Patent ID: 9516286
Filing Date: 2016-12-06
CPC Classification: H04N

Claim Text:
1. A color correction device for an image sensor which is divided into a plurality of regions, comprising: a quantum efficiency measurement circuit generating a color signal according to a sensing signal from each of a plurality of pixels of the image sensor; an addressing circuit receiving the color signal corresponding to each pixel, obtaining a location of each pixel on the image sensor, and averaging all of the color signals corresponding to the pixels whose locations are disposed in one of the regions to obtain an average color signal; a correction circuit receiving the average color signal to obtain a color correction matrix of the one of the regions and correcting the color signals of the pixels whose locations are in the one of the regions by the color correction matrix; and a classifier circuit receiving the sensing signal corresponding to each pixel to determine a type of a light source which is illuminating the image source and generating an ideal color information signal according to a result of determining the type of the light source.