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《China Mechanical Engineering(中国机械工程)》 2009-14
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A Novel Linear Approach for Camera Calibration Based on Parallel Mechanism

Zhang Shihui Guo Cuicui Kong Lingfu Yanshan University,Qinhuangdao,Hebei,066004  
A novel linear approach for camera calibration based on parallel mechanism was proposed.First,the integrated expression of camera model with the first-order radial distortion was educed.Then a virtual 3D target was constructed by using the motion platform of the 6-DOF parallel mechanism as the carrier of 2D planar template.After the first-order radial distortion parameter and the principal point coordinates were solved,the other parameters were computed linearly using the foregoing camera model and the information of virtual 3D target.This approach can make the calibration state consistent with the work state,it eliminates 3D target's facture and the instability of nonlinear optimization.Experiments with simulated data as well as real image show that the approach is feasible and efficient.
【Fund】: 国家863高技术研究发展计划资助项目(2006AA04Z212);; 河北省自然科学基金资助项目(F2007000423)
【CateGory Index】: TP391.41
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