Patent ID: 7334899

Claim:
An image processing system comprising: correction means for correcting an image signal so as to adjust image distortion; image projection means for projecting an image based on the image signal; sensing means for sensing the projected image along an optical axis which does not coincide with an optical axis of the image projection means in order to generate sensing information; image analysis means for generating edge point information and brightness index value distribution information, based on the sensing information, the edge point information showing a position of a predetermined edge point of the projected image in the sensed image, and the brightness index value distribution information showing a distribution of brightness index values of the projected image; and correction information generation means for generating projection distance information which shows a projection distance, based on the edge point information, and generating correction information for correcting the image signal, based on the projection distance information and the brightness index value distribution information; wherein the correction information generation means generates temporary correction information based on the brightness index value distribution information and corrects the temporary correction information to generate the correction information in which the optical axis of the sensing means coincides with the optical axis of the image projection means, based on the projection distance information; and wherein the correction means corrects the image signal based on the correction information.