Accession Number : ADA136769

Title :   Design Criteria for Reducing 'Popping' in Area-of-Interest Displays: Preliminary Experiments.

Descriptive Note : Final interim rept. 1 Sep 81-31 Aug 83,


Personal Author(s) : Berbaum,K S

PDF Url : ADA136769

Report Date : Sep 1983

Pagination or Media Count : 64

Abstract : A helmet-mounted display being procured for the Navy's Visual Technology Research Simulator will display two computer-generated images of the scene to be viewed by the trainee pilot, the first inset inside the second, following eye direction and showing a higher level of detail version of the scene than the second, low resolution, low detail, wide angle image. Experiments in which spatially and temporally varying sinusoidal bar patterns are displayed on an Optronix Vision Tester suggest that a contrast blend region around the inset will be effective in suppressing the 'popping' of objects and image detail in and out of view as they move across the inset boundary. These experiments also suggest a restriction upon scene modeling which may be helpful in mitigating popping--namely that the largest size of detail associated with a form (the external border between form plus shadow, and background) be changed least. (Internal contours are added or subtracted first.) In further experimentation, locus of attention is shown to have little effect upon perceived popping, but adaptation may have large effects.

Descriptors :   *Helmet mounted displays, *Computerized simulation, *Image processing, *Human factors engineering, Images, Line of sight, Warning systems, Signals, Eye, Coupling(Interaction), Eye movements, Orientation(Direction), Visual perception, Space perception, Retina, Eccentricity, Models, Contrast, Sensitivity, Resolution, Attention, Adaptation, Experimental data

Subject Categories : Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE