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Interactive point cloud blending by drag-and-drop
作者姓名:ZOU  Wan-hong  DING  Zhan  YE  Xiu-zi  CHEN  Zhi-yang
作者单位:ZOU Wan-hong?1,DING Zhan1,YE Xiu-zi1,CHEN Zhi-yang2 (1State Key Lab. of CAD and CG,School of Computer Science and Technology,Zhejiang University,Hangzhou 310027,China) (2Software College,Zhejiang University of Technology,Hangzhou 310014,China)
基金项目:Project supported by the National Natural Science Foundation of China (Nos. 60473106 and 60333010), and the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0652), China
摘    要:With the rapid development of 3D digital photography and 3D digital scanning devices, massive amount of point samples can be generated in acquisition of complex, real-world objects, and thus create an urgent need for advanced point-based processing and editing. In this paper, we present an interactive method for blending point-based geometries by dragging-and- dropping one point-based model onto another model’s surface metaphor. We first calculate a blending region based on the polygon of interest when the user drags-and-drops the model. Radial basis function is used to construct an implicit surface which smoothly interpolates with the transition regions. Continuing the drag-and-drop operation will make the system recalculate the blending regions and reconstruct the transition regions. The drag-and-drop operation can be compound in a constructive solid geometry (CSG) manner to interactively construct a complex point-based model from multiple simple ones. Experimental results showed that our method generates good quality transition regions between two raw point clouds and can effectively reduce the rate of overlapping during the blending.

关 键 词:几何模式  点云模式  拖放式文本编辑  计算机技术
收稿时间:2007-01-10
修稿时间:2007-05-15

Interactive point cloud blending by drag-and-drop
ZOU Wan-hong DING Zhan YE Xiu-zi CHEN Zhi-yang.Interactive point cloud blending by drag-and-drop[J].Journal of Zhejiang University Science,2007,8(10):1633-1641.
Authors:Zou Wan-hong  Ding Zhan  Ye Xiu-zi  Chen Zhi-yang
Institution:(1) State Key Lab. of CAD and CG, School of Computer Science and Technology, Zhejiang University, Hangzhou, 310027, China;(2) Software College, Zhejiang University of Technology, Hangzhou, 310014, China
Abstract:With the rapid development of 3D digital photography and 3D digital scanning devices, massive amount of point samples can be generated in acquisition of complex, real-world objects, and thus create an urgent need for advanced point-based processing and editing. In this paper, we present an interactive method for blending point-based geometries by dragging-and-dropping one point-based model onto another model’s surface metaphor. We first calculate a blending region based on the polygon of interest when the user drags-and-drops the model. Radial basis function is used to construct an implicit surface which smoothly interpolates with the transition regions. Continuing the drag-and-drop operation will make the system recalculate the blending regions and reconstruct the transition regions. The drag-and-drop operation can be compound in a constructive solid geometry (CSG) manner to interactively construct a complex point-based model from multiple simple ones. Experimental results showed that our method generates good quality transition regions between two raw point clouds and can effectively reduce the rate of overlapping during the blending. Project supported by the National Natural Science Foundation of China (Nos. 60473106 and 60333010), and the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0652), China
Keywords:Drag-and-drop  Point cloud model  Interactive blending  Geometry modeling
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