简介:Thispaperpresentsadirectmethodtofindtheinternalfaces.Itusesfoursetsofinformation:1getthecoordinatesofeachpointonthe3Dcompositeobjects;2basedonthe3Dcoordinatestocalculatealltheplaneequationoftwoobjects;3calculatealltheintersectinglinesofthetwoobjectsandexcludetheintersectinglineswhicharenotwithinthescopeoftheplane;4findingtheinternalface,theremainingintersectinglinesformedtheplaneistheinternalfaceofthetwoobjects.Weproposedanewalgorithmforfindinginternalfaces.Thisalgorithmcouldbeadaptedtoanyregularcompositeobjects.Thealgorithmworkswellforfindinginternalfaces.
简介:Aimingatachievingthehighaccuracy3Dmodelfromsliceimages,anewmodelreconstructionmethodusingsliceimagesisproposed.Wantingtoextracttheoutermostcontoursfromsliceimages,themethodoftheimprovedGVF-Snakemodelwithoptimizedforcefieldandraymethodisemployed.Andthen,the3Dmodelisreconstructedbycontourconnectionusingtheimprovedshortestdiagonalmethodandjudgmentfunctionofcontourfracture.Theresultsshowthattheaccuracyofreconstruction3Dmodelisimproved.