一种适用于AVS自适应环路滤波器的VLSI实现

A VLSI implementation of adaptive loopfilter for AVS

提出了一种新的适用于AVS自适应环路滤波器的VLSI实现。在实现时,采用了垂直滤波和水平滤波交叉进行的顺序,使得中间数据存储单元只需要存储两个8×8的块而不是整个宏块的数据,并且通过有效的控制机制,完成对一个宏块数据进行环路滤波仅需316个时钟周期,可以达到高清实时解码的要求。

This paper proposes a new VLSI implementation of adaptive loopfilter for AVS video coding standard. In this implementation, the order of the filter is improved , thus the intermediate data storage is reduced to only two 8 × 8 blocks instead of the whole 16 × 16 nlacroblock. Through the effective control scheme, it costs only 316 clocks to implement loopfilter over a whole macroblock, thus the design can meet the demand of the real- time video decoding of high definition.