Abstract

The contributions of Von Kries adaptation and cortical surround inhibition to color constancy and color induction are studied by using a neural network model of visual processing from the retina to area V4. We propose that the large silent surrounds in V4¹ carry out a push-pull operation that enhances or diminishes cone-specific contrast. The network does not explicitly estimate the illuminant spectrum nor make assumptions about the mathematical properties of illuminant-reflectance products. Using center-surround and Mondrian stimuli, we demonstrate that adaptation and contrast calculations cooperate to produce a broad range of color constancy and color induction behavior. Cone-specific contrast calculations account for spatial context effects, while adaptation accounts for luminance effects.² The relative contributions of adaptation and contrast to color perception depend on the color and luminance proper ties of the stimulus.

© 1992 Optical Society of America