Patent ID: 8847922

Claim:
A matte/chroma key video calibration system wherein a touch input device is calibrated with fiducial marks with respect to a camera and a composite image on a matte/chroma key screen, and wherein the matte/chroma key screen area is saturated with infrared light, the infrared light wavelength being a keying color, and wherein the matching of calibration factors comprises: storing calibration factor templates for selected touch system virtual images in a calibration library look-up table, initiating automatic calibration sequence by a change in camera settings, pre-stored script, robotic or operator command, illuminating a fiducial perimeter of the touch system active area by a synchronized pulsed light emission of four laser sources for a time duration of less than one frame exposure time long, selecting one image frame from the stored calibration factor templates containing a laser flash fiducial image of the touch system active area perimeter, subjecting the fiducial image to recognition software analysis to derive the position of the illuminated fiducial perimeter of the touch system active area, retrieving appropriate calibration factor templates from memory, comparing calibration factor templates to the size and position of the touch system active area fiducial image, selecting and loading the calibration factor template that matches the fiducial image, and completing the calibration.