Download e-book for iPad: A field guide to digital color by Maureen Stone

By Maureen Stone

Annotation Maureen Stone's box consultant to electronic colour provides a survey of electronic colour with precise emphasis on these fields very important for special effects. The e-book presents the basis for realizing colour and its functions, discusses colour media and colour administration and using colour in special effects, together with colour layout and choice. The e-book presents a consultant for an individual who desires to  Read more...

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These colors interact in ways that defy the simple model presented by colorimetry. This chapter will describe the key concepts and models used in the study of color appearance. These influence the application of digital color, both for image and information display. Introduction The trichromatic encoding for color presented in Chapter 1 provides a way to measure colors represented as spectral distribution. For two colors to “look the same,” however, they must be viewed 21 A Field Guide to Digital Color alone, without any distracting background colors.

White is a color specific to these primaries, defined by summing them. Black maps to (0, 0, 0). The color cube retains a roughly cubical shape with three pairs of parallel sides, but its square faces are now parallelograms. There is still an achromatic axis along the main diagonal, and the fully saturated colors are still on the surface, which encloses the color gamut. For those familiar with 3D transformation matrices, this shape is a visual confirmation of the affine transformation (a combination of rotation, scaling, and skewing) described by the 3 × 3 matrix.

That is, add red to red, green to green, and blue to blue. 7). In mathematical terms, the R, G, and B form the axes of a three-dimensional color space. An RGB color space can be described as a unit color cube, with black at (0, 0, 0) and white at (1, 1, 1). The other corners of the cube are the primary colors (red, green, and blue) and the pairwise sums of the primaries, sometimes called the secondary colors (cyan, magenta, and yellow). These colors and their color values are shown in Figure 1.

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