Patent ID: 6558006
Filing Date: 2003-05-06
Classification: G03B,G06T,H04N

Abstract:
An image projection display apparatus having:a plurality of projectors; a projection screen functioning as an image-formation surface for projected images of said plurality of projectors, having mutually overlapping areas; a test image memory unit for storing predetermined test images; an image capture unit for capturing projected test images resulting from projecting said predetermined test images by said respective projectors onto said projection screen; a compensation data calculator for calculating, based on said captured projected test image, compensation data for correcting output characteristics of said respective projectors; a compensation data memory unit for storing said compensation data; an input image divider for dividing input images in correspondence with said respective projectors; and an image compensator for subjecting said input images input to corresponding projectors to compensations, using output characteristic compensation data for said respective projectors wherein, in said image capture unit, when projected test images are captured, capturing is performed, divided into a plural number of captures, so that overlapping occurs, and overall image of test images is obtained by joining together multiple images divisionally captured.