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arXiv 2110.15313cs.GRcs.LG
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Blendshape人脸模型的聚类

Clustering of the Blendshape Facial Model

Institute for Systems and Robotics(系统与机器人研究所);Instituto Superior Técnico(里斯本高等理工学院);NOVA School of Science and Technology(NOVA科学技术学院);Faculty of Sciences UNS(诺维萨德大学理学院);Lateral, Epic Games Company(3Lateral,Epic Games公司)

Stevo Racković, Cláudia Soares, Dušan Jakovetić, Zoranka Desnica, Relja Ljubobratović

摘要:

数字人体动画依赖于高质量的人脸3D模型--钻机。面装备必须准确,同时计算速度要快。最常见的装配模型之一是混合变形模型。我们提出了一种新的方法来学习反钻机参数在提高精度和降低计算成本的同时。它基于blendshape人脸模型的双重聚类。我们的方法专注于变形的基本空间,并在网格空间和控制器空间中产生集群-这在以前的文献中没有研究过。这种分割发现了面部上的顶点组与变形控制之间直观且有意义的联系,并且可以独立地观察这些分段。然后,针对每个段学习用于求解逆钻机问题的单独模型。我们的方法是完全无监督和高度并行化。

英文摘要:

Digital human animation relies on high-quality 3D models of the human face -- rigs. A face rig must be accurate and, at the same time, fast to compute. One of the most common rigging models is the blendshape model. We present a novel approach for learning the inverse rig parameters at increased accuracy and decreased computational cost at the same time. It is based on a two-fold clustering of the blendshape face model. Our method focuses exclusively on the underlying space of deformation and produces clusters in both the mesh space and the controller space -- something that was not investigated in previous literature. This segmentation finds intuitive and meaningful connections between groups of vertices on the face and deformation controls, and further these segments can be observed independently. A separate model for solving the inverse rig problem is then learned for each segment. Our method is completely unsupervised and highly parallelizable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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