We present a curve-skeleton extraction method in the form of curve-skeleton transfer from the source shape to the target. The shapes we deal with need to be in correspondence. They are discretized as meshes embedded in 3D and are not necessarily watertight. They can even be in arbitrary topology, and furthermore be disconnected point clouds. Our method associates the source skeleton with the source shape and computes the optimal rigid transformations towards the corresponding query shape points. This transformation for each source skeleton point is followed by a post-processing operation. Fixed skeleton connectivity maintained throughout the transfer guarantees that the resulting skeleton is as complex as the source skeleton, e.g., no redundant branches and complicated joint hierarchies. The performance and versatility of our method as well as its advantages over a direct skeleton extraction method are demonstrated.

我们以从源形状到目标的曲线骨架转移的形式提出了一种曲线骨架提取方法。我们处理的形状必须相对应。它们离散化为嵌入3D的网格，并不一定是水密的。它们甚至可以处于任意拓扑中，而且可以是不连续的点云。我们的方法将源骨骼与源形状相关联，并朝相应的查询形状点计算最佳的刚性变换。每个源骨架点的此转换后均进行后处理操作。在整个传输过程中保持固定的骨架连接性，可以确保生成的骨架与源骨架一样复杂，例如，没有多余的分支和复杂的联合层次结构。