如何压缩图片较好！（不是用压缩工具，而是一种算法，最好能提供一个函数！！！）

[thb]

[aisn]

Data Decompression Library Functions
The following functions are used to decompress files.

Function Description
GetExpandedName Retrieves the original name of a compressed file.
LZClose Closes a file that was opened by using LZOpenFile.
LZCopy Copies a source file to a destination file. If the
source file is compressed with the Microsoft File
Compression Utility (Compress.exe), this function
creates a decompressed destination file.
LZInit Allocates memory for the internal data structures
required to decompress files, and then creates and
initializes them.
LZOpenFile Creates, opens, reopens, or deletes the specified file.
LZRead Reads (at most) the specified number of bytes from a
file and copies them into a buffer.
LZSeek Moves a file pointer a number of bytes from a starting
position.

[lixiongfeng]

最好的压缩图像的方法到现在为止可能就是jpg图像所采用的方法了。该图像压缩方法对于静止图像一般能达到40:1的压缩比，运动图像的压缩比能达到100:1甚至更高。
该方法采用了DCT变换，哈夫曼编码，以及其它的一些变换方法，使这些编码方法的组合应用。
另外还有一种方法，SVLC，国内较少！