Direct extraction of surface meshes from implicitly represented heterogeneous volumes
Computer-Aided Design
Extraction of isosurfaces from multi-material CT volumetric data of mechanical parts
Proceedings of the 2008 ACM symposium on Solid and physical modeling
Proceedings of the 12th IMA international conference on Mathematics of surfaces XII
Piecewise tri-linear contouring for multi-material volumes
GMP'10 Proceedings of the 6th international conference on Advances in Geometric Modeling and Processing
| Hi-index | 0.00 |
This paper describes a method for extracting surfaces from multi-material CT (Computed Tomography) data. Most contouring methods such as Marching Cubes algorithm assume that CT data are composed of only two materials. Some extended methods such as [1, 2] can extract surfaces from the multi-material (non-manifold) implicit representation. However, these methods are not directly applicable to CT data which are composed of three or more materials. There are two major problems that arise from fundamentals of CT. The first problem is that we have to use n(n-1)/2 threshold values for CT data contains n materials and select appropriately one threshold value for each boundary area. The second is that we cannot reconstruct only from CT data in which area three or more materials are adjacent each other. In this paper, we propose a method to solve the problems by using image analysis and demonstrate the effectiveness of the method with application examples construct polygon models from CT data of machine parts.