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  1. Article

    Open Access

    Noise4Denoise: Leveraging noise for unsupervised point cloud denoising

    Existing deep learning-based point cloud denoising methods are generally trained in a supervised manner that requires clean data as ground-truth labels. However, in practice, it is not always feasible to obtai...

    Weijia Wang, **ao Liu, Hailing Zhou, Lei Wei, Zhigang Deng in Computational Visual Media (2024)

  2. No Access

    Article

    Veintr: robust end-to-end full-hand vein identification with transformer

    Hand vein identification stands out to be an increasingly popular approach for biometric identification due to its distinctiveness and convenience. While state-of-the-art techniques are able to achieve good pe...

    Shenglin Lu, Sheldon Fung, Wei Pan, Nilmini Wickramasinghe in The Visual Computer (2024)

  3. No Access

    Chapter and Conference Paper

    TopFormer: Topology-Aware Transformer for Point Cloud Registration

    The extraction of robust feature descriptors is crucial for achieving accurate point cloud registration. While the attention mechanism plays an important role in enabling sparse point features to learn global ...

    Sheldon Fung, Wei Pan, **ao Liu, John Yearwood in Computational Visual Media (2024)

  4. Article

    Open Access

    3D face recognition: A comprehensive survey in 2022

    In the past ten years, research on face recognition has shifted to using 3D facial surfaces, as 3D geometric information provides more discriminative features. This comprehensive survey reviews 3D face recogni...

    Ya** **g, Xuequan Lu, Shang Gao in Computational Visual Media (2023)

  5. No Access

    Article

    Segmentation-driven feature-preserving mesh denoising

    Feature-preserving mesh denoising has received noticeable attention in visual media, with the aim of recovering high-fidelity, clean mesh shapes from the ones that are contaminated by noise. Existing denoising...

    Weijia Wang, Wei Pan, Chaofan Dai, Richard Dazeley, Lei Wei in The Visual Computer (2023)

  6. No Access

    Article

    Unsupervised contrastive learning with simple transformation for 3D point cloud data

    Though a number of point cloud learning methods have been proposed to handle unordered points, most of them are supervised and require labels for training. By contrast, unsupervised learning of point cloud dat...

    **cen Jiang, Xuequan Lu, Wanli Ouyang, Meili Wang in The Visual Computer (2023)

  7. Article

    Open Access

    Towards uniform point distribution in feature-preserving point cloud filtering

    While a popular representation of 3D data, point clouds may contain noise and need filtering before use. Existing point cloud filtering methods either cannot preserve sharp features or result in uneven point d...

    Shuaijun Chen, **xi Wang, Wei Pan, Shang Gao, Meili Wang in Computational Visual Media (2023)

  8. Article

    Open Access

    G2MF-WA: Geometric multi-model fitting with weakly annotated data

    In this paper we address the problem of geometric multi-model fitting using a few weakly annotated data points, which has been little studied so far. In weak annotating (WA), most manual annotations are suppos...

    Chao Zhang, Xuequan Lu, Katsuya Hotta, ** Yang in Computational Visual Media (2020)