Design and research on the JPEG-LS image compression algorithm

With the increasing of imaging sensor resolution, the captured images are becoming larger and larger, which requires higher image compression ratio. This paper analyzes some key points of this standard including nonlinear prediction, golomb coding and Run-Length coding, and discusses the performance in lossless compression of JPEG-LS. The comparison of this standard with other algorithms is also given. While discussing the hardware implementation based on FPGA, this paper presents the cache settings for reading and writing and timing control for the whole hardware design. The analysis shows that JPEG-LS lossless compression algorithm has a certain advantage in the imaging field.