基于三视图的曲面体重建技术.pdfVIP

39 11 V ol . 39, No . 11 2002 11 J O U RN A L OF COM P U T ER RESEA RCH A N D D EV EL O PM EN T No v . 2002 ¹ º ¹ 张爱军 　诸昌钤 　薛　勇 ¹ 100 10 1) º 6 10031) aj. zhang@ 263. net ) , , , , , . , , M o ebiu s rule) , , , . . , , , , 391. 41 T P 3 RECONSTRUCTION OF CURVILINEAR D OBJECTS FROM ORTHOGRAPHIC VIEWS ¹ º ¹ ZHA N G A i-Jun , ZHU Chang -Qian , and X UE Yo ng ¹ LA R SI S , I nstitute of R emote S ensing App lications, Chinese A cademy of S ciences, B eij ing 100 10 1) º S ch ool of Comp uter Communications E ngineering , Southw est J iaotong Univ ersity , Cheng du 6 10031) AbstractA met hod fo r reconst ruct ing solids w it h quadric surf ace fro m o rt ho graphic view s is pr esent ed . First , the w ire-f rame m odel co rresponding to t he t hree ort hog raphic view s is co n- st ruct ed. In o rder t o generat e 3D conic edg es in t he w ire-f rame model , a f ive-point met hod is first ly ut ilized t o obt ain t he algebraic represent at ions of all 2D -projection curves in each v iew , and t hen all algebr aic f orm s are convert ed t o the corresponding g eo met ric f orm s analyt ically . T he lo- cu s o f a 3D conic edg e can be derived fro m t he g eo metr ic f orms of t he r elevant co nic curves in t hr ee view s, and the relat io nship bet w een a 3D conic and it s ort hographic project ions is est a