration
- Report findings at next PAD meeting
- Long-range goal:  to allow in-situ calibration as an alternative

- ASPRS 2005 Annual Conference, Baltimore, Maryland

## Web site and contacts:

- See _[http://calval.cr.usgs.gov](http://calval.cr.usgs.gov/)_
- Greg Stensaas, 605-594-2569, _[stensaas@usgs.gov](mailto:stensaas@usgs.gov)_
- George Lee, 650-329-4255, _[gylee@usgs.gov](mailto:gylee@usgs.gov)_

- ASPRS 2005 Annual Conference, Baltimore, Maryland