Abstract
A flexible global calibration method for multi-view stereo vision with non-overlapping field of view (FOV) using linear structured light projector is presented in this paper. At least three groups of linear structured light plane equations are utilized to calculate the rotation between any pair of cameras with non-overlapping FOV, and then the closed solution of the translation is determined based on the constraint that the normal vector is perpendicular to the lines on linear structured light plane. Once the rotation and translation between all pairs of cameras with non-overlapping FOV are obtained, the rotation and translation of each camera relative to the reference position is eventually computed through global optimization. The experimental data reflects that the calibration accuracy is improved by 35.2% after global optimization, and the global calibration results of the proposed method deviates less from that of Zhang’s method.
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