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Jon Christopherson SGT, Inc. at USGS EROS Sioux Falls, SD jonchris@usgs.gov Work performed under contract: 08HQCN0

The USGS QA Plan for Digital Aerial Imagery. Jon Christopherson SGT, Inc. at USGS EROS Sioux Falls, SD jonchris@usgs.gov Work performed under contract: 08HQCN0005 . Outline. Background/History The USGS QA Plan – A Four Part Plan Progress to Date & the Future

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Jon Christopherson SGT, Inc. at USGS EROS Sioux Falls, SD jonchris@usgs.gov Work performed under contract: 08HQCN0

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  1. The USGS QA Plan for Digital Aerial Imagery Jon Christopherson SGT, Inc. at USGS EROS Sioux Falls, SD jonchris@usgs.gov Work performed under contract: 08HQCN0005

  2. Outline • Background/History • The USGS QA Plan – A Four Part Plan • Progress to Date & the Future • Additional Efforts & Thoughts

  3. Background & History • 2000 - ASPRS study asks USGS to work with digital • 2005 – Formed Inter-Agency Digital Imagery Working Group (IADIWG) • 2005 – First presentations of the four-part QA Plan • 2005 – Held workshop w/ industry to get feedback • 2007 – Began Sensor Type Certifications • 2008 – Completed first four sensor certifications

  4. Four Parts to the Plan • Four Major Parts of the Plan: • Contracting Guidelines • Properly specifying the data you want • Sensor Type Certification • Ensure that a metric camera/sensor will be used • Data Provider Certification • Ensure that the vendor can do this kind of work • Data Quality Assessment • Ensure that you got what you asked for initially

  5. Progress: Sensor Type Certification • Sensor Type Certification initiated first • Certified seven camera/sensors to date: • Applanix: DSS-322, DSS-422, DSS-439 • Intergraph: DMC • Leica: ADS-40 w/ SH40, SH50, & SH52 heads • Microsoft Vexcel: UltraCam-D and UltraCam-X • Three additional vendors have systems in process • More in discussion • Working with EuroSDR to harmonize efforts

  6. Progress: Data Provider Certification • Process finally outlined • Much discussion & deliberation • Reduced from original scope • Final Plan centers around Product Validation • USGS to assess accuracy orthoimagery products • Approved ranges to be built across US • Sioux Falls range nearing completion • In discussion with next two ranges • Goal is 6 or more ranges • Accuracy assessment tools to be developed • Removes human error, better results

  7. Range Locations ? Sioux Falls ? Pueblo, CO Rolla, MO ?

  8. Sioux Falls Range • 34 mi (54.7 km) E-W • 53 miles (85.3 km) N-S • Complete 12” (30cm) Orthoimagery cover • Sioux Falls city @ 6” (15cm) • City core at 3” (7.5cm) • Complete lidar coverage at >1m posting • 80+ signalized control points • Much more non-signalized to be added

  9. S.F. Range • 1st range • Prototype • Aerial + satellite • Additional ranges may vary in size

  10. 12-inch (30cm) Imagery

  11. 6-inch (15cm) Imagery

  12. 3-inch (7.5cm) Imagery

  13. Progress: Specification and Quality Assessment • Addresses 1st and 4th part of QA Plan 1) How to properly specify data 4) How to assess that product meets those specs • The “Spec & Check Tool” now under development • Web based • Help generate contract-ready specification language • Follow with line-by-line checklist for products • Helps to standardize inputs to industry • And standardize expectations! • Initially for use by USGS Liaisons (and partners) • Strongly User-Focused • Beta fielded by Sep.’09

  14. Prototype Screen

  15. Spec & Check Tool • Three Main Parts: • Specification generator • Assessment methods and tracking • Education! • The Educational / Tutorial section is critical! • Referred to throughout both halves of tool • Good for general education also • Continuous revision and improvement • Grows as our industry grows • Got any good ideas for this? • Good ideas, references, sources, partnerships always welcome!

  16. Additional Efforts & Thoughts • USGS EROS continues research into camera calibration • Being approached more people, more varieties • USGS Operates two large labs

  17. Additional Efforts & Thoughts • Some consumer cameras can be calibrated & used • Smaller cameras can be calibrated easier • Use smaller targets • Software improvements make calibration quicker & easier • Chip densities growing, detector pitch shrinking • Calibrate more often? • Opportunities for calibration services? • Operators/flyers do their own calibrations? • Where will it all go? • What are future sensors, platforms, and operations?

  18. Final Thoughts • The industry continues to advance • Technology not slowing down! • The USGS trying to keep up (& keep abreast) • More work needed • More research needed • And more collaboration, communication, and cooperation

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