A Bayer pattern is a pattern used by digital image sensors to represent color information. This pattern consists of a color filter array (CFA), typically a red (R), green (G), or blue (B) filter.

The Bayer pattern captures partial color information by applying a color filter to each pixel of the image sensor. This arrangement of filters typically consists of a 2x2 pattern, with one filter applied to each pixel location: red, green, or blue.

Capturing an image using a Bayer pattern only partially causes color information to exist, and later restores color information using image processing algorithms. To this end, techniques such as interpolation and color demosaicking are used using information from surrounding pixels.

The Bayer pattern is a color filter pattern commonly used in many digital cameras and image sensors. This allows you to effectively capture color information from digital images and apply various color image processing techniques to achieve natural color representation.