Accession Number:

ADA125696

Title:

Spatial and Temporal Visual Masking and Visibility.

Descriptive Note:

Annual rept. no. 1, FY 1982,

Corporate Author:

NEW HAMPSHIRE UNIV DURHAM VISION RESEARCH LAB

Personal Author(s):

Report Date:

1982-10-01

Pagination or Media Count:

32.0

Abstract:

Substantial evidence supports the hypothesis that visual detection in the presence of masking noise occurs at a constant signalnoise ratio only if the subject is unfamiliar with the mask. A variety of studies of the proposed sustainedtransient mechanism model have failed to find support for a dichotomous visual system, and have failed to replicate some of the classical studies in this area. Studies of hypothetical velocity-tuned channels suggest the possible existence of such channels, but show that they are, at best, mixed in their tuning properties. Weissteing Pixel Flicker technique has been found to be an artifact of an unrealistic algorithm for adding noise to a visual scene. Other temporal enhancement schemes show some promise.

Subject Categories:

  • Psychology
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE