Example‐Driven Deformations Based on Discrete Shells
Example‐Driven Deformations Based on Discrete Shells
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DOI：
10.1111/j.1467-8659.2011.01974.x
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发表时间：
2011-12
影响因子：
2.5
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中科院分区：
文献类型：
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尽管在基于交互物理的网格变形方面取得了巨大进展，但操纵几何复杂的网格或设置详细的角色仍然是一项繁琐且耗时的任务。示例驱动的方法通过结合从示例姿势中学习到的结构或解剖学知识，大大简化了建模过程。然而，这些方法产生反直观的，非物理的结果，只要由示例姿势跨越的形状空间被留下。在本文中，我们提出了一个建模框架，这是由示例驱动和基于物理的，从而克服了这两种方法的局限性。基于离散壳能量的扩展，我们推导出网格变形和网格插值技术，这些技术可以无缝地结合到一个简单而灵活的基于网格的逆运动学系统中。
Despite the huge progress made in interactive physics‐based mesh deformation, manipulating a geometrically complex mesh or posing a detailed character is still a tedious and time‐consuming task. Example‐driven methods significantly simplify the modelling process by incorporating structural or anatomical knowledge learned from example poses. However, these approaches yield counter‐intuitive, non‐physical results as soon as the shape space spanned by the example poses is left. In this paper, we propose a modelling framework that is both example‐driven and physics‐based and thereby overcomes the limitations of both approaches. Based on an extension of the discrete shell energy we derive mesh deformation and mesh interpolation techniques that can be seamlessly combined into a simple and flexible mesh‐based inverse kinematics system.