HEVC去方块滤波中滤波边界的确定与实现  

Determination and implementation of filtering boundary for deblocking filter in HEVC

作　　者：蒋林[1] 杨倩[2] 邓军勇[1] 郭佳乐[1] 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121 [2]西安邮电大学计算机学院,陕西西安710121

出　　处：《西安邮电大学学报》2016年第3期99-104,共6页Journal of Xi’an University of Posts and Telecommunications

基　　金：国家自然科学基金资助项目(61272120);陕西省自然科学基金资助项目(2015JM6326)

摘　　要：针对HEVC中去方块滤波的边界确定问题,提出一种并行确定方法。该方法通过从每个8×8像素块提取出Depth、TransformIdx和PartMode等3个参数索引信息,给出去方块滤波边界的确定条件;基于动态可编程可重构体系结构,使用3个处理元来并行确定滤波边界。实验结果表明,该方法判断变换单元和预测单元边界的加速比是1个处理元的1.56倍,频率可达155.966MHz,有效降低了执行时间,提高视频编码效率。A parallel method is proposed to determine the boundaries of deblocking filter in HEVC.This method extracts the information such as Depth,TransformIdx and PartMode from each 8×8 block to provide the decision condition of the boundaries for deblocking filter.Based on the dynamical,programmable and reconfigurable architecture,this method uses three processing elements to determine the filter boundaries.Experiment results show that compared with the way by using a single PE,this method can increase the speedup of judging PU and TU boundaries about 1.56 times,and the frequency can reach up to 155.966 MHz according to FPGA testing.All these can effectively reduce the execution time and improve the efficiency of video coding.

关 键 词：高效视频编码 去方块滤波 边界确定 

分 类 号：TN919.81[电子电信—通信与信息系统]