【作者】 王国强； 邵峰晶； 孙仁诚；

【Author】 WANG Guoqiang SHAO Fengjing SUN Rencheng(College of Information Engineering,Qingdao University,Qingdao,266071)

【机构】 青岛大学信息工程学院；

【摘要】 AVS1-P7是我国具有自主知识产权的第二代信源编码标准 AVS 系列标准中的第七部分,采用基于块的混合编码方法,同多种基于块的视频编码标准相似,AVS1-P7解码图像也会出现块效应。为消除块效应获得高质量的解码图像,加速解码过程,支持国有标准发展,本文提出了一种符合 AVS1-P7标准的环路滤波器结构,该结构通过增加片内存储器减少了对系统数据总线带宽的占用,将相邻数据块分开存储实现了可并行访问垂直或水平滤波边界两边的数据,加之有两个可配置的行列转换阵列,提高了数据的利用率,加快了环路滤波的处理速度。仿真结果显示了设计的可行性。更多还原

【Abstract】 AVSI-P7 is the seventh part of the second generation source coding standard AVS which is a national audio and video standard.AVSI-P7 adopts hybrid coding,whose decoded image may have block artifacts as some video coding standard based block.In order to reduce block artifacts and get high-quality decoded image,accelerate the decoding process and support the development of the national standard,in this paper an AVSI-P7 loop filter architecture is presented,which reduces the requirement for data bandwidth on system data bus by adding RAM in the loop filter,realizes the parallel access of the data of both sides of horizontal and vertical filtering boundary,enhances the data usage and accelerates the loop filter processing by storing the neighboring data in different SRAM and the use of two configurable matrix transposers.The simulation result shows that the design is feasible.更多还原