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Iterative mesh deformation for dense surface tracking

机译:迭代网格变形以实现密集表面跟踪

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摘要

In this paper we present a new method to capture the temporal evolution of a surface from multiple videos. By contrast to most current methods, we introduce an algorithm that uses no prior of the nature of tracked surface. In addition, it does not require sparse features to constrain the deformation but only relies on strictly geometric information : a target set of 3D points and normals. Our approach is inspired by the Iterative Closest Point algorithm but handles large deformations of non-rigid surfaces. To this end, a mesh is iteratively deformed while enforcing local rigidity with respect to the reference model. This rigidity is preserved by diffusing it on local patches randomly seeded on the surface. The iterative nature of the algorithm combined with the softly enforced local rigidity allows to progressively evolve the mesh to fit the target data. The proposed method is validated and evaluated on several standard and challenging surface data sets acquired using real videos.
机译:在本文中,我们提出了一种从多个视频中捕获表面时间演变的新方法。与大多数当前方法相比,我们引入了一种算法,该算法不使用被跟踪曲面的先验性质。此外,它不需要稀疏特征来约束变形,而仅依赖严格的几何信息:3D点和法线的目标集。我们的方法受迭代最近点算法的启发,但可以处理非刚性表面的大变形。为此,网格要反复变形,同时要相对于参考模型增强局部刚度。通过将其扩散到表面上随机播种的局部补丁上,可以保留这种刚性。该算法的迭代性质与软强制的局部刚度相结合,可以逐步演化网格以适合目标数据。在使用真实视频获取的几个标准且具有挑战性的表面数据集上对提出的方法进行了验证和评估。

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