SCALABLE COMPRESSION USING JPEG-LS

摘要

A global bit stream comprising at least a first and a second bit stream is generated using an original visual bit stream. The first bit stream is generated by compressing the original visual bit stream using a JPEG-LS compression technique with a lossy factor 'n'. The second bit stream is generated by compressing a difference bit stream using a JPEG-LS lossless compression technique, wherein the difference bit stream comprises a difference between the original visual bit stream and the first bit stream. The visual display is recreated using a reconstructed bit stream after receiving the global bit stream over a channel, wherein the reconstructed bit stream is generated by decompressing at least the first bit stream using a JPEG-LS lossless compression technique. The second bit stream is decompressed using JPEG-LS lossless compression technique and the quality of the display may be enhanced by adding the decompressed second bit stream.