Patent US 5,936,741

A method and apparatus for calibrating images output from an image generating device is provided which produces calibrated output images from uncalibrated input images, for various values of controllable imaging parameters that affect image calibration, such as, image resolution, exposure intensity and screen frequency. Calibration is achieved by programmably selecting a particular calibration set from a plurality of calibration sets in order to programmably adjust uncalibrated input images for various values of the controllable imaging parameters, in order to produce calibrated output images in either positive or negative sense.