Accession Number : AD0692200

Title :   COMPUTER RECOGNITION OF THREE-DIMENSIONAL OBJECTS IN A VISUAL SCENE.

Descriptive Note : Doctoral thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE PROJECT MAC

Personal Author(s) : Guzman-Arenas,Adolfo

Report Date : DEC 1968

Pagination or Media Count : 290

Abstract : Methods are presented: (1) to partition or decompose a visual scene into the bodies forming it; (2) to position these bodies in three-dimensional space, by combining two scenes that make a stereoscopic pair; (3) to find the regions or zones of a visual scene that belong to its background; (4) to carry out the isolation of objects in (1) when the input has inaccuracies. Running computer programs implement the methods, and many examples illustrate their behavior. The input is a two-dimensional line-drawing of the scene, assumed to contain three-dimensional bodies possessing flat faces (polyhedra); some of them may be partially occluded. Suggestions are made for extending the work to curved objects. Some comparisons are made with human visual perception. The main conclusion is that it is possible to sseparate a picture or scene into the constituent objects exclusively in basis of monocular geometric properties (in basis of pure form); in fact, successful methods are shown. (Author)

Descriptors :   (*PATTERN RECOGNITION, GEOMETRIC FORMS), (*COMPUTER PROGRAMMING, PHOTOINTERPRETATION), ARTIFICIAL INTELLIGENCE, SPACE PERCEPTION, STEREOSCOPIC DISPLAY SYSTEMS, GRAPHICS, VISUAL PERCEPTION, ILLUSIONS, THESES

Subject Categories : Computer Programming and Software
      Bionics

Distribution Statement : APPROVED FOR PUBLIC RELEASE