It shows what a jpeg compression is all about. the function implements the DCT transform, using a matrix operator. note that matlab has a function for the DCT and iDCT transforms that might be more efficient. -It shows what a jpeg compres

用matlab实现MPEG压缩编码，对图像编码率失真性能进行分析，比较不同类型静态图像编码效率。 -Using Matlab to achieve MPEG compression coding, image coding rate distortion performance analysis, compare the different types of static image coding efficiency.