Apparatus and method for processing signals of an imaging device

摘要

An apparatus and method for processing signals of an imaging device comprising a detection circuit for detecting the color temperature of a light source for illuminating an object of which the image is picked up and a circuit for varying gamma correction characteristics for chrominance signals, whereby the gamma correction characteristics are changed to reduce the gains for low level regions of input signals to gamma correction circuits in accordance with the color temperature, thereby enabling the final quantize noise to be reduced.