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Title: Free-Form Deformation for Point-Sampled Surface
Authors: Lin, Ping-Hsien;Lee, Yong-Yee;Lin, Cheng-Fon
Contributors: 資訊工程學系
Keywords: Point-sampled models;Clustering;Moving least square MLS surface;Freeform deformation FFD;Interpolation
Date: 2007-05
Issue Date: 2012-06-18T02:29:03Z
Publisher: 中央研究院資訊科學研究所
Abstract: In this paper, we present a free-form deformation (FFD) approach to manipulate point-sampled surface. Our approach provides users the powerful free-form deformation directly on point-sampled surface. In the preprocessing, we use a robust extension of hierarchical clustering scheme to partition a point-sampled model into clusters, fit a moving least square (MLS) surface to each of them, and define a valid polygonal area on the base domain of the MLS surface. At run time, we apply the conventional free-form deformation technique on these clusters. While users adjust the grids of the FFD lattice, we propose a novel interpolation method, which responses to the curvature variation during object deformation, to curve the base domain of the MLS surfaces of those clusters concerned. Finally, we resample the new base domain to produce the deformed point set model. The proposed technique is very intuitive, effective and easy to implement. With this technique, high frequency details from the original point-set surface can be maintained well on the deformed surface and several interesting deformed results of point-sampled models are demonstrated to verify the proposed scheme.
Relation: Journal of Information Science & Engineering, 23(3): 757 -771
Appears in Collections:[Department and Graduate Institute of Computer Science and Information Engineering] Periodical Articles

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