这是一个比较完整的JPEG压缩程序，支持 彩色/灰度、Y分量水平/垂直采

样律、图像质量 调整。使用的是最简单的基线系统（BaseLine）压缩方式，

量化表及Huffman表都是与ACDSee一致的，没有提供自适应Huffman表压缩功能。-This is a more complete JPEG compression process, support for color/grayscale, Y component horizontal/vertical sampling law, image quality adjustments. Using the most simple baseline system (BaseLine) compression, quantization tables and Huffman tables are consistent with ACDSee, did not provide adaptive Huffman table compression.