Explanation of how a Bayer filter works.
A Bayer filter mosaic is a technology used in sensors for digital photography. Eastman Kodak first made the filters and patented them in the 1970s. The Bayer filter uses a grid of filters. Half of them are sensitive to green, a quarter each is sensitive to red or blue. In 2021, most image sensors used in digital cameras used a Bayer filter.
Bayer Filter Media
The Bayer arrangement of color filters on the pixel array of an image sensor
Profile/cross-section of sensor
Three images depicting the false color demosaicing artifact.
Three images depicting the zippering artifact of CFA demosaicing
Three new Kodak RGBW filter patterns
Earlier RGBW filter pattern
A filter from Fujifilm, similar to other variations of w:Bayer filter, but with oblique color rows.
The repeating 6×6 grid used in the x-trans sensor
Front page of Bryce Bayer's 1976 patent on the Bayer pattern filter mosaic, showing his terminology of luminance-sensitive and chrominance-sensitive elements