International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part Bl. Istanbul 2004 
  
included a description of an SSC-developed system for the 
radiometric and spatial characterization of cross-track airborne 
sensors. The lab consists of several NIST-traceable blackbodies 
for thermal infrared radiometric characterization including 
water bath blackbodies observed by tour attendees. Other 
capabilities viewed in the lab included an SSC-developed active 
field target for in-flight spectral characterization and the testing 
of light emitting diodes, which have potential to be the next- 
generation of radiometric calibration sources. 
2.2 Technical and Discussion Sessions 
The Workshop was conducted entirely in plenary as a sequence 
of seven technical sessions: 
e Identifying and describing sensor parameters 
e Standards and guidelines 
e Methods and approaches for radiometric calibration 
e Methods and approaches for geometric calibration 
e Inter-sensor calibration 
e Examples of sensor and image characterization 
programs 
e Test sites and ranges. 
Interspersed with the technical sessions were four discussion 
sessions focused on the Task Force terms-of-reference. After 
concluding the formal technical and discussion sessions, the 
Task Force assembled to further discuss plans and strategies for 
follow-on activities. It was generally agreed that "image 
quality” is the pervasive attribute of interest to most data and 
imagery users, and that the basis of image quality resides in 
documenting both pre-launch and post-launch calibration 
parameters. 
3. FINDINGS 
3.1 Available Resources 
A variety of documents and standards already exist upon which 
to build calibration terms, definitions, and measurement 
methodologies. While the results of the task force meeting in 
Gulfport began its work, as set forth in the CEOS Resolution, it 
is clear that this should not be pursued in a vacuum. Among the 
pre-existing available materials are the following: 
1 Prokhorov, A.V., V.I. Sapritsky, O.M. Mikhaylov, V.P. 
Zakharenkov, V. Privalsky, T.Humphreys, R. Datla, and L.K. 
Issaav (in technical review): Spaceborne Optoelectronic 
Sensors and Their Radiometric Calibration: Terms and 
Definitions (Part 1) Calibration Techniques. This work is a joint 
effort between Vega International, Inc.; Vavilov State Optical 
Institute, St. Petersburg, Russian Federation; and, Space 
Dynamics Laboratory, Utah State University, USA; Editorial 
support is being provided by NIST and the Russian Institute of 
Metrological Service, Russian Federation. The work is very 
comprehensive in both Russian and English. Status: Undergoing 
2nd editorial revisions, expected release 2005. 
2.International Standards Organization (ISO), Technical 
Committee 211 (TC211), Working Group 6 is the forum for 
ISO 19130 and ISO 19101-2. Both are in draft stages, but 
utilize definitions either in common use, or already formally 
agreed upon internationally in source documents such as the 
International Vocabulary of Basic and General Terms in 
Metrology (VIM), various CIE publication, Geospatial One- 
Stop, and other published ISO standards. 
3. Several ISO, either completed or in draft stages should be 
reviewed by the task force and used as sources of definitions. 
Among the known standards are the following: 
a 19101.2 Geographic Information-Reference Model-Imagery 
b 19115 Geographic Information-Metadata 
c 19115.2 Part-2-Metadata for Imagery and Gridded Data 
d 19121 Geographic Information-Imagery and Gridded Data 
e 19124 Geographic Information-Imagery and Gridded Data 
Components 
19130 Geographic Information-Sensor and Data Models for 
Imagery and Gridded Data 
19130 (project team) Proposed standard on radiometric 
calibration and validation. WG6 of TC211 has approved the 
project, which must now be approved by US INCITS-LI as a 
U.S. Contribution to ISO TC211. 
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4 CIE. 1987. The International Lighting Vocabulary, 4th 
edition. 
5 Several Russian Federation and Former USSR publications 
a GOST 7601-78 Physical Optics: Terms, Symbols, and 
Definitions of Basic Optics 
b GOST 26148-84: Photometry: Terms and Definitions 
c GOSTs 8.417-81, 16263-70, 27176-86 
6 Several United States Standards: 
a ANSI Standard Z7.1-1967: Nomenclature and Definitions for 
Illuminating Engineering 
b ASTM Standard E284-99a: Standard Terminology of 
Appearance 
International Union of Pure and Applied Chemistry. Names, 
Symbols, Definitions, and Units of Quantities in Optical 
Spectroscopy. Spectrochimica Acta, 1987, 43A91):1-9. 
d Military Standard on Infrared Terms and Definitions AD-784 
341, December 1971. 
Shapiro, 1.J. 1975. Reference Book of Radiometric 
Nomenclature, John Wiley and Sons. 
€ 
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7 Wyatt, C.L., V. Privalsky, and R. Datla. 1998. Recommended 
Practice: Symbols, Terms, Units and Uncertainty Analysis of 
Radiometric Sensor Calibration. NIST Handbook 152 
8 Wyatt, C.L. and V. Privalsky. 1996. Recommended Practice: 
Symbols, Terms and Units for Space-based Infrared Sensor 
System Calibration and Uncertainty Analysis. Space 
Dynamics Laboratory, Utah State University, Logan, UT. 
9 Prokhorov, A., V. Sapritsky, and V. Privalsky. 2001. Ground- 
based Radiometric Calibrations of Space-borne IR Sensors. 
Terms and Definitions, Part 1. Calibration Techniques, New 
York. 
10 Dinguirard, M. and P.N. Slater. 1999. Calibration of Space 
Multispectral Imaging Sensors: A Review. Remote Sensing 
of Environment 68(3): 194-205. 
11 Light, D. 2004. A Basis for Estimating Digital Camera 
Parameters. PE&RS 70(3): 297-300. 
12 American Society for Photogrammetry and Remote Sensing. 
1994. Glossary of the Mapping Sciences. Co-published by 
the American Congress on Surveying and Mapping and the 
American Society of Civil Engineers. 594 pp.