New Domain Decomposition Method For Quality-Aware Parallel H.264 Video Coding

Malaysian Journal of Computer Science

Ali Kattan¹  Rosni Abdullah¹  Mohammed Faiz Aboalmaaly¹ 

关键词: Video bit rate;    video compression efficiency;    speed-up;    OpenMP;    2D domain decomposition method;    parallel scalability;    parallel impact;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: University of Malaya * Faculty of Computer Science and Information Technology

【 摘 要 】

In this paper, we present a new parallel granularity called “tiling�? to parallelize the H.264 codec. The new parallelgranularity, which has the same granularity level as the parallel slice-level H.264 codec, is based on decomposing theentire video frame into tiles by utilizing a new inherently parallel 2D domain decomposition method. To assess theproposed approach, its parallel scalability, bit rate, and parallel impact on visual quality (peak signal-to-noise ratio)are compared with those of other approaches. Empirical results show significant improvements in encoding time ascompared to the serial and the parallel slice-level approaches. In terms of peak signal-to-noise ratio and bit rate,certain results improved, a few were comparable, while a few were discouraging, when compared to the results of theother approaches. However, addressing the limitations of the proposed method is highlighted as future work.

【 授权许可】

Unknown