Accession Number : ADP000135

Title :   Detection of Errors in Match Disparities,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB

Personal Author(s) : Hannah,Marsha Jo

Report Date : 1982

Pagination or Media Count : 13

Abstract : Most processes that use the disparities resulting from stereo image matching make the unrealistic assumption that every match obtained was correct. Unfortunately, match errors can occur for a variety of image- and terrain-related reasons. Such errors produce undesirable effects when the disparity data is further processed (for instance, to form a scene model), and should be detected and corrected as early in the processing as possible. Algorithms have been developed to detect errors in disparities derived from aerial photographs of terrain. These algorithms constrain the allowable magnitude of the second derivatives of disparities in local areas around each point. Relaxation-like techniques are employed in the iteration of the detection process. (Author)

Descriptors :   *Image processing, Optical images, Errors, Matching, Algorithms, Stereomapping

Distribution Statement : APPROVED FOR PUBLIC RELEASE