摘要
去块滤波器是视频编码的重要部分,它能显著提高恢复视频的主观和客观质量。文中分析了解码图像中块效应产生的原因;归纳了去块滤波器的种类,创造性地将环路滤波器分为"加残差前滤波器"和"加残差后滤波器"两类,并分析了各类去块滤波器的工作原理;研究了现存的各种视频编码标准中去块滤波器的特点,并通过仿真实验分析了各去块滤波器的性能,为设计更加智能化、简单化的去块滤波器奠定基础。
Deblocking filters play an important role in video coding, and it can significantly improve both subjective and objective quality of the reconstructed frames. This article first discusses the causes for production of blocking effects, then summarizes the category of deblocking filters and analyzes the principles of various deblocking filters. Finally, it studies features of the deblocking filters in each video coding standard and analyzes their individual performances by experimental simulation. All of these lays a foundation for designing even more intelligent and easier deblocking filters.
出处
《通信技术》
2008年第9期201-203,共3页
Communications Technology
关键词
视频编码
视频压缩
环路滤波
去块滤波器
块效应
video coding
video compressing
in-loop filter
deblocking filter
blocking effect
