摄像机标定中光心图像坐标确定方法-Core.PDF

33 7 Vol.33, No.7 2006 7 Opto-Electronic Engineering July, 2006 1003501X(2006 1, 2 3 1 ( 1. 110016 2. 100039 3. 110003 ) TP391 A Camera calibration method for optical center 1, 2 3 1 GAO Hong-wei WU Cheng-dong LI Bin ( 1. Robotics Laboratory, Shenyang Institute of Automation, the Chinese Academy of Sciences, Shenyang 110016, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; 3. School of Information Science Engineering, Northeast University, Shenyang 110003, China ) Abstract Based on the analysis of the merit and flaw of traditional methods such as direct optical method, varying focal length method and Radial Alignment Constraint (RAC) method, two kinds of improved optical center determination methods were put forward and discussed in detail. They were improved RAC method and project matrix decomposition method with constraint. The optical center obtained from two improved methods, direct optical method and being substituted by image center were all applied into camera’s calibration and 3D measurement. Experiment and simulation results show that accuracy of two i