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International Workshop on Radiometric and Geometric Calibration Aims and Goals

International Workshop on Radiometric and Geometric Calibration Aims and Goals Bruce A. Davis, Ph.D. Co-Chair, CEOS/ISPRS Cal/Val Joint Task Force . Background (how we got here).

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International Workshop on Radiometric and Geometric Calibration Aims and Goals

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  1. International Workshop on Radiometric and Geometric Calibration Aims and Goals Bruce A. Davis, Ph.D. Co-Chair, CEOS/ISPRS Cal/Val Joint Task Force

  2. Background (how we got here) • Joint Task Force originated from the CEOS WGCV Terrain Mapping Sub Group on the premise that a standard format for sensor parameters should be established. A resolution was passed that stated: • Noting the disparate way in which Earth observing sensor parameters are specified and quoted, and • Recognizing that proper use, understanding and intercomparison of sensor parameters depends on clear unambiguous definition, • WGCV Recommends that a task force be established with ISPRS to formulate a plan for standardization of radiometric and geometric parameters of sensors.

  3. Terms of Reference • Collect and collate lists of parameters used to describe Earth observing sensors. • Make an analysis of these and recommend a standard list of parameters for presenting descriptions of EO satellites. • Identify ambiguity and confusion within these terms and recommend methods and means of clarifying these issues • Prepare a document that sets out standard methods of describing EO sensors • Communicate and consult widely with the user community

  4. Purpose (Why we are here) • The purpose of this workshop is to: • Review best practices for post-launch calibration of commercial aerial and satellite sensor imagery for government uses, • Explore possibilities for standardizing calibration practices, and, • The Workshop will lead to: • A Presentation of these results to the ISPRS General Assembly as a Joint ISPRS/CEOS-WGCV report.

  5. Possible Problem & Resolution • Problem - The goal of listing and analyzing the many parameters use to describe Earth observing sensors is very ambitious. A recommendation to the full ISPRS Commission is needed by July of 2004. • Opportunity - During this workshop there will be several presentations that refer to both sensor systems and data products derived from those sensor systems. • Resolution - The Joint Task Force may want to consider putting forth recommendations concerning a subset of parameters that are discussed at this workshop. • This does not mean that any topic of discussion at this workshop is lost or less important. • Taking a smaller piece of work and completing it will be better than not completing a larger amount of work in the eyes of the ISPRS Commission.

  6. Transition of Chair • Vicki Zanoni will take over the duties of Joint Task Force Chair for the remainder of its life. • Vicki will present the findings from this workshop and represent the Joint Task Force at the ISPRS General Assembly meeting in July

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