Abstract

The response of visual filters has been used to simulate vision and to design image enhancement techniques for the visually impaired. For the simulations and enhancements to be useful, they must be based on appropriate measurements of the filters being studied. Most previous measurements of spatial contrast sensitivity functions (CSFs) have been based on stimuli that give maximal contrast sensitivity. We measured CSF using stimuli that are better suited for analyzing perception of images. Use of the different types of CSF yields notably different simulations.

© 1990 Optical Society of America