Subjective Quality Database and Objective Study of Compressed Point Clouds With 6DoF Head-Mounted Display
Subjective Quality Database and Objective Study of Compressed Point Clouds With 6DoF Head-Mounted Display
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DOI：
10.1109/tcsvt.2021.3101484
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发表时间：
2020-08
影响因子：
8.4
通讯作者：
Xinju Wu;Yun Zhang;Chunling Fan;Junhui Hou;S. Kwong
中科院分区：
文献类型：
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作者：
Xinju Wu;Yun Zhang;Chunling Fan;Junhui Hou;S. Kwong
在本文中，我们专注于主观和客观的点云质量评估（PCQA）在沉浸式环境中，研究几何和纹理属性的压缩失真的影响。使用具有六个自由度的头戴式显示器（HMD），我们建立了一个主观PCQA数据库，命名为SIAT点云质量数据库（SIAT-PCQD）。我们的数据库由340失真的点云压缩的MPEG点云编码器与20个序列和17对几何和纹理量化参数的组合。本文进一步讨论了变形的几何和纹理属性的影响。然后，我们提出了两种基于投影的客观质量评价方法，即，基于加权视图投影的模型和基于面片投影的模型。我们的主观数据库和研究结果可以用于点云处理，传输和编码，特别是虚拟现实应用。这个主观的错误http://codec.siat.ac.cn/video_download_siat-pcqd.htmlhas在公共存储库中发布了。dx.doi.org/10.21227/ad8d-7r28
In this paper, we focus on subjective and objective Point Cloud Quality Assessment (PCQA) in an immersive environment and study the effect of geometry and texture attributes in compression distortion. Using a Head-Mounted Display (HMD) with six degrees of freedom, we establish a subjective PCQA database, named SIAT Point Cloud Quality Database (SIAT-PCQD). Our database consists of 340 distorted point clouds compressed by the MPEG point cloud encoder with the combination of 20 sequences and 17 pairs of geometry and texture quantization parameters. The impact of distorted geometry and texture attributes is further discussed in this paper. Then, we propose two projection-based objective quality evaluation methods, i.e., a weighted view projection based model and a patch projection based model. Our subjective database and findings can be used in point cloud processing, transmission, and coding, especially for virtual reality applications. The subjective datasethttps://dx.doi.org/10.21227/ad8d-7r28 http://codec.siat.ac.cn/video_download_siat-pcqd.htmlhas been released in the public repository.