Lossless Compression of Color Mosaic Images and Videos

Lossless compression of raw sensor data captured by a digital camera with a color filter array (CFA) is a problem in digital photography with many applications. For instance, it is desirable to preserve the original sensor data so that ultra-high quality joint spatiotemporal color demosaicking and/or superresolution reconstruction can be performed offline after the image capture. Lossless mosaic image compression is also required for archival purposes when the digital camera is used in scientific and medical fields. In this chapter we investigate the problem of lossless compression of CFA mosaic images, and present both intraframe mosaic compression techniques for still images and interframe mosaic compression technique for videos.