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Color Theory Explained: Subtractive vs. Additive Mixtures in Biology and Computer Science

Understand the principles of color theory in both biology and computer science. Learn about the subtractive color mixing process in printing and painting, and the additive color mixing in RGB screens. Gain insights into the RYB and CMYB color models, and how to work with colors in Java programming. Explore the impact of primary colors on different media and devices. Enhance your knowledge of color representations and applications. Dive into this informative lecture series on color theory.

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Color Theory Explained: Subtractive vs. Additive Mixtures in Biology and Computer Science

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  1. Lab 7 Due Thursday 2 D arrays - embedding graphs in an array Computer Science Artifacts Abstraction Representations Algorithms sort, search, etc. Announcements & Review Lecture 24: Color

  2. Color • Biology - what you see • Subtractive primary colors • making colors from others on paper or mixing paint • Additive primary colors • making colors from others on your computer or TV Lecture 24: Color

  3. Subtractive Color Mixing In printing and painting • RYB - Red Yellow Blue • The RYB model combines Red Yellow Blue to create other colors. • Mixing paints is an absorptive or subtraction process • CMYB - Cyan Magenta Yellow Black Lecture 24: Color

  4. Additive Color Mixing • Screens - TV, computer, cell phone • RGB - Red Green Blue • The RGB additive light model combines Red Green Blue to create other colors. • RGB are the three primary colors in additive light models. • The specific shades are unspecified (and devices implement them differently). • http://mc2.cchem.berkeley.edu/Java/RGB/example1.html Lecture 24: Color

  5. Colors in Java Color constructor: Color(int r, int g, int b) • Each of these integers are between 0 and 255 Color myColor = new Color(100, 140, 180); int red = myColor.getRed(); int RGBvalue = myColor.getRGB(); http://java.sun.com/j2se/1.3/docs/api/java/awt/Color.html Lecture 24: Color

  6. Java Examples in BlueJ • Images as 2D arrays • Playing with colors Lecture 24: Color

  7. More Questions? Lecture 24: Color

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