靶标成像双目视觉坐标测量建模

Modeling on Probe Imaging Vision Coordinate Measurement with Binocular Cameras

提出了一种利用手持式靶标实现双目视觉三维坐标测量建模的新方法。利用空间透视变换建立了非线性测量模型,介绍了基于牛顿非线性迭代的测量方程的求解方法。以矩阵分析理论为基础,讨论了影响测量方程求解的因素,并提出了方法中重要部件手持式靶标上特征点分布的基本约束条件,为这一方法在实际应用中获得较高的测量精度提供了较为完善的理论分析依据。通过数值分析与计算,验证了理论分析的正确性和这一方法应用的可行性。

A novel measurement technique using dual camera with a hand-held probe on known points for measuring 3D coordinates is proposed. A nonlinear measurement model is set by perspective transform. A method of Newton iterative to calculate 3D coordinates of points on the objective is described. Based on the matrix analysis, the effect of the parameters on the resolutions is discussed and the restriction is proposed. By numerical calculation, the correctness of the measurement model and its resolving method is given.