本程序是基于频域信息处理的压缩方法，把通过DCT图像转换到频域，最后还原成压缩图像。-The program is based on frequency domain information processing of the compression method, through the DCT image into the frequency domain, and finally reduction into compressed image.

Skew detection and correction is very important task before pre-processing of an image and it is a major problem in scanned documents, if it not detected correctly it will lead wrong result in future during image analysis. During the scanning of th