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Projector calibration of structured light system based on optimal matching area
Pages: 329-333
Year: Issue:  3
Journal: Laser & Infrared

Keyword:  structured light measurement3D reconstructionprojector calibrationlocal homography;
Abstract: As the precision of existing projector calibration algorithms is low,a new calibration method based on the optimal matching area is proposed according to projector nonlinear model.Firstly,the optimal matching area is ob-tained through the experiments.Then,local homographies of corners in the optimal matching area are computed.Fi-nally,the camera calibration method is used to calibrate the projector which reach the sub-pixel precision.The experi-ment results show that the proposed projector calibration algorithm is easy to operate.The calibration precision can a-chieve 0.1 061 7 pixel.The runtime costs 0.1 907 s and point cloud density is 9.1 4 per mm2 ,which meets the meas-urement requirements of high precision.
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