12.1 Concepts

The concept of color is a very complex one, and many books have been written on the subject. Great thinkers like Aristotle, Huygens, Newton, Goethe, and many others developed theories of color. These theories dealt with physiology, philosophy, psychology, and even physics and high-level mathematics. The modern technology of computers, display screens, and printers now relies on a well-established theory that you can read about in any text on color theory.

In this section, we begin by briefly reviewing color models, which are presented in more detail in A.3 Color Representation. We’ll then consider the three internal representations that GIMP uses to store image information while you work. External formats used to store images on hard ...

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