Abstract
For the processing of point clouds, an accurate assessment of the quality is essential. However, point cloud quality assessment has proven to be a difficult issue, especially when the pristine point clouds are unavailable. Most existing no-reference point cloud quality assessment methods adopt projection-based routes, which inevitably suffer from occlusion and misalignment, resulting in loss of information. Alternatively, this paper proposes a novel no-reference point cloud quality assessment method via a contextual point-wise deep learning network (CPW-Net). Compared with projection-based methods, it reduces information loss by learning features directly from point coordinates and attributes. In particular, CPW-Net utilizes an Offset Attention Feature Encoder (OAFE) module to extract local and contextual features. Experiment results demonstrate that the proposed method overwhelms most publicly available no-reference metrics on SJTU dataset and gains compatible performance in comparison with most full-reference methods.
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Acknowledgment
This work was sponsored by the Bei**g Natural Science Foundation (No. 4232020), Scientific and Technological Innovation 2030 - “New Generation Artificial Intelligence” Major Project (No. 2022ZD0119502), the National Natural Science Foundation of China (No. 62201017, No.62201018, No.62076012). The authors would like to thank the anonymous reviewers who put in efforts to help improve this paper.
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Wang, X., Liu, R., Wang, X. (2024). No-Reference Point Cloud Quality Assessment via Contextual Point-Wise Deep Learning Network. In: Sun, F., Meng, Q., Fu, Z., Fang, B. (eds) Cognitive Systems and Information Processing. ICCSIP 2023. Communications in Computer and Information Science, vol 1919. Springer, Singapore. https://doi.org/10.1007/978-981-99-8021-5_17
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DOI: https://doi.org/10.1007/978-981-99-8021-5_17
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