The International Society for Photogrammetry and Remote Sensing (ISPRS) announced the society's role in a campaign designed to evaluate the new High Resolution Stereoscopic (HRS) instrument on SPOT-5.

The international evaluation campaign is being jointly organized by ISPRS and Centre National d'Etudes Spatiales (CNES) as an "HRS Study Team." The Study Team is managed by Manfred Schroeder, ISPRS Chair of Working Group I/2, Sensor Calibration and Testing, and Alain Baudoin (CNES). ISPRS invites inquiries about joining the Study Team: contact Manfred Schroeder via email at

The HRS instrument can acquire instantaneous along-track stereoscopic pairs on large areas (its swath width is 120 km). The spatial resolution of the panchromatic imagery is 10 meters. HRS is designed to acquire relative elevation accuracies between 5 and 10 meters, absolute accuracies in the range 10 to 15 meters.

Professor John Trinder, President of ISPRS, said "We appreciate the offer by CNES to work with us on this evaluation campaign. It will enable the community of photogrammetric and remote sensing scientists to test the capability of HRS data for the production of digital elevation models (DEMs). Team Members will get to use first generation data sets taken over test sites designed to assist them in their own assessment work for the evaluation. We believe that ISPRS was asked to participate in the evaluation because it is objective in its activities and it will therefore produce an unbiased report on the capabilities of SPOT-5 High Resolution stereoscopic data."

The assessment program will begin with selection of study areas in January 2003. On behalf of CNES, Spot Image will deliver HRS data by June 2003. Concurrently, Study Team Members will provide ground control data. Investigators will generate and evaluate DEMs by the end of 2003. Reports of results will be presented at the ISPRS Congress in Istanbul in July 2004.