For three-dimensional (3-D) measurement of dynamic objects, a new three-part phase unwrapping algorithm is proposed. First, a novel fringe modulation degree threshold estimation method is proposed. Then, the unwrapped phase can be obtained by three segments. The first-segment is calculated by 2-D spacial phase unwrapping algorithm while the fringe modulation degree is within the threshold. The second-segment is calculated between two frames when their fringe modulation degree difference is within the threshold. The third-segment is calculated by a estimation method of 2π jump order. This method only need one wrapped phase to calculate the unwrapped phase. Simulations and experiments have proved the effectiveness of the proposed method.

中文翻译：

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用于动态物体 3D 测量的新型三部分相位展开算法


对于动态物体的三维（3-D）测量，提出了一种新的三部分相位展开算法。首先，提出了一种新颖的条纹调制度阈值估计方法。然后，可以通过三段来获得展开相位。当条纹调制度在阈值以内时，通过二维空间相位展开算法计算第一段。当两帧的条纹调制度差在阈值以内时，计算第二段。第三段采用2π跳阶估计方法计算。该方法只需要一个包裹相位即可计算展开相位。仿真和实验证明了该方法的有效性。