自己写的jpeg的压缩，自己写的DCT以及IDCT,没有采用huffman编码，因为太难了，采用的是游程编码，可以直接运行，压缩比达到要求。内付文档详细说明代码。-Write your own jpeg compression, and write their own DCT and IDCT, did not use huffman coding, because too difficult, using run-length encoding, you can directly run th