HEVC中滤波算法研究与优化

在视频编码过程中，为了消除图像的块效应，视频编码标准H．264中采用了去块效应滤波算法．但是没有考虑到原始图像和重建图像之间的相关性，在HEVC中提出了基于块与四叉树的环路滤波算法。该算法用于去块效应滤波。文章提出一种最优对称性的快速自适应环路滤波算法，保证重建图像质量的同时，减少编码时间。

HEVC the filtering algorithm and optimization

In the video encoding process, to eliminate the effect of the image block, H.264 video coding standard used in the deblocking filter algorithm, but did not take into account correlation between the original image and the reconstructed image. In HEVC proposes a block-based and quad tree loop filtering algorithm, the algorithm used to deblocking filter. This article presents a fast adaptive loop optimal symmetry filtering algorithm. At the same time to ensure the quality of the reconstructed image reduce coding time.