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This paper points out and attempts to remedy a serious discrepancy in results obtained by global calibration methods: The re-projection error can be rendered very small by these methods, but we show that the optical distortion correction is far less accurate. This discrepancy can only be explained by internal error compensations in the global methods that leave undetected the inadequacy of the distortion...
According to the calibration of binocular vision, an improved two-stages camera calibration method involved with multi-distortion coefficients is introduced in this paper. It takes the sum of distance in the world coordinate between ground truth 3D points and calculated 3D points as cost function. The 3D points' coordinate are calculated by the imitated direct linear transformation (IDLT) triangulation...
We introduced the motion capture system using two CCD cameras recently, but could not show any better accuracy than a system using PSD camera. In this paper, we propose two kinds of method to improve the accuracy of the 3D acquisition of the motion capture system using CCD cameras. The applied methods are a distortion removal and z-axis adjustment. We show the result how much the accuracy on the 3D...
This paper focuses on the problems appeared during the camera calibration of the binocular vision system. Through the analysis on the data of the various points and the large quantities of the tests with the binocular position-setting system (BPS), it is noted that the biggest error appears on the z direction when the 3-D coordinate is re-built. The larger in the distributing area of the selected...
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