Somasundaram, Guruprasad,Ribnick, Evan J.,Sivalingam, Ravishankar,Scott, Shannon D.,Golnari, Golshan,Eid, Aya
申请号：
AU2018250487
公开号：
AU2018250487A1
申请日:
2018.10.19
申请国别(地区):
AU
年份:
2018
代理人:
摘要：
#$%^&*AU2018250487A120181115.pdf#####ABSTRACT A method for aligning a digital 3D model of teeth, comprising steps of: receiving a digital 3D model of teeth represented by a 3D mesh in random alignment； computing a grid of vectors aligned with a desired axis within a 3D coordinate system； projecting the 5 vectors through the mesh to count a number of intersections of the vectors with faces of the mesh； computing a cost function for the mesh based upon the number of intersections； and rotating the mesh and repeating the projecting and the computing the cost function steps until the cost function is maximized to align the mesh with the desired axis, wherein the computing the cost function step comprises computing as the cost 10 function f(O) = (sum(n == 1) / sum(n >； 1)), where 0 is an angle of rotation of the desired axis, and n is a number of the faces each of the vectors intersects.2/2 0 col 0 ct C) F <；D Cr- c :3) a W CDo C) D~ aco CON ~ ~ OC CMt. S coo ) 4-".~::Jc ~ , 0 <； CD )-)I CCO CL c f l = t E in
