Patent ID: 7763836

Claim:
A method of calibrating an image display system comprising one or more projectors oriented to project an image on a projection screen and one or more image sensors oriented to acquire an image projected on the projection screen, the method comprising: operating the projector to project a calibration image comprising one or more image fiducials on the image projection screen; operating the image sensor to acquire the projected calibration image including the image fiducials as projected on the projection screen; identifying the respective positions of the image fiducials as projected on the projection screen; validating the identified fiducial positions by applying a parametric model to compare respective ones of the identified fiducial positions with corresponding approximations of the identified fiducial positions; certifying validation errors and generating corrected fiducial positions when a result of one of the comparisons exceeds an error threshold; generating geometric calibration data for the projector using validated fiducial positions and corrected fiducial positions in place of fiducial positions for which errors are certified; and utilizing the geometric calibration data to operate the projector in a calibrated projection mode.