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|Title:||Parallel optical processing to convert elevation data to slope maps. Phase II, Practical considerations|
|Authors:||Geographic Sciences Laboratory.|
Hecht, Avron S.
Coherent optical data processing
Military geographic area analysis
|Publisher:||U.S. Army Engineer Topographic Laboratories.|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Research note (U.S. Army Engineer Topographic Laboratories) ; ETL-RN-74-12.|
Abstract: The considerations in designing and calibrating a coherent optical data processing system for quantitative slope computation from a transparency with amplitude transmittances as a function of surface terrain elevations are described in this report. Methods of designing the spatial filter and criteria for selecting the optical system components to minimize the errors in determining slopes are described. Procedures for calibrating the input transparency and the optical system are specified.
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