网格修补的特征配准方法

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1、1230中图法分类号:TP391.7文献标识码:A文章编号:1006-8961(2015)09-1230-07论文引用格式:QianGP，ZhangXH，PanＲF.Meshcompletionwithfeatureregistration［J］.JournalofImageandGraphics，2015，20(9):1230-1236.［钱归平，张小红，潘瑞芳.网格修补的特征配准方法［J］.中国图象图形学报，2015，20(9):1230-1236.］［DOI:10.11834/jig.20150910］网格修补的特征配准方法钱归平，

2、张小红，潘瑞芳浙江传媒学院新媒体学院，杭州310018摘要:目的网格重建和编辑会产生几何特征缺失的模型，填补这些空洞具有重要的意义。为了克服复杂曲面修补中网格融合难以配准的问题，提出了环驱动球坐标结合基于曲率及法向ICP(iterativeclosestpoint)迭代配准的网格修补方法。方法首先用户查找合适的源网格面片放入空洞处周围;然后对目标网格空洞环建立B样条曲线，将带修补网格包边界置于B样条曲线上，构架环驱动球坐标，将源网格变形初步配准目标网格空洞周围领域;最后使用Laplacian光顺并基于网格曲率及法向进行ICP迭代配准，使源

3、网格与目标网格光滑拼接融合。结果该方法能够有效修补网格空洞缺失的细节特征，并且拼接处光滑连续。结论环驱动球坐标配准避免了网格变形的包围网格笼子构造，再通过ICP迭代精确配准网格，和以往的网格修补方法相比，该方法能够很好地修补网格空洞处细节特征。关键词:网格修补;环驱动球坐标;ICP迭代;拉普拉斯光顺MeshcompletionwithfeatureregistrationQianGuiping，ZhangXiaohong，PanＲuifangCollegeofNewMedia，ZhejiangUniversityofMediaandCom

4、munications，Hangzhou310018，ChinaAbstract:ObjectiveMissinggeometryappearsduringmeshreconstructionandediting;completingtheholesisthusimpor-tant.Tocompletetheholesofacomplexsurfaceeffectively，meshcompletionbasedonloop-drivensphericalcoordinatesanditerativeclosestpoint(ICP)re

5、gistrationwithcurvatureandnormalispresented.MethodFirst，theusersearchesforasimilarmeshpatchandplacesitaroundtheholeofthemesh.Second，theB-splinecurveisutilizedtofittheholeboundaryofthetarget.TheboundaryloopofthesourcemeshislocatedontheB-spline.Loop-drivensphericalcoordinat

6、es，whichmapanddeformthesourcemeshpatchtomatchthetargetmesh，arethenconstructed.Finally，LaplaciansmoothingandtheICPalgorithmwithcurvatureandnormalareappliedtocompletethemeshcompletion.Twomeshpartsaremergedsmoothly.ＲesultExperimentalresultsrevealtheproposedalgorithm'sability

7、toretrieveamissingfeatureeffectivelyandsmoothly.ConclusionTheloop-drivensphericalcoordinatespreventtheapplicationofcagemeshestodeformation，andtheICPiterationcancompletetheregistrationeffectively.Comparedwithearlierapproaches，theproposedalgorithmcanre-trieveamissingfeature

8、effectively.Keywords:meshcompletion;loop-drivensphericalcoordinates;iterativeclosestpoint(ICP)it