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

该程序（jpeg_quality_score）是基于matlab平台，NR中精典算法，对JPEG压缩格式的图像进行客观评价-The program (jpeg_quality_score) is based on matlab platform, NR in the classical algorithm for JPEG image compression format to conduct an objective evaluation

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.