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 />
Our Visual System Constructs our Reality (2/3)<br />
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Perceptual invariants are crucial for sense-making<br />
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Size, rotation and position constancy of objects despite varying projections on the eye (but not<br />
always!)<br />
<strong>Color</strong> constancy despite changing wavelength distributions of illumination<br />
Person recognition despite everything else changing and very poor viewing conditions<br />
Optical illusions<br />
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<br />
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<br />
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Completing incomplete features, such as seeing “false” size differences due <strong>to</strong> context<br />
Seeing differences in brightness due <strong>to</strong> context, negative afterimages, seeing “false” patterns<br />
and even motion<br />
Seeing 3d (perspective, camera obscura, sidewalk art)<br />
But also artifacts: misjudgments, vection (apparent motion)<br />
Examples<br />
Miscellaneous1, Miscellaneous2, Afterimages, Vection, Forced Perspective<br />
Andries van Dam<br />
<strong>Color</strong> 9/57
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