APPLICATION OF CONSTRAINED TOTAL LEASTSQUARES TO CLOUD POINT REGISTRATION
Chen Weixian 1) ;Yuan Qing 1) ; and Chen Yi 1,2)
1)Department of Surveying and Geo-informatics, Tongji University, Shanghai 2000922)Key Laboratory of Modern Engineering Surveying, SBSM, Shanghai 200092
Abstract:The cloud point registration is a peoblem of three dimensionaldatum transformation with big rotation angle.As the fitting coordinates of sphere target’s centers in the two sets of scanning coordinate systems are both influnenced by errors, we introduce constrained total leastsquares (CTLS) method for cloud point registration. We established the errorsinvariables(EIV) model with the constraints and revised the observed vector and the coefficient matrix.The calculated example has proved that the more reasonable transformation model and the more accurate parameter solution can be given with CTLS methods as compared with the CLS methods.