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首页> 外文会议>2012 International Conference on Wireless Communications amp; Signal Processing >Spatial correlation and texture-based fast Adaptive Loop Filter for HEVC
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Spatial correlation and texture-based fast Adaptive Loop Filter for HEVC

机译：HEVC空间相关性和基于纹理的快速自适应环路滤波器

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摘要

Many techniques have been developed to improve the coding performance of the emerging next generation High Efficient Video Coding (HEVC) standard. Among these techniques, Adaptive Loop Filter (ALF) is proposed and effectively enhances the coding efficiency, which is however at the cost of much higher computational complexity, thus increases the difficulty of practical real-time video encoding. Therefore, we address this problem and propose a fast algorithm of adaptive loop filter. We pre-judge the filter design mode for every largest coding unit (LCU) based on the spatial correlation and texture information of video content. By skipping some unnecessary mode, the time complexity of adaptive loop filter can be significantly reduced. The experimental results show that the proposed fast ALF algorithm can save on average 71.7% of the time for the adaptive loop filter in comparison with the original algorithm with only negligible video quality degradation.
机译：已经开发了许多技术来改善新兴的下一代高效视频编码（HEVC）标准的编码性能。在这些技术中，提出了自适应环路滤波器（ALF）并有效地提高了编码效率，但这是以更高的计算复杂度为代价的，因此增加了实际实时视频编码的难度。因此，我们解决了这个问题并提出了一种自适应环路滤波器的快速算法。我们根据视频内容的空间相关性和纹理信息，预先判断每个最大编码单元（LCU）的滤波器设计模式。通过跳过一些不必要的模式，可以显着降低自适应环路滤波器的时间复杂度。实验结果表明，与原始算法相比，提出的快速ALF算法与传统算法相比，平均视频质量下降幅度很小，可节省71.7％的时间。

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