Method and apparatus for producing a warped image from an input image. Image warp data encoded as an image on a card is read by a data reader in a camera. Each element of the warp map maps a corresponding region in an input image to a pixel location of the output image. The warp map is scaled to the...http://www.google.de/patents/US6636216?utm_source=gb-gplus-sharePatent US6636216 - Digital image warping system
