出版社：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 parallel granularity, which has the same granularity level as the parallel slicelevel H.264 codec, is based on decomposing the entire video frame into tiles by utilizing a new inherently parallel 2D domain decomposition method. To assess the proposed approach, its parallel scalability, bit rate, and parallel impact on visual quality (peak signaltonoise ratio) are compared with those of other approaches. Empirical results show significant improvements in encoding time as compared to the serial and the parallel slicelevel approaches. In terms of peak signaltonoise ratio and bit rate, certain results improved, a few were comparable, while a few were discouraging, when compared to the results of the other approaches. However, addressing the limitations of the proposed method is highlighted as future work.
关键词：Video bit rate; video compression efficiency; speedup; OpenMP; 2D domain decomposition method; parallel scalability; parallel impact
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