Color Spaces for Image Representation and Image Processing

Attributes which make a color space advantageous for the representation of digital images in publishing applications will be reviewed. Properties which make a space well-suited for basic representation of color images will be shown to be a subset of those which make it desirable for environments in which significant editing and processing of those images occur. The detailed presentation of results will emphasize considerations of efficiency. First, compressibility will be considered with respect to the efficiency of utilization of bits and to perceptual uniformity. Then, data on the efficiency of utilization of a regular quantization scheme for storing images will be discussed with reference to the gamuts of media relevant to the Graphic Arts.