Patent ID: 6680741
Filing Date: 2004-01-20
Classification: G06T

Abstract:
An image preprocessor in which a screen is divided into regions of a predetermined size and processing is performed in every divided region, comprising:first rearranging means for rearranging pieces of information on a plurality of image constituting elements constituting at least an image depicted on the screen, in a direction vertical to a scanning line; second rearranging means for rearranging the pieces of information on the plurality of image constituting elements in a direction horizontal to the scanning direction; and an image processing unit not only taking in, from the rearranged pieces of information on the plurality of image constituting elements, pieces of information on the plurality of image constituting elements corresponding to regions at which the processing is performed, but also performing image processing; wherein the image processing unit, as to image processing for each divided region, not only sections objectives to be processed into opaque polygons, polygons with transparent pixels, and semitransparent polygons but also processes in the order of the opaque polygons, polygons with transparent pixels, and semitransparent polygons.