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Reconstruction method for fringe projection profilometry based on light beams

机译：基于光束的条纹投影轮廓测定法的重建方法

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A novel reconstruction method for fringe projection profilometry, based on light beams, is proposed and verified by experiments. Commonly used calibration techniques require the parameters of projector calibration or the reference planes placed in many known positions. Obviously, introducing the projector calibration can reduce the accuracy of the reconstruction result, and setting the reference planes to many known positions is a time-consuming process. Therefore, in this paper, a reconstruction method without projector's parameters is proposed and only two reference planes are introduced. A series of light beams determined by the subpixel point-to-point map on the two reference planes combined with their reflected light beams determined by the camera model are used to calculate the 3D coordinates of reconstruction points. Furthermore, the bundle adjustment strategy and the complementary gray-code phase-shifting method are utilized to ensure the accuracy and stability. Qualitative and quantitative comparisons as well as experimental tests demonstrate the performance of our proposed approach, and the measurement accuracy can reach about 0.0454 mm. (C) 2016 Optical Society of America
机译：提出了一种基于光束的条纹投影轮廓测量的新方法，并通过实验进行了验证。常用的校准技术需要投影仪校准的参数或放置在许多已知位置的参考平面。显然，引入投影仪校准会降低重建结果的准确性，将参考平面设置到许多已知位置是一个耗时的过程。因此，本文提出了一种没有投影机参数的重建方法，仅介绍了两个参考平面。子像素在两个参考平面上的点对点映射确定的一系列光束与相机模型确定的反射光束结合在一起，用于计算重建点的3D坐标。此外，利用束调整策略和互补的格雷码相移方法来确保准确性和稳定性。定性和定量比较以及实验测试证明了我们提出的方法的性能，并且测量精度可以达到约0.0454 mm。 （C）2016美国眼镜学会

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