Lossless compression of bayer color filter array images

Most digital cameras reduce their cost, size and complexity by using a single-sensor image acquisition system to acquire a scene in digital format [1]. In such a system, an image sensor is overlaid with a color filter array (CFA), such as the Bayer pattern [2] shown in Figure 3.1a, to record one of the three primary color components at each pixel location. Consequently, a gray-scale mosaic-like image, commonly referred to as a CFA image, is produced as the sensor output.