Patent ID: 7825957

Claim:
An image input device comprising: an optical lens; an image sensor for converting an image of a photographic subject obtained from the optical lens into an imaging signal; a color filter disposed on the image sensor; a color temperature measuring circuit for measuring a color temperature of the imaging signal read from the image sensor for each of a plurality of measurement areas into which an entire area of the image sensor is divided in n, n being a natural number; and a color temperature correction circuit for the color temperature of the imaging signal read from the image sensor for each of a plurality of correction areas into which the entire area of the image sensor is divided in m, m being a natural number, wherein: m and n satisfy a relationship of m>n, and the correction is implemented based on a the color temperature measurement result being calculated by weighted arithmetic according to a distance between the correction areas and the measurement areas with regard to the color temperature measurement result for each measurement area by the color temperature measurement circuit.