Fragmented skull modeling using heat kernels

详细信息	查看全文 | 推荐本文 |

• 作者：Wei Yu^a ; Maoqing Li^a ; Xin Li^b ; ^{xinli@lsu.edu}
• 关键词：Skull modeling ; Geometric reassembly
• 刊名：Graphical Models
• 出版年：2012
• 期刊代码：130_15240703
• 类别：cp
• 出版时间：July, 2012
• 卷：74
• 期：4
• 页码：140-151
• 文件大小：1773 K

摘要

We develop a geometric reassembly algorithm that composes a 3D model from its fragments. One important application of this work is skull completion and modeling in archeology and forensics. Our reassembly algorithm employs a scale-space representation of shape based on the heat kernel, which only depends on the intrinsic geometry of the surfaces. Partial matching can then be conducted effectively. The entire assembly pipeline has three steps: (1) fragment-template matching based on heat-kernel; (2) matching refinement based on RANSAC and assembly computation; (3) assembly refinement using least square transformation error (LSTE) of break-curves. The main contribution of this paper is presenting novel algorithms for the first two steps. Experimental results on scanned skull fragments demonstrate the efficacy and robustness of our algorithm.