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arXiv 2101.06341eess.IV
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使用深度神经网络的视频压缩系统的进展:综述和案例研究

Advances In Video Compression System Using Deep Neural Network: A Review And Case Studies

Dandan Ding, Zhan Ma, Di Chen, Qingshuang Chen, Zoe Liu, Fengqing Zhu

摘要:

在过去的几十年里,视频压缩系统已经取得了重大进展,以满足互联网规模的视频流量几乎呈指数级增长。从应用的角度来看,我们已经确定了三个主要的功能块,包括预处理,编码和后处理,已被不断研究,以最大限度地提高最终用户的体验质量(QoE)在有限的比特率预算。最近,人工智能(AI)驱动的技术已经显示出进一步提高上述功能块单独和联合效率的巨大潜力。在这篇文章中,我们广泛回顾了视频压缩系统的最新技术进展,重点是基于深度神经网络(DNN)的方法;然后介绍了三个全面的案例研究。在预处理方面,我们展示了一个基于可切换纹理的视频编码示例,该示例利用基于DNN的场景理解来提取语义区域,以改进后续的视频编码器。在编码方面,我们提出了一个端到端的神经视频编码框架,该框架利用堆叠的DNN通过完全数据驱动的学习来有效地对输入的原始视频进行压缩编码。在后处理方面,我们展示了两个神经自适应滤波器,分别用于增强压缩帧的环路内滤波和后滤波。最后,可在https://purdueviper.github.io/dnn-coding/上公开访问一个配套网站,其中载有这项工作中开发的内容。

英文摘要:

Significant advances in video compression system have been made in the past several decades to satisfy the nearly exponential growth of Internet-scale video traffic. From the application perspective, we have identified three major functional blocks including pre-processing, coding, and post-processing, that have been continuously investigated to maximize the end-user quality of experience (QoE) under a limited bit rate budget. Recently, artificial intelligence (AI) powered techniques have shown great potential to further increase the efficiency of the aforementioned functional blocks, both individually and jointly. In this article, we review extensively recent technical advances in video compression system, with an emphasis on deep neural network (DNN)-based approaches; and then present three comprehensive case studies. On pre-processing, we show a switchable texture-based video coding example that leverages DNN-based scene understanding to extract semantic areas for the improvement of subsequent video coder. On coding, we present an end-to-end neural video coding framework that takes advantage of the stacked DNNs to efficiently and compactly code input raw videos via fully data-driven learning. On post-processing, we demonstrate two neural adaptive filters to respectively facilitate the in-loop and post filtering for the enhancement of compressed frames. Finally, a companion website hosting the contents developed in this work can be accessed publicly at https://purdueviper.github.io/dnn-coding/.

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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