Patent ID: 6124685
Filing Date: 2000-09-26
Classification: H04N

Abstract:
A method for correcting distortion of an image displayed on a screen of a display device, said method comprising the steps of:(a) taking a picture of a test pattern displayed on the screen of said display device in an adjusting state;(b) extracting distortion information representing distortion of the test pattern from an image obtained from a result of the step (a);(c) extracting additional information as a distortion characteristic, the distortion information extracted in step (b) being approximately represented by a plurality of basic vectors which are known and the additional information coupled to the basic vectors, wherein eigenvectors are used as the basic vectors;(d) storing the additional information in a storage unit;(e) reproducing the distortion information using the additional information stored in said storage unit and said plurality of basic vectors when an image is displayed on the screen of said display device; and(f) controlling said display device based on the distortion information reproduced in step (e) so that the distortion is canceled.