基于DSP平台的AVS自适应环路滤波的研究与实现

Research and Implementation of Adaptive AVS Decoder Based on DSP Platform

简要介绍了AVS解码器的解码流程，从改进传统环路滤波入手，提出了一种自适应环路滤波算法。通过判断当前帧的解码时间是否超过阈值T，来确定当前帧采用传统环路滤波还是采用简化环路滤波，从而实现了一种基于DSP平台的自适应环路滤波AVS解码器。实验结果表明，在图像精度损失不多于0.5%的条件下，自适应环路滤波比传统环路滤波时间节省了15%-30%。

The algorithm of AVS decoder is briefly introduced, and after improving the convention loop filter method, a adaptive loop filter（ALP） method is presented. According to the time cost of decoding the current frame, the different loop filter methods are chosen in decoder. The experimental results show the time cost of ALP reduce more than 15% compared with the convention loop filter method on DSP platform.