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arXiv 2207.13530cs.MMeess.IV
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一种用于低比特率视频会议的混合深度动画编解码器

A Hybrid Deep Animation Codec for Low-bitrate Video Conferencing

Goluck Konuko, Stéphane Lathuilière, Giuseppe Valenzise

摘要:

深度生成模型,特别是面部动画方案,可用于视频会议应用中,以通过稀疏的关键点集有效地压缩视频,而无需传输密集的运动矢量。虽然这些方案在低比特率下比传统视频编解码器带来显著的编码增益,但是当可用带宽增加时,它们的性能很快饱和。在本文中,我们提出了一个分层的,混合编码方案,以克服这一限制。具体地,我们通过添加由通过常规视频编解码器(例如,HEVC)。动画和辅助视频通过一个新的融合模块相结合。我们的研究结果显示,在视频会议序列的大型数据集上,一致的平均BD速率增益超过-30%,扩展了面部动画编解码器的比特率操作范围

英文摘要:

Deep generative models, and particularly facial animation schemes, can be used in video conferencing applications to efficiently compress a video through a sparse set of keypoints, without the need to transmit dense motion vectors. While these schemes bring significant coding gains over conventional video codecs at low bitrates, their performance saturates quickly when the available bandwidth increases. In this paper, we propose a layered, hybrid coding scheme to overcome this limitation. Specifically, we extend a codec based on facial animation by adding an auxiliary stream consisting of a very low bitrate version of the video, obtained through a conventional video codec (e.g., HEVC). The animated and auxiliary videos are combined through a novel fusion module. Our results show consistent average BD-Rate gains in excess of -30% on a large dataset of video conferencing sequences, extending the operational range of bitrates of a facial animation codec alone

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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