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https://hdl.handle.net/11681/5037| 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. |
| URI: | http://hdl.handle.net/11681/5037 |
| Appears in Collections: | Research Note |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ETL-0298.pdf | 1.21 MB | Adobe PDF |  View/Open |