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《Journal of Zhejiang University(Engineering Science)》 2014-06
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A mesh deformation technique for fitting to closed contour

ZHANG Yun-long;WANG Jin;LU Guo-dong;State Key Laboratory of ,CAD and CG,Zhejiang University;  
In order to enhance the flexibility and effectness of 3Dmodelling,a mesh deformation technique was proposed for fitting to closed contour.After users edited contours interactively,the preliminary mesh result was computed by multiple iterations of barycentric coordinate deformation,and then the region of interest(ROI)was obtained automatically by comparing the original mesh and the preliminary mesh results.Then,the Laplacian mesh editing method was applied to each ROI.In addition,the mesh vertexes on the contours were used as boundary constraints to make sure that the deformed mesh results fit well to contours,and the part of coordinates of preliminary mesh vertexes were used as additional constraints to avoid evident dent in the mesh deformation.Taking the minimal difference between the differential property of the original mesh and that of the deformed mesh as the objective function,the mesh was deformed by builting and solving a sparse and linear equation set.Experimental results showed that this algorithm was simple and intuitive in the interactive edit process,with no manual selection of the deformation region.Besides,it can reserve local features of the mesh,and avoid evident dent in mesh deformation when contours are dragged into the mesh.
【Fund】: 国家自然科学基金资助项目61103106 51275460);; 高等学校博士学科点专项科研基金资助项目(20110101120005);; 浙江省公益技术研究工业项目(2013C31046);; 浙江省自然科学基金资助项目(Y1110230)
【CateGory Index】: TP391.41
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