利用MFC绘制正弦波，绘制离散序列并求其卷积，和DFT变化-MFC draw sine wave, to draw discrete sequence and find the convolution and DFT changes

Image Compression A collection of simple routines for image compression using different techniques. BTCODE: Image compression Using Block Truncation Coding. PYRAMID: Image compression based on Gaussian Pyramids. DCTCOMPR: