A method of color-correcting a projected image is disclosed, including providing image data for a desired image, projecting the desired image onto a surface to produce a reflected image, comparing the reflected image to the image data to determine an observed difference, and modifying the projected image...http://www.google.ca/patents/US20040140981?utm_source=gb-gplus-sharePatent US20040140981 - Correction of a projected image based on a reflected image
