Qi Zhaoshuai, Wang Zhao, Huang Junhui, Xing Chao, Gao Jianmin
Appl Opt. 2018 Jan 1;57(1):A181-A188. doi: 10.1364/AO.57.00A181.
In the phase-measuring structured-light method, image saturation will induce large phase errors. Usually, by selecting proper system parameters (such as the phase-shift number, exposure time, projection intensity, etc.), the phase error can be reduced. However, due to lack of a complete theory of phase error, there is no rational principle or basis for the selection of the optimal system parameters. For this reason, the phase error due to image saturation is analyzed completely, and the effects of the two main factors, including the phase-shift number and saturation degree, on the phase error are studied in depth. In addition, the selection of optimal system parameters is discussed, including the proper range and the selection principle of the system parameters. The error analysis and the conclusion are verified by simulation and experiment results, and the conclusion can be used for optimal parameter selection in practice.
在相位测量结构光方法中，图像饱和会导致较大的相位误差。通常，通过选择合适的系统参数（如相移数、曝光时间、投影强度等），可以减小相位误差。然而，由于缺乏完整的相位误差理论，在选择最优系统参数时没有合理的原则或依据。因此，对图像饱和引起的相位误差进行了全面分析，并深入研究了相移数和饱和度这两个主要因素对相位误差的影响。此外，还讨论了最优系统参数的选择，包括系统参数的合适范围和选择原则。通过仿真和实验结果验证了误差分析和结论，该结论可用于实际中的最优参数选择。
