Transcript Document 7470563

Mapping the Path to
Digital Sensor Calibration
ASPRS Photogrammetry - Part2: Digital Sensor
Calibration: Research, Policies, and Standards
March 2005
Greg Stensaas
USGS EROS
[email protected]
U.S. Department of the Interior
U.S. Geological Survey
National Center for EROS
Remote Sensing Technologies Group
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History
USGS has been calibrating aerial film cameras since
1973
USGS actively involved with establishing requirements
and standards for photo imagery for many years
Film camera standards since 1950’s with the National Bureau
of Standards
National Map Accuracy standards since the 1940’s
In 1999 ASPRS panel asked USGS to develop standards,
policies and guidelines for the digital aerial mapping
community
USGS Land Remote Sensing Program has a crosscenter project team actively working to answer ASPRS
recommendations
U.S. Department of the Interior
U.S. Geological Survey
2
ASPRS Recommendations
1.
2.
3.
4.
The USGS Optical Science Laboratory (OSL) should
continue to calibrate film mapping cameras using the
present calibrator and the Simultaneous Multiframe
Analytical Calibration (SMAC) program.
Initiate the design, development, and implementation of
a digital camera calibration capability at the USGS (est.
required investment - $4 M).
Conduct research efforts in order to support a reliable
and cost effective transition to digital acquisition
systems (est. required investment - $1 M)
Initiate the design, development and implementation of
an in situ (flight) calibration process.
U.S. Department of the Interior
U.S. Geological Survey
3
ASPRS Recommendations
5.
6.
7.
8.
The USGS Optical Science Laboratory (OSL) should
continue to calibrate film mapping cameras using the
present calibrator and the Simultaneous Multiframe
Analytical Calibration (SMAC) program.
Initiate the design, development, and implementation of
a digital camera calibration capability at the USGS (est.
required investment - $4 M).
Conduct research efforts in order to support a reliable
and cost effective transition to digital acquisition
systems (est. required investment - $1 M)
Initiate the design, development and implementation of
an in situ (flight) calibration process.
U.S. Department of the Interior
U.S. Geological Survey
4
The USGS Responds…..
U.S. Department of the Interior
U.S. Geological Survey
5
One: Continue Operating OSL
1.
“The USGS Optical Science Laboratory (OSL) should continue to
calibrate film mapping cameras using the present calibrator and
the Simultaneous Multiframe Analytical Calibration (SMAC)
program.”
Ongoing today
USGS has invested in upgrades and continues to do so
Hardware upgrades, electronics, software
USGS in year-long search for glass plates
Finally identified Agfa plates that will work
Investing in multi-year glass plate supply
Continuing to investigate film and electronic alternatives
The USGS is committed to continuing OSL operations
for foreseeable future
U.S. Department of the Interior
U.S. Geological Survey
6
Two & Three: Research/Build Digital
Capabilities
2.
3.
“Initiate the design, development, and implementation of a digital
camera calibration capability at the USGS (estimated required
investment - $4 M).”
“Conduct research efforts in order to support a reliable and cost
effective transition to digital acquisition systems (estimated
required investment - $1 M)”
USGS has already invested in the following research capabilities
Pictometry for Small/Medium-Format calibration cage
OSU for In-Situ methodology for digital (and potentially film?)
SDSU-developed MTF tools; lab & in-situ;
Requesting funding for additional capabilities
Additional development & validation in-situ
Build & expand USGS sensor laboratory at EDC
Further work on MTF tool; radiometry?
(more in Future Plans – Jon Christopherson briefing)
U.S. Department of the Interior
U.S. Geological Survey
7
Four: In-Situ Calibration
4. “Initiate the design, development and implementation of
an in situ (flight) calibration process.”
USGS working with OSU, SDSU, industry, manufacturers
to test and validate several different methods
Developed in-situ ranges for independent validation
Incorporates EROS instrumentation capabilities
USGS actively involved with industry and NASA SSC in
Digital Airborne Product Verification (see Phil Rufe’s
presentation)
Digital Sensor manufacturers and work this and are
interested in making things happen
Very promising!
U.S. Department of the Interior
U.S. Geological Survey
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Five: Satellite Data
5. “A calibration/verification process must be established for satellite
imagery.”
USGS, partnered with NASA and NGA, leading the Joint Agency
Commercial Imagery Evaluation (JACIE) team.
On-going for four years now
Hosted at USGS Headquarters in Reston
JACIE evolving to address airborne and international datasets
USGS leading CRSSP implementation
USGS also involved in other Satellite Cal/Val
Landsat(s) 5 & 7, EO-1 ALI and Hyperion, LDCM
International – Surrey Satellite, CBERS-2, ResourcesSat-1
Active in CEOS WGCV, EuroSDR, ASPRS/ISPRS
RObotic Lunar Observatory (ROLO)
U.S. Department of the Interior
U.S. Geological Survey
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Six: Develop Standards
6. Develop a U.S. Standard for camera and sensor
calibration.
USGS has had standards for other data for years
Existing National Map Accuracy Standards served paper
maps for decades
DOQ standards served initial digitized aerial imagery
The limited capabilities of the sensors and processes
originally used in producing digital orthoimagery led to
simpler standards (primarily geometry)
The USGS is leading an effort to define new Digital
Remote Sensing Data standards
Desire ASPRS and industry participation
Possibility for international standards w/ ISPRS
U.S. Department of the Interior
U.S. Geological Survey
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Six: Develop Standards (cont.)
Inter-Agency Digital Imagery Work Group (IADIWG)
established
•
•
•
•
•
•
Cooperating agencies: BOR, BLM, COE, EPA, FSA, FWS,
NIST, NGA, NOAA, NRCS, USFS, and USGS
Kickoff meeting held and draft charter developed
Draft specifications, guidelines, and standards for digital
image acquisition being worked
Host workshop to review draft specifications, guidelines,
and standards – Summer 2005
Draft Final presented to ASPRS PECORA 16 - October
2005
Other potential efforts
•
•
•
U.S. Department of the Interior
U.S. Geological Survey
Other digital data types and data formats
Help compile aerial data requirements and contract vehicles
ASPRS PDAD Geospatial Image Quality Commission
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Seven: USGS Funding
7.
Adequate funding should be sought in order to ensure the
continued operation of the Optical Science Laboratory (OSL),
as well as to provide for the improvements and extensions
described in the preceding recommendations.
OSL calibrations are paid by fees charged to
camera owners
Fees likely to increase in FY06
This will be first fee increase since 1999
USGS funding has been limited
Many tasks – limited funds
Project is established and ready for growth

Optimistic for future
Inter-agency funding support?
U.S. Department of the Interior
U.S. Geological Survey
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