Method for determining offset and gain correction for a light sensitive sensor

摘要: The present invention is a method of compensating for the offset in image signals produced by an processing apparatus, and more particularly to accurately characterizing offset, gain higher order responses sensing elements enable correction thereof device or scanner. utilizes intermediate (grey) reflectance targets measure response each sensor element then, using measured responses, fits characteristic curve calculate element, including zero situation, characterize accurate level, gain, sensor. Moreover, additional may be employed so as characterization exhibiting non-linear linearly increasing light intensities.