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Laplacian Mesh Transformer: Dual Attention and Topology Aware Network for 3D Mesh Classification and Segmentation

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Computer Vision – ECCV 2022 (ECCV 2022)

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Abstract

Deep learning-based approaches for shape understanding and processing tasks have attracted considerable attention. Despite the great progress that has been made, the existing approaches fail to efficiently capture sophisticated structure information and critical part features simultaneously, limiting their capability of providing discriminative deep shape features. To address the above issue, we proposed a novel deep learning framework, Laplacian Mesh Transformer, to extract the critical structure and geometry features. We introduce a dual attention mechanism, where the \(1^\textrm{st}\) level self-attention mechanism is used to capture the critical partial/local structure and geometric information on the entire mesh, and the \(2^\textrm{nd}\) level is to fuse the geometrical and structural features together with the learned importance according to a specific downstream task. More particularly, Laplacian spectral decomposition is adopted as our basic structure representation given its ability to describe shape topology (connectivity of triangles). Our approach builds a hierarchical structure to process shape features from fine to coarse using the dual attention mechanism, which is stable under the isometric transformations. It enables an effective feature extraction that can tackle 3D meshes with complex structure and geometry efficiently in various shape analysis tasks, such as shape segmentation and classification. Extensive experiments on the standard benchmarks show that our method outperforms state-of-the-art methods.

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Acknowledgments

The work was supported by the National Natural Science Foundation of China (No. 61872440).

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Authors and Affiliations

  1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China

    Xiao-Juan Li & Jie Yang

  2. University of Chinese Academy of Sciences, Beijing, China

    Xiao-Juan Li & Jie Yang

  3. Victoria University of Wellington, Wellington, New Zealand

    Fang-Lue Zhang

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  1. Xiao-Juan Li
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  2. Jie Yang
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  3. Fang-Lue Zhang
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Correspondence to Jie Yang .

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Editors and Affiliations

  1. Tel Aviv University, Tel Aviv, Israel

    Shai Avidan

  2. University College London, London, UK

    Gabriel Brostow

  3. Google AI, Accra, Ghana

    Moustapha Cissé

  4. University of Catania, Catania, Italy

    Giovanni Maria Farinella

  5. Facebook (United States), Menlo Park, CA, USA

    Tal Hassner

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Li, XJ., Yang, J., Zhang, FL. (2022). Laplacian Mesh Transformer: Dual Attention and Topology Aware Network for 3D Mesh Classification and Segmentation. In: Avidan, S., Brostow, G., Cissé, M., Farinella, G.M., Hassner, T. (eds) Computer Vision – ECCV 2022. ECCV 2022. Lecture Notes in Computer Science, vol 13689. Springer, Cham. https://doi.org/10.1007/978-3-031-19818-2_31

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