AV1视频标准中Loop Restoration滤波研究  

The research on Loop Restoration filter in AV1 video standard

作　　者：罗瑜[1] LUO Yu(Basic College,Shaanxi University of Chinese Medicine,Xianyang 712046,China)

机构地区：[1]陕西中医药大学基础学院,陕西咸阳712046

出　　处：《电子设计工程》2021年第6期79-82,87,共5页Electronic Design Engineering

基　　金：国家高技术研究发展计划(863计划)(2015M16903);咸阳市科技项目(2018KT-20)。

摘　　要：AV1是国际上最新的视频编解码标准,该标准主要应用于8K码流,有着较高的压缩效率,可有效地降低视频传输带宽。基于指导编解码芯片研究的目的,文中通过阐述AV1的解码流程、Loop Restoration滤波器的处理流程和物理意义,分析对比不同ASIC实现方式的资源消耗,仅用加法和移位操作得到了Loop Restoration滤波器的最优ASIC实现。该研究对AV1的ASIC解码芯片的实现有较高的指导意义,有较高的工程应用价值和商业价值。AV1 is the latest video codec standard in the world,which is mainly applied to 8K code stream with high compression efficiency and can effectively reduce the video transmission bandwidth.Based on the purpose of guiding the codec chip research,this paper analyzes and compares the resource consumption of different ASIC implementation methods by illustrating the decoding process of AV1,the processing process and physical significance of Loop Restoration filter,and proposes the optimal ASIC implementation of Loop Restoration filter.This research is of great significance to the implementation of AV1 ASIC decoding chip and has high engineering application value and commercial value.

关 键 词：编解码 Loop Restoration AV1 H.265 

分 类 号：TN919.81[电子电信—通信与信息系统]