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Fuzzy clustering is capable of finding vague boundaries that crisp clustering fails to obtain. But time complexity of fuzzy clustering is usually high, and the need to specify complicated parameters hinders its use. In this paper, an entropy-based fuzzy clustering method is proposed. It automatically identifies the number and initial locations of cluster(More)
A hierarchical representation for heterogeneous object modeling is presented in this paper. To model a heterogeneous object, Boundary representation is used for geometry representation, and a novel Heterogeneous Feature Tree (HFT) structure is proposed to represent the material distributions. HFT structure hierarchically organizes the material variation(More)
This paper presents a new method for modeling cloth deformation. The proposed approach is a constrained finite element method. We successfully introduce a geometric constraint into the geometrical, non-linear, finite element equations. The assumed constraint is that lengths of all threads in a cloth object remain unchanged after deformation. Using the(More)