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Overview of USGS Calibration Activities


Overview of USGS Calibration Activities U.S. Department of the Interior U.S. Geological Survey – PowerPoint PPT presentation

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Title: Overview of USGS Calibration Activities

Overview of USGS Calibration Activities
U.S. Department of the Interior U.S. Geological
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

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

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

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

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

Extension of Stennis Test Site for Product
  • 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
  • Acceptance letter and final report provided to
    vendor and posted on USGS Web site

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

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

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

Recall Spectrum
  • Camera certification
  • System certification
  • Product characterization
  • Quality control of deliverables
  • Approved processing methods
  • Best practices by data providers
  • ISO certification

Seeking ASPRS support
  • Need to establish a formal certification process
    at several levels
  • Sensor manufacturers
  • Sensor acceptance by data provider
  • Monitoring Data providers best practices and
    processes to maintain system calibration
  • Product characterization of products offered
  • Guidelines for quality control of data and
    product deliverables

Web site and contacts
  • See http//calval.cr.usgs.gov
  • Greg Stensaas, 605-594-2569, stensaas_at_usgs.gov
  • George Lee, 650-329-4255, gylee_at_usgs.gov
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