Image processing apparatus and image processing method

Abstract

Both a high signal-to-noise ratio and wide dynamic range of the output video signal of a one-CCD color television camera are realized. An image signal processing apparatus of an imaging device using a solid-state image sensor in which different color filters are arranged includes an amplifying unit which amplifies color signals from the solid-state image sensor with a predetermined amplification factor, a separating unit which separates the color signals amplified by the amplifying unit into individual color signals, a white balance adjusting unit which subjects the separated color signals to white balance adjustment, a level detecting unit which detects a saturation level from the color signals subjected to the white balance adjustment depending on the amplification factor of the amplifying unit, a correction signal generating unit which generates correction signals from the other color signals than the color signal from which the saturation level is detected by the level detecting unit, and a first adding unit which adds the correction signals to the color signals subjected to the white balance adjustment.