离散余弦变换源代码(VC)- Separate cosine transformation source code (VC)

DCT变换及IDCT变换，为较为常用的变换，在许多信号处理中经常使用。-DCT ??换 ??IDCT ??换 ?????衔 ???用的 ??换 ??在许 ?嘈???

实现对一幅灰度和彩色图像作的离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换.-The realization of a piece of gray and color images for the discrete cosine transform, select the appropriate thresholds for DCT coefficients of its inverse transform DCT.