LINE-OF-SIGHT DETERMINATION FROM DIGITIZED IMAGERY
The basic notion of regarding the photograph as the primary data base is used to develop three single-model techniques for determining whether line-of-sight exists between any two points within a stero model. Two of the techniques use digital imagery. Only one of the methods is analyzed numerically. Matching processes using correlation methods are applied to a pair of digital images to determine the line-of-sight of two points 1,200 meters apart. A microdensitometer with comparator capabilities created the digital gray shade data. The third technique, a visual one, requires that the model be set up in a stereoscopic device.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00991112
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Corporate Authors:
American Society of Photogrammetry
105 North Virginia Avenue
Falls Church, VA United States 22046 -
Authors:
- Crombie, M A
- Ackerman, D L
- Publication Date: 1976-9
Media Info
- Features: Figures; References;
- Pagination: p. 1151-56
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Serial:
- Photogrammetric Engineering and Remote Sensing
- Volume: 42
- Issue Number: 9
- Publisher: American Society for Photogrammetry and Remote Sensing
- ISSN: 0099-1112
Subject/Index Terms
- TRT Terms: Correlation analysis; Digitized photography; Imagery; Line of sight; Stereoscopic models
- Old TRIS Terms: Stereo models
- Subject Areas: Data and Information Technology; Design; Highways;
Filing Info
- Accession Number: 00142583
- Record Type: Publication
- Files: TRIS
- Created Date: Dec 15 1976 12:00AM