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Title: An analysis of a relaxation scheme to improve terrain elevation data
Authors: Crombie, Michael A.
Shine, James A.
Keywords: Relaxation
Elevation correction
Digital terrain matrix
Stereo correlation
Publisher: U.S. Army Engineer Topographic Laboratories.
Engineer Research and Development Center (U.S.)
Series/Report no.: ETL ; 0298.
Description: Research note
Abstract: Elevation matrices derived from correlation of digital stereo images often contain errors resulting from a breakdown of the correlation process. One such matrix was corrected using a relaxation algorithm where each point was given a reliability based on comparison with its nearest and next nearest neighbors. These reliabilities were then used to determine if and how much a point was to be corrected; the process was iterated. The algorithm removed small error areas, but large erroneous regions were not corrected, even when terrain slope classification information was considered.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Research Note

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