里面要求实现基于DCT变换的图片压缩程序，基本上复制以后就可以直接运行。值得一提的是，我里面直接调用了三个个外部的包，如果用eclipse编译器或者其他的话，需要在偏好设置中自行设置，否则会报错。具体设置可以自行百度，很简单的(It requires the implementation of image compression program based on DCT transform. After copying, it can run directly. It is worth mentioning that I directly call three external.Com packages, if I use eclipse compiler or other words, I need to set my preferences in my preferences settings, otherwise I will report errors. Specific settings can be self - Baidu, very simple)