Abstract: Realized is a 3D mosaic image generating technique enabling mapping of a material image with any polygon. Texture images are allocated to the polygons resulting from division on the basis of the input polygon number. The average density value of each base color of texture image portions is calculated as a target density value. The polygon in which one material image will be disposed is decided without reliance on the color density of the texture image, and the average density value of each base color within the material image is calculated. Each base-color density distribution rate for material images is maintained and the material images are color corrected so that the base-color average density values within material images become the target density values of the base colors of texture image portions within polygons.

Abstract: A mosaic image generating apparatus comprises: a segmenting unit which segments a target image into a plurality of blocks; a target image processing unit which calculates, as a target density value, an average density value of each basic color in each of the blocks; a determining unit which determines from the plurality of blocks a placement block on which the material image is to be placed, without being restricted by the image of the placement block; a calculating unit which calculates an average density value of each basic color in the material image; and a color correcting unit which performs a color correction on the material image such that the average density value of each basic color in the material image becomes the target density value of each basic color in the placement block while maintaining the density value distribution ratio of each basic color in the material image.

Abstract: A mosaic image generating apparatus comprises: a segmenting unit which segments a target image into a plurality of blocks; a target image processing unit which calculates, as a target density value, an average density value of each basic color in each of the blocks; a determining unit which determines from the plurality of blocks a placement block on which the material image is to be placed, without being restricted by the image of the placement block; a calculating unit which calculates an average density value of each basic color in the material image; and a color correcting unit which performs a color correction on the material image such that the average density value of each basic color in the material image becomes the target density value of each basic color in the placement block while maintaining the density value distribution ratio of each basic color in the material image.