基于线元几何的旋转面点云数据旋转轴提取算法

计算机研究与发展 ISSN N 111777TP J ournal of Comp ut er Research and Develop ment 46 ( 10) : 1737 1742 , 2009 基于线元几何的旋转面点云数据旋转轴提取算法 1 ,2 2 张 　量 　　姜晓峰 1 (苏州职业大学计算机工程系 　江苏苏州 　2 15104) 2 (苏州大学计算机科学与技术学院　江苏苏州 　2 15006) (rainbow_zhli @163 . com) An Estimation Algorithm of the Axis of Rotation f rom 3D Cloud Data Based on L ine Element Zhan g Liang1 ,2 and J iang Xiaofeng2 1 ( D ep a rt ment of Comp uter E ng i nee ri ng , S uz hou Vocational Uni ve rs i ty , S uz hou , J i angs u 2 15104) 2 ( ) S chool of Comp ute r S cience Technology , S oochow Uni vers i ty , S uz hou , J i angs u 2 15006 Abstract 　Becau se of t he advant age s o n accuracy and exp editio u sne ss in recent CAD mo deling and rever se engineering , f eat ureba sed surface recon st r uction beco me s a hot topic in rever se en gineerin g . Esp ecially , 3D shap e reco gnition an d f eat ure ext raction i s t he difficult y an d key point of t he f eat ure ba sed rever se en gineerin g . To imp rove t he p erfor mance and ro bu st ne ss , a new met ho d for t he e stimation of t he axi s of rot ation ba sed on line element geo met ry , line co mp lex an d kinematic equation i s p re sent ed . The met ho d fir st p roj ect s t he dat a point s of a 3D volume to a line element imagesp ace . A linear co mp lex of t he line element s i s built an d t hen t he axi s i s app ro ximat ed by fit tin g a kinematic equatio n on it . It i s more efficient and fa st er t han t he p revio u s met ho ds becau se it doe snt need to e stimat e accurat e surface nor mal vector of t he clou d dat