Study of 3D Video Compression Using Nonlinear Depth Representation
Study of 3D Video Compression Using Nonlinear Depth Representation
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DOI：
10.1109/access.2019.2903087
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
O. Stankiewicz;K. Wegner;M. Domański
中科院分区：
文献类型：
--
作者：
O. Stankiewicz;K. Wegner;M. Domański
用于多视图视频加深度的高级视频译码（AVC）和高效视频译码（HEVC）的扩展允许3D视频场景的译码。在这些扩展的标准化期间，证明了压缩性能通常可以通过在压缩之前应用非线性深度变换以及在解压缩之后应用相应的后向非线性深度变换来提高。这种方法被称为非线性深度表示（NDR）的压缩。在本文中，提供了一个调查的NDR技术，但这个调查的很大一部分包括尚未发表的结果。首先，讨论了NDR概念背后的动机和基本原理。选择非线性变换的选项提供了各自的配方。此外，沿着讨论ISO/IEC和ITU内的具有NDR的3D视频译码的标准化，以及展示与3D-AVC和3D-HEVC中的NDR的应用相关的益处的实验结果。此外，实验比较提供了使用AVC和HEVC技术的多视点加深度视频的联播编码与和没有NDR。对于使用当前版本的通用视频编码技术的联播编码也提供了类似的实验结果，该技术正在为即将推出的ISO/IEC（MPEG-I）和ITU标准开发。所有实验结果都是在3D视频编码的常见测试条件下针对标准JVC-3V视频测试序列获得的。
The extensions of Advanced Video Coding (AVC) and High-Efficiency Video Coding (HEVC) for multiview video plus depth allow for the coding of 3D video scenes. During the standardization of these extensions, it was demonstrated that compression performance can often be improved by the application of nonlinear depth transformation prior to the compression and applying the respective backward nonlinear depth transformation after decompression. Such an approach is referred to as the compression of nonlinear depth representation (NDR). In this paper, a survey of the NDR technology is provided, but a large part of this survey comprises yet unpublished results. First, the motivation and rationale behind the idea of NDR are discussed. The options for the choice of nonlinear transformation are provided with the respective formulations. Also, the standardization of 3D video coding with NDR within ISO/IEC and ITU is discussed along with the experimental results that demonstrate benefits related to the application of NDR in 3D-AVC and 3D-HEVC. Furthermore, the experimental comparisons are provided for simulcast coding of multiview plus depth video using AVC and HEVC technology with and without the NDR. The similar experimental results are also provided for simulcast coding using the current version of Versatile Video Coding technology that is under development for the forthcoming standard of ISO/IEC (MPEG-I) and ITU. All of the experimental results have been obtained for the standard JVC-3V video test sequences under common test conditions for 3D video coding.