基于可视外壳的cage生成

Cage Generation Based on Visual Hull

借助cage作为代理几何来处理高精度复杂模型,正成为计算机动画与几何造型中的一种重要方法.目前,已有的cage生成算法尚缺乏普适性,很大程度上依赖于几何的表示和模型的复杂度.因此,提出一种基于可视外壳的cage生成算法.通过逆向模拟计算机视觉领域可视外壳的生成过程获取cage,以实现cage生成与几何表示和模型复杂度无关的目标.实验结果表明,该方法易于实现且效率高.

Cage, which is adopted as the proxy geometry, plays an important role in processing high-precision and complex models in computer animation and geometric modeling. Currently, cage generation algorithms are heavily dependent on representation and complexity of the shape, which could not be applied to various models universally. To decouple the cage generation from the representation and complexity of the shape, the paper proposes a cage generation algorithm based on visual hull in computer vision. The algorithm can generate tight and coarse cage by inverse simulation of visual hull construction procedure. The results demonstrate usability and efficiency of the proposed algorithm.