Simultaneous structure and geometry detail completion based on interactive user sketches  

作　　者：YANG Shen QI Yue QIN Hong 

机构地区：[1]State Key Laboratory of Virtual Reality Technology and Systems,Beihang University,Beijing 100191,China [2]Department of Computer Science,State University of New York at Stony Brook,Stony Brook,New York 11794-4400,USA

出　　处：《Science China(Information Sciences)》2012年第5期1123-1137,共15页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant Nos. 60533070,60773153);Key Grant Project of Ministry of Education of China (Grant No. 308004);National High Technology Research and Development Program of China (Grant No. 2009AA012102);Beijing Natural Science Foundation(Grant No. 4102037);Qin Hong’s research in this work was supported in part by National Science Foundation(USA)(Grant Nos.IIS-0949467,IIS-0710819,IIS-0830183)

摘　　要：We articulate a novel approach to geometric model completion via interactive sketches in this paper.First,the initial incomplete model （with holes） is decomposed into a base model and a high-frequency component,which represents global rough shape and geometric details,respectively.We then repair the base model via smooth hole-filling,and compute the geometry detail image using high frequency information.One novel element of our approach is that we allow users to interactively sketch a few structural curves that span across hole regions,with a goal to repair both local geometric details and global structure.With the help of local parameterization,we convert detailed geometry into gradient-domain images which can propagate along user-specified sketches.By integrating recovered gradient-domain images and base shape,we can generate a complete model that faithfully recovers both global structure and local details.The salient contribution of this paper is the unified approach for user interaction,global structure,and geometry details towards high-fidelity model completion.We demonstrate our new approach using a number of examples that exhibit salient global structure as well as local geometry details.We articulate a novel approach to geometric model completion via interactive sketches in this paper.First,the initial incomplete model （with holes） is decomposed into a base model and a high-frequency component,which represents global rough shape and geometric details,respectively.We then repair the base model via smooth hole-filling,and compute the geometry detail image using high frequency information.One novel element of our approach is that we allow users to interactively sketch a few structural curves that span across hole regions,with a goal to repair both local geometric details and global structure.With the help of local parameterization,we convert detailed geometry into gradient-domain images which can propagate along user-specified sketches.By integrating recovered gradient-domain images and base shape,we can generate a complete model that faithfully recovers both global structure and local details.The salient contribution of this paper is the unified approach for user interaction,global structure,and geometry details towards high-fidelity model completion.We demonstrate our new approach using a number of examples that exhibit salient global structure as well as local geometry details.

关 键 词：model repair geometric modeling interactive sketch 3D graphics 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O175.12[自动化与计算机技术—计算机科学与技术]