METHOD AND APPARATUS FOR MEASURING COLOR-TEXTURE DISTANCE AND METHOD AND APPARATUS FOR DIVIDING IMAGE INTO DOMAINS USING THEM

摘要

PROBLEM TO BE SOLVED: To provide a method and apparatus for measuring a color-texture distance and a method and apparatus for dividing an image into domains using it. SOLUTION: The method for measuring the color-texture distance includes the step 10 of allocating respective different degrees of importance to differences in brightness, saturation and hue between two points on a color characteristic space constructed of color characteristic values which the pixels of an image have and then adding the differences in brightness, saturation and hue together in proportion to the allocated degrees of importance to thereby determine the color distance between the two points; the step 12 of determining the texture distance between the two points using both a difference in texture characteristic value between the two points on a texture characteristic space constructed of texture characteristic values for the pixels, and a weighting coefficient applied to the multiplicity of the texture; and the step 14 of multiplying the color distance by a color multiplication value, then multiplying the texture distance by a texture multiplication value, and adding the products of these multiplications together to determine the color-texture distance between the two points.