Research On Error Evaluation Scheme of Body In White Surface Profile
Aiming at the problem that point cloud coordinate system does not correspond in the process of measuring point cloud data by CMM,this study proposes an improved ICP point cloud registration method to register theoretical and measured point clouds.Combining with the idea of limit approximation,the point cloud profile is transformed into the error evaluation process of local point cloud flatness,and the minimum region method is used to evaluate the point cloud profile error.According to the analysis structure of the simulation ex-periment,the improved point cloud registration method can converge to the better objective function,and the registration effect is improved by 23%and 20%respectively.The profile error obtained by the evaluation scheme is reduced by 30%,which effectively improves the accuracy of profile evaluation and the pass rate of workpiece.
Body in white profilePoint cloud registrationProfile error evaluationAlgorithm design
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