A rear projection imaging system with an image warping distortion
correction system using a camera and processing unit to generate a
warping map that corrects for image distortion. The warping map is
generated in an iterative process by displaying a known pattern on a
viewing screen and, through the use of a camera, having a microprocessor
determine the location and shape of the pattern on the screen. The
microprocessor then compares the displayed image to the original
reference image, calculates the distortion effects present in the
projection optics, and generates a warping map.