结构光测量技术具有无接触、测量速度快、测量精度较高且成本较低等优点而被广泛应用到各个领域。结构光测量系统的精度取决于系统标定精度。综述了结构光测量系统的现有标定方法,即基于矩阵变换的摄影测量法、基于几何关系的三角测量法和多项式拟合法。摄影测量法可以进一步分为伪相机法、逆向相机法和光平面法。从误差扩散、对投影仪标定的依赖性、精密辅助标定装置、操作复杂度等方面对上述标定方法进行了对比。指出标定方法的研究趋势是从实验室方法向现场标定技术的转变,要求标定装置简单、标定过程便捷、标定时间快速且精度高。

Structured light measurement is widely used in various areas due to noncontact, high speed, high measurement accuracy and low cost. The measurement accuracy of structured light measurement system depends on the calibration accuracy. The existing calibration methods were reviewed including the photogrammetry based on matrix transformation, geometrybased triangulation, and polynomial method. Photogrammetry can be further divided into inverse camera, pseudocamera, and lightstripe plane. All the calibration methods were compared in the view of error propagation, dependence on projector calibration, precise auxiliary calibration gauge, and operation complexity. It is pointed out that the trend of calibration method is from laboratory to factory techniques, which require simple calibration device, convenient calibration process, fast calibration and high calibration precision.