分块有损压缩图像忽略了块间相关性，重构时会产生块效应，该文提出一种空域自适应去块效应算法。对块边缘采用方向自适应 有理滤波，以弱化块效应。根据块的内部活动性将图像块分成平坦块和纹理块2 类，利用基于方差的空域检测方法检测出平坦块，并对平 坦块进行邻块边缘自适应平滑。实验结果表明，该算法有效去除了块效应，一定程度上提高了信噪比，算法简单且鲁棒性较好。-Block lossy compression image ignores the inter-block correlation, Rec

With the widespread use of technologies like digital television, internet streaming video and DVD video, video compression has become an inevitable component of broadcast and entertainment media. Currently, the video codec that achieves the h

该部分代码主要实现了全变差模型去除JPEG压缩带来的块效应(This part of the code mainly implements the total variation model to remove the block effect caused by JPEG compression.)