Ma Liming,Jiang Hong,Wang Xiaochun
(School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)
Abstract:Aimed at the limitation of the traditional three points locating method in measuring data registration,a new idea applied the similarity theory to pattern recognition to the registration of measuring data under different viewpoints is presented,where the curvature extremum points in data superposition area are searched with the gradient method,then the feature points in the curvature extremum points according to the principle of gay similitude in pattern recognition are acquired,and the measuring data registration is carried out at the corresponding feature points． This algorithm is used in the registration of hydroelectric turbine blades,and the results show that this novel idea can realize the different viewpoints measuring and data registering for 3D surfaces and demonstrates the features of satisfied rate, higher accuracy and flexible operation．
Keywords:measured data;multi-view registration;pattern recognition;similitude