Chen, Wu, Jiang, Qiuping, Zhou, Wei, Shao, Feng, Zhai, Guangtao and Lin, Weisi
2025.
No-reference point cloud quality assessment via graph convolutional network.
IEEE Transactions on Multimedia
27
, pp. 2489-2502.
10.1109/TMM.2024.3521845
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Abstract
TThree-dimensional (3D) point cloud, as an emerging visual media format, is increasingly favored by consumers as it can provide more realistic visual information than two-dimensional (2D) data. Similar to 2D plane images and videos, point clouds inevitably suffer from quality degradation and information loss through multimedia communication systems. Therefore, automatic point cloud quality assessment (PCQA) is of critical importance. In this work, we propose a novel no-reference PCQA method by using a graph convolutional network (GCN) to characterize the mutual dependencies of multi-view 2D projected image contents. The proposed GCN-based PCQA (GC-PCQA) method contains three modules, i.e., multi-view projection, graph construction, and GCN-based quality prediction. First, multi-view projection is performed on the test point cloud to obtain a set of horizontally and vertically projected images. Then, a perception-consistent graph is constructed based on the spatial relations among different projected images. Finally, reasoning on the constructed graph is performed by GCN to characterize the mutual dependencies and interactions between different projected images, and aggregate feature information of multi-view projected images for final quality prediction. Experimental results on two publicly available benchmark databases show that our proposed GC-PCQA can achieve superior performance than state-of-the-art quality assessment metrics.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Computer Science & Informatics |
| Publisher: | Institute of Electrical and Electronics Engineers |
| ISSN: | 1520-9210 |
| Date of First Compliant Deposit: | 15 October 2024 |
| Date of Acceptance: | 10 September 2024 |
| Last Modified: | 12 Jun 2025 13:45 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/172907 |
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