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|Title:||An analysis of a relaxation scheme to improve terrain elevation data|
|Authors:||Crombie, Michael A.|
Shine, James A.
Digital terrain matrix
|Publisher:||U.S. Army Engineer Topographic Laboratories.|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ETL ; 0298.|
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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|ETL-0298.pdf||1.21 MB||Adobe PDF|