Accession Number : ADA019132

Title :   Investigation of Techniques to Generate Contours from Stereo-Pairs.

Descriptive Note : Contract rept.,

Corporate Author : ROCHESTER UNIV N Y INST OF OPTICS

Personal Author(s) : Balasubramanian,N. ; Bennett,V. P.

Report Date : OCT 1975

Pagination or Media Count : 127

Abstract : The detection of the regions of conjugate image coincidence between two transparencies through correlation forms the basis for automated stereo-compilation systems. In this report a method of detecting the coincidence of conjugate images from a stereo-pair of transparencies using heterodyned optical correlation techniques is described in detail. Other methods of coincidence detection based on optical processing system concepts are also proposed and demonstrated. The theoretical basis for each of these methods is described and the experimental results are presented to substantiate the basic concepts. A critical evaluation of these systems from the point of view of operational requirements is also presented. (Author)

Descriptors :   *Stereomapping, *Contours, *Photogrammetry, Mapping, Automation, Methodology, Heterodyning, Correlation techniques, Optical correlators, Coherence, Light transmission, Transparencies, Correlators, Models

Subject Categories : Cartography and Aerial Photography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE