3-color - Syllabus and lectures at Color Lecture 3

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1 Color Lecture 3 CPSC 478/578 Spring 2005 • Syllabus and lectures at http://classes.yale.edu/cpsc478b Next week: meet WEDNESDAY (Prof. Dorsey will be lecturing) Reading: Chaps. 3, 17, 18 • Consider – CPSC 479b/579b Sketch-Based Interfaces and Modeling Today, 3:30, AKW 307 (normally on MONDAYS) Three Important Aspects of Color 1.Color perceptual, not physical An idea in your mind, not a unique property of the light Three Important Aspects of Color 1.Color perceptual, not physical 2. Trichromatic Theory for humans, color is 3 dimensional e.g. for chickens, color is 12 dimensional Three Important Aspects of Color 1.Color perceptual, not physical 2. Trichromatic Theory for humans, color is 3 dimensional 3. Opponent Process Theory black -> white, red ->green, yellow blue Different sensitivies for different trade - offs
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2 Implications 1.Trichromatic: makes color displays possible Your TV can’t emit the same light as the sky, but you think you can see sky blue. Implications 1. Trichromatic: makes color displays possible 2. Trichromatic: makes color navigation simple You can move around a simple interface to change colors. Implications 1. Trichromatic: makes color displays possible 2. Trichromatic: makes color navigation simple 3. Trichromatic: can define device independent colors You can display colors on different devices consistently Implications 1. Trichromatic: makes color displays possible 2. Trichromatic: makes color navigation simple 3. Trichromatic: can define device independent 4. Opponent: natural sequencing of colors 0. 1. .5 What’s the natural choice for in between (there is one)! Implications 1. Trichromatic: makes color displays possible 2. Trichromatic: makes color navigation simple 3. Trichromatic: can define device independent 4. Opponent: natural sequencing of colors 5. Opponent: some special colors The basic colors that people name are the same across cultures. Colors not seen by those who are color -b lind. Three Important Aspects of Color 1.Color perceptual, not physical 2. Trichromatic Theory 3. Opponent Process Theory
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3 What is light?? Energy What is light?? Energy 1666 Isaac Newton Behavior of light – its not all the same What is light?? Electromagnetic energy at different wavelengths What is light??
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3-color - Syllabus and lectures at Color Lecture 3

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