Image processing apparatus and image processing method

摘要

An image processing apparatus which enables reduction of memory size required for image modification is provided. The image processing apparatus establishes a target block of the modification process; generates an image within the target block by storing an image within a referent block into a source memory area, and by referring the referent block image in the source memory area; generates entirety of the post-modification image by sequentially shifting the target block to a different position within the image modification area and by generating an image within the target block after each shift; computes a maximum block size of the referent block associated with the target block situated any available position prior to generation of the image; and allocates the source memory area capable of storing an image of a size equal to the maximum block size.