Bayermatriisi

Bayermatriisi, also known as Bayer matrix or Bayer pattern, is a technique used in digital imaging to create a color filter array (CFA) for single-sensor color image capture. It was developed by Bryce Bayer and is widely used in digital cameras and smartphones to capture color images with a single sensor. The Bayer matrix is a mosaic pattern of color filters, typically red, green, and blue, arranged in a repeating pattern over the sensor's pixels. The most common pattern is the RGGB pattern, where the green filter is placed on every other pixel, and the red and blue filters are placed on alternating pixels. This pattern is chosen because the human eye is more sensitive to green light than to red or blue light, so more green filters are used to capture more detail in the green channel. The Bayer matrix allows for the capture of color images with a single sensor, reducing the cost and complexity of the camera. However, it also introduces a form of chromatic aberration, known as the "Bayer artifact," which can be mitigated through various image processing techniques.