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Fast Inter-mode Decision for HEVC Based on Temporally Correlation
Author(s): 
Pages: 1-6
Year: Issue:  13
Journal: Video Engineering

Keyword:  high efficiency video coding(HEVC)coding unit (CU)prediction unit (PU)mode decision;
Abstract: 高效率视频编码(HEVC)相比目前的国际视频编码标准H.264/AVC,在压缩率方面有了较大的提高,但也带来了巨大的编码计算复杂度.为了降低HEVC的编码计算复杂度,提出了一种快速HEVC帧间模式判决方法.统计并分析了相邻两帧之间对应块的编码单元(CU)和预测单元(PU)的时域相关性,在此相关性基础上,跳过了一些冗余CU分割层和PU预测模式,CU层最多只取两种PU预测模式,从而大大减少了所需要进行的率失真代价计算的数量.实验结果显示,与HM7.0相比,该方法在仅损失了0.21%~1.66%的压缩率和0.01~0.09 dB的峰值信噪比的前提下,降低了52.3%~63.5%的编码时间.
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