MC JPEG图像编码中用的二维DCT The source data (8x8) is transformed to a linear combination of these 64 frequency squares. 在JPEG标准中, 8x8的图像块被表 示为右图64种图 像块的线性组合 http://en.wikipedia.org/wiki/Discrete_cosine_transform{ynh,cxh}@ustc.edu.cn JPEG图像编码中用的二维DCT 8 The source data (8x8) is transformed to a linear combination of these 64 frequency squares. 在JPEG标准中, 8x8 的图像块被表 示为右图64种图 像块的线性组合 http://en.wikipedia.org/wiki/Discrete_cosine_transform