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Exploiting inter-layer correlations in scalable HEVC for the support of screen content videos

机译:利用可扩展HEVC中的层间关联来支持屏幕内容视频

摘要

In this paper, we propose a scalable video coding (SVC) scheme for efficient coding of screen content videos while still providing the backward compatibility of HEVC (High Efficiency Video Coding). By this means, the base layer is encoded as an HEVC-compatible bitstream while the enhancement layer is encoded with the proposed screen content coding (SCC) techniques for the support of screen content videos. For the enhancement layer, Base Colors plus Escape Colors (BCEC) approach is used in which a textual block is represented by base colors, escape colors and an index map. To further enhance the coding efficiency of enhancement layer, inter-layer intra prediction for BCEC is introduced by using index map differential coding and index map reuse techniques. Experimental results show that the proposed algorithm can achieve 8.0% bitrate reduction in average and up to 18.9% bitrate reduction for screen content video as compared with the conventional scalable HEVC.
机译:在本文中,我们提出了一种可伸缩视频编码(SVC)方案,用于对屏幕内容视频进行有效编码,同时仍提供HEVC(高效视频编码)的向后兼容性。通过这种方式,基础层被编码为与HEVC兼容的比特流,而增强层则通过提出的屏幕内容编码(SCC)技术进行编码,以支持屏幕内容视频。对于增强层,使用“基色加转义颜色(BCEC)”方法,其中文本块由基色,转义颜色和索引图表示。为了进一步提高增强层的编码效率,通过使用索引图差分编码和索引图重用技术引入了BCEC的层间帧内预测。实验结果表明,与传统的可扩展HEVC相比,该算法平均可以将屏幕内容视频的比特率降低8.0%,将屏幕内容视频的比特率降低18.9%。

著录项

  • 作者

    Tsang SH; Chan YL; Siu WC;

  • 作者单位
  • 年度 2014
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

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