Image processing apparatus and method of controlling the apparatus

摘要

There is disclosed an image processing apparatus and a control method thereof in which input image data and generates a plurality of tile images, each including a substance region and overlap regions each of which overlaps with a part of each adjacent tile image, by dividing the input image data. The apparatus executes image processing separately on each of the plurality of the generated tile images, and when generating each tile image, converts a resolution of image data in the overlap regions such that the resolution of the image data in the overlap regions is smaller than a resolution of image data in the substance region.