Back to articles
Articles
Volume: 8 | Article ID: art00003
Image
Chromatic Variation: A Fundamental Property of Images
  DOI :  10.2352/CIC.2000.8.1.art00003  Published OnlineJanuary 2000
Abstract

An isolated light has a color appearance specified reasonably well by its wavelength, but the same light within a complex image can appear a quite different hue. How does the context of an image affect the appearance of an embedded light? A classical approach is to aggregate light from throughout the image to determine an equivalent uniform background that has the same effect as the complex stimulus. Several models have been proposed to determine this ‘equivalent background’, including simple averaging of light, spatial weighting, and nonlinear neural responses. The main point of this paper is that none of these models can succeed because variation within a complex image is a fundamental property of it. Studies show that color perception depends on a chromatic-contrast gain-control mechanism, which is regulated by chromatic variation over a large area. Any uniform field has no variation, of course, so cannot mimic the color shifts caused by a complex image.

Subject Areas :
Views 6
Downloads 0
 articleview.views 6
 articleview.downloads 0
  Cite this article 

Steven K. Shevell, "Chromatic Variation: A Fundamental Property of Imagesin Proc. IS&T 8th Color and Imaging Conf.,  2000,  pp 8 - 12,  https://doi.org/10.2352/CIC.2000.8.1.art00003

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2000
72010350
Color and Imaging Conference
color imaging conf
2166-9635
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA