Abstract

There is a plethora of models in vision psychophysics that are of the same class and are designed to account for the results of detection and discrimination experiments in the spatial, temporal, chromatic, and luminance domains. This class of model, called channel models, is captured in the general expression where c₁,(t, x, y) is the space-time response of the ith channel, 0[ ] is a space-time operator that reduces c₁,(t, x, y) to a space-time constant (e.g., peak detector, power detector), n is a dimensionless parameter derived from the slope of the empirical psychometric function, and d is the threshold for detection or discrimination.

© 1988 Optical Society of America