Quantization of color images based on uniform color spaces

摘要: Digital devices for display or printing of color images may be characterized by their ability to generate colored spots centered at points on a fixed spatial lattice. Each spot assigned one finite number values. For reasons economy in hardware design and data representation, it is desirable use as small set different values possible. We investigate algorithms selecting this output colors alternate spaces chosen perceptual basis. These utilize quantizers that range complexity from being separable, uniform, image independent, nonseparable, nonuniform, dependent