【摘要】 为实现数字莫尔条纹三维测量中物体位相分布与高度值的准确对应，文章提出一种快速系统校准的实验方法。根据系统模型推导出相位-高度的映射方程，将参考面沿着接近投影仪的方向放置在2个已知高度处，并处理得到对应高度下参考面的位相值分布；使用得到的2组数据对方程系数进行标定，标定结果与理论分析结果相一致；使用标定后的映射方程对三维物体进行重建，测量得到的峰值高度误差仅为0.19%。该校准方法不需要对系统参数进行复杂的物理测量，避免了人为测量引入的误差，具有较高的测量精度与分辨率，且系数标定的方法简洁方便，是一种可行的实验方案。更多还原

【Abstract】 In order to realize the accurate correspondence between the phase distribution of the object and the height value in the 3 D digital moiré fringe measurement, this paper proposes an experimental method for rapid system calibration. The phase-height mapping equation is derived from the system model, the reference plane is placed at two known heights along the direction close to the projector, and the phase value distribution of the reference plane at the corresponding height is processed. The obtained two sets of data are used to calibrate the equation coefficients, and the calibration results are consistent with those of the theoretical analysis. The 3 D object is reconstructed using the mapping equation after calibration. The measured peak height error is only 0.19%. This method does not require complex object measurement of system parameters, avoids errors introduced by human measurement, and has high measurement accuracy and resolution. And the method of coefficient calibration is simple and convenient which is considered to be a feasible experimental scheme.更多还原