支持向量机的MATLAB源程序，效果真的很不错,SVM MATLAB source, the effect is really very good

n×n子块的DTC图像变换及频谱特点。 熟悉JPEG基本系统的图像编解码方法。-n × n sub-block of the DTC and the spectrum characteristics of the image transformation. Familiar with the basic system of JPEG image codec method.