![]() These elements are referred to as sensor elements, sensels, pixel sensors, or simply pixels sample values sensed by them, after interpolation, become image pixels. The luminance perception of the human retina uses M and L cone cells combined, during daylight vision, which are most sensitive to green light. He used twice as many green elements as red or blue to mimic the physiology of the human eye. 3,971,065 ) in 1976 called the green photosensors luminance-sensitive elements and the red and blue ones chrominance-sensitive elements. as a film scan, Foveon or pixel shift image might appear)īryce Bayer's patent (U.S. Full RGB version at 120×80-pixels for comparison (e.g.Reconstructed image after interpolating missing color information. ![]() Output color-coded with Bayer filter colors.Output of a 120×80-pixel sensor with a Bayer filter.Bayer is also known for his recursively defined matrix used in ordered dithering.Īlternatives to the Bayer filter include both various modifications of colors and arrangement and completely different technologies, such as color co-site sampling, the Foveon X3 sensor, the dichroic mirrors or a transparent diffractive-filter array. It is named after its inventor, Bryce Bayer of Eastman Kodak. The filter pattern is half green, one quarter red and one quarter blue, hence is also called BGGR, RGBG, GRBG, or RGGB. Its particular arrangement of color filters is used in most single-chip digital image sensors used in digital cameras, camcorders, and scanners to create a color image. The Bayer arrangement of color filters on the pixel array of an image sensor Profile/cross-section of sensorĪ Bayer filter mosaic is a color filter array (CFA) for arranging RGB color filters on a square grid of photosensors. For the Bayer matrix used in pattern dithering (also created by Bryce Bayer), see Ordered dithering.
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