Introduction to Color - Brown University
Introduction to Color - Brown University
Introduction to Color - Brown University
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CS123 | INTRODUCTION TO COMPUTER GRAPHICS<br />
Spatially Opponent Cells<br />
<br />
<br />
<br />
Some cells in opponent channels are also spatially opponent, a type of lateral inhibition (called doubleopponent<br />
cells)<br />
Responsible for effects of simultaneous contrast and after images<br />
<br />
Plus…<br />
<br />
green stimulus in cell surround causes some red excitement in cell center, making gray square in<br />
field of green appear reddish<br />
color perception strongly influenced by context, training, etc., abnormalities such as color<br />
blindness (affects about 8% of males, 0.4% of females)<br />
Andries van Dam<br />
<strong>Color</strong> 48/57
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