Accession Number : ADA320014

Title :   Space Perception with Normal and Prosthetic Vision.

Descriptive Note : Final rept. 1 May 94-30 Apr 96,

Corporate Author : RUTGERS - THE STATE UNIV PISCATAWAY NJ

Personal Author(s) : Hadani, Itzhak ; Julesz, Bela

PDF Url : ADA320014

Report Date : 23 DEC 1996

Pagination or Media Count : 204

Abstract : This report encompasses: (a) A unique and metric solution for the differential equations that specify the optic-flow of monocularly navigating observer; (b) A report on a correlation between individual differences in interocular distance and registered depth in random dot stereogram with and without pedestal disparities; (c) Expansion on a navigational approach to space perception - SPIN theory - which suggests that object constancy is obtained during fixations by pure passive navigation computations, and across saccades by a combination of ocular and vestibular signals. It is suggested that the VOR constraints the rotational and velocity components of the eye to be perpendicular; (d) Analysis of the degree of uncertainty offered by the inferential, direct, and computational approaches in cognitive psychology as illustrated by their window metaphors. Visual stability in normal and prosthetic vision is examined and leads to newly stated magnification and distance paradoxes. A telescope metaphor, which is a modified Mach-Gibson visual-ego metaphor with a zooming feature, is suggested as a model that can resolve the paradoxes; (e) A computer system which simultaneously displays motion parallax yoked to head movement and binocular disparity, with measurements of the virtual parallax evoked by head movements in static RDS.

Descriptors :   *COMPUTER VISION, *VISUAL PERCEPTION, *SPACE PERCEPTION, IMAGE PROCESSING, UNCERTAINTY, COGNITION, PASSIVE SYSTEMS, OPTICAL IMAGES, DIFFERENTIAL EQUATIONS, DATA DISPLAYS, PERCEPTION(PSYCHOLOGY), IMAGE MOTION COMPENSATION, BINOCULARS, EYE MOVEMENTS, PARALLAX COMPUTERS, STEREOSCOPIC DISPLAY SYSTEMS, STEREOSCOPIC RANGE FINDING.

Subject Categories : Cybernetics
      Bionics

Distribution Statement : APPROVED FOR PUBLIC RELEASE