Mapping Capacitive Coupling Among Pixels in a Sensor Array

An improved method of mapping the capacitive contribution to cross-talk among pixels in an imaging array of sensors (typically, an imaging photodetector array) has been devised for use in calibrating and/or characterizing such an array. The method is applicable to almost all image detectors in modern electronic cameras for diverse applications, ranging from consumer cellular-telephone cameras at one extreme to high-performance imaging scientific instruments at the other extreme. In comparison with prior methods of quantifying the capacitive coupling among pixels, this method is a more efficient means of obtaining detailed information pertaining to all the pixels. Unlike the prior methods, this method does not require flat-field illumination of the array: indeed, the method does not require any illumination.