Novel Inter-Mode Decision Algorithm Based on Macroblock (MB) Tracking for the P-Slice in H.264/AVC Video Coding
Novel Inter-Mode Decision Algorithm Based on Macroblock (MB) Tracking for the P-Slice in H.264/AVC Video Coding
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DOI：
10.1109/tcsvt.2008.918121
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发表时间：
2008-02
影响因子：
8.4
通讯作者：
Byung-Gyu Kim
中科院分区：
文献类型：
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作者：
Byung-Gyu Kim
我们提出了基于H.264/AVC视频标准的P-SICERS的时间相关性的快速宏观块（MB）模式预测和决策算法。内部模式预测中有9个4Times4和8times8模式，在模式预测中有4个16次模式，包括速度 - 持续性（R-D）优化的最佳编码增益，包括跳过模式在内的8个块类型。该方案在编码过程中产生详尽的计算（搜索）。为了克服这个问题，建议使用MB跟踪方案进行快速模式决策的阈值方法，以找到最相关的块和该块的R-D成本，以进行早期模式的确定。首先通过统计分析提出了模式间候选方法。然后，使用最相关的MB的R-D成本来应用自适应模式搜索算法。通过比较分析，以可忽略的位增量和最小的图像质量损失来验证高达70.83％的加速因子。
We propose a fast macroblock (MB) mode prediction and decision algorithm based on temporal correlation for P-slices in the H.264/AVC video standard. There are nine 4times4 and 8times8 modes, and four 16 times 16 modes in the intra-mode prediction and 8 block types including SKIP mode exist for the best coding gain based on rate-distortion (R-D) optimization. This scheme gives rise to exhaustive computations (search) in the coding procedure. To overcome this problem, a thresholding method for fast inter-mode decision using an MB tracking scheme to find the most correlated block and the R-D cost of that block, are suggested for early inter-mode determination. An inter-mode candidate selection method is first suggested through the statistical analysis. Then, an adaptive inter-mode search algorithm is applied by using the R-D cost of the most correlated MB. Through comparative analysis, a speed-up factor of up to 70.83 % was verified with a negligible bit increment and a minimal loss of image quality.