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《Modern Manufacturing Engineering》 2014-04
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Research on rough registration algorithm between industrial CT scanning model and original model

Zhang Rong;Wang Kan;School of Mechanical Engineering,Chongqing Vocational Institute of Engineering;ICT Research Center,Chongqing University;  
Scan of the rebuilt model and original product model is one of the key steps for the registration when scanning the product by the industrial CT. The problem of the uncertain main direction method existed in the rough registration algorithm for Principal Component Analysis( PCA),which could result in the registration failure. Proposed the main direction method to solve the problem. Firstly a registration result was worked out by PCA,then calculated the relative vector from model centroid to geometric center according to analyze the projection characteristics of the vector in each reverse situation,determined whether there was the opposite problem or not for the registration result,and the correct direction was worked out by the rotation axis. The experiment software is developed for the rough registration algorithm and the improved method is used to make experiment. It shows that the method can effectively solve the opposite direction problem of the model by PCA.
【Fund】: 重庆市科技攻关项目(CSTC2009AC3047)
【CateGory Index】: TP391.41
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