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Mode decision acceleration for scalable video coding through coded block pattern

机译:通过编码块模式进行可伸缩视频编码的模式决策加速

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摘要

This paper presents a fast mode decision to accelerate the encoding process of scalable video coding (SVC) through coded block pattern (CBP) analysis. CBP contains residual information of each macroblock (MB) and provide cues for mode prediction in encoding process. The proposed algorithm makes use of the existing mode information in base layer (BL), enhancement layer (EL) and CBP to remove invalid modes for the mode prediction of the current MB in EL coding. Also, the EL's modes in the highest temporal level of a group of picture are determined by high correlation exists in adjacent frames. Experimental results show that the proposed algorithm saves an average of 68% of EL motion estimation time with minor degradation in PSNR and with few bitrate increase of SVC quality and spatial scalabilities when compared to JSVM 9.19.14. Our algorithm outperforms the best-known method by 17% EL motion estimation time saving in average.
机译:本文提出了一种快速模式决策,可通过编码块模式(CBP)分析来加速可伸缩视频编码(SVC)的编码过程。 CBP包含每个宏块(MB)的残差信息,并为编码过程中的模式预测提供提示。所提出的算法利用基础层(BL),增强层(EL)和CBP中的现有模式信息来去除无效模式,以用于在EL编码中当前MB的模式预测。而且,一组图像的最高时间水平中的EL模式由相邻帧中存在的高相关性确定。实验结果表明,与JSVM 9.19.14相比,该算法平均节省了68%的EL运动估计时间,PSNR的下降幅度很小,SVC质量和空间可扩展性的比特率提高却很少。我们的算法通过平均节省17%的EL运动估计时间,胜过了最著名的方法。

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