Image sensor and image processing apparatus generating a color ratio of a saturation pixel group

An image sensor comprising:

• a pixel array comprising a plurality of pixel groups each comprising a plurality of pixels;
• a readout circuit configured to generate image data based on pixel signals output by the pixel array;
• and
• an image signal processor,
• wherein the image data comprises full image data obtained by summing pixel signals of all pixels of each pixel group and sub image data obtained by summing pixel signals of some pixels of each pixel group, and
• wherein the image signal processor is configured to:
• generate a color ratio of each of the plurality of pixel groups by using the sub image data;
• detect a saturation pixel group based on the full image data;
• and
• compensate for the full image data corresponding to the saturation pixel group based on the color ratio corresponding to the saturation pixel group.

An image processing device comprising:

• an interface configured to receive full pixel values from an image sensor, the full pixel values being generated based on pixel signals of all pixels in each of a plurality of pixel groups of the image sensor;
• and
• a processor configured to:
• detect a saturation pixel group based on the full pixel values;
• generate a color ratio of the saturation pixel group based on a target sub pixel value generated based on the pixel signals of some pixels in the saturation pixel group;
• and
• compensate for a full pixel value of the saturation pixel group based on the color ratio.