作者: Yoshio Tozawa
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摘要: A color quantization system for image displays is disclosed which uses a three-dimensional histogram of an original to determine the particular colors be simultaneously displayed. The number pels within each sub-space defined on whole space calculated, and subspace having largest selected display from among sub-spaces, other than sub-spaces represented by have been already simultaneous display, if it determined that relationship ##EQU1## satisfied, wherein M said pels, N all displayed, in determined, n1 n2 display. When this not size incremented until sufficient are included select color, selection process continued considered, i.e., N-A=0.