Dynamic Contrast Requirements.
Abstract
Three experiments were conducted to investigate the spatial and temporal relationship between the human visual system and displayed imagery. In Experiment I, contrast sensitivity for sinusoidal gratings was determined as a function of spatial frequency, temporal frequency, luminance, and stimulus position on the retina. In Experiment II, contrast sensitivity for sinusoidal grids was determined as a function of the horizontal and vertical spatial frequency, and temporal frequency. In Experiment III, sinusoidal grating targets on grating surrounds were used to determine contrast sensitivity as a function of target spatial frequency, surround spatial frequency, and temporal frequency. The data from the three experiments indicate how much contrast is required under specified conditions to just detect a noise-free target defined in terms of its spatial and temporal frequency content. The results provide a means for predicting the visibility of targets in real displays.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1976
- Accession Number
- ADA023973
Entities
People
- Judith M. Erickson
- Leon G. Williams
Organizations
- Honeywell International, Inc.