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6 CONCLUSIONS
We have given a computational model for color per-
ception. The retinal response is assumed to follow a
cube root relationship. The first stage is adaptation
followed by a temporal averaging process. By the
time the visual stimulus has reached V1, a rotation
of the coordinate system has occurred. In V4, local
space average is computed through a resistive grid.
This resistive grid is created by neurons which are lat-
erally connected via gap-junctions. A color constant
descriptor is computed by subtracting local space av-
erage color from the signal which is received from
V1. Another temporal averaging occurs at the last
stage. We have shown that this model is able to re-
produce an important result from experimental psy-
chology, namely that color constancy improves for a
moving stimulus.
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