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A 3D Measurement method based on Three frequencies PSP

机译:基于三频率PSP的3D测量方法

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This paper proposes a method of global phase unwrapping used in multi-frequency three-dimensional (3D) measurements. In this method, three kinds of optical information which change in accordance with trigonometric function (sine or cosine) to the objects. The optical information cycles is P_1, P_2 and P_3. Each waveform should 4-8 steps phase shifts. Then, calculate the phase value of each cycle. The composited phase value of two cycles and the final composited phase value of three cycles are calculated by image shift of each cycle. Finally, calculate the global phase value of each cycle based on the composited phase, thus, all the 3D coordinates of objects can be obtain after 3D reconstruction. The proposed method can solves the object surfaces color changing largely in 3D measurements. This method realizes high precision measurement without spray developer and achieves the protection of the environment.
机译:本文提出了一种用于多频三维(3D)测量的全局相位展开的方法。在该方法中,根据三角函数(正弦或余弦)改变对象的三种光学信息。光学信息周期是P_1,P_2和P_3。每个波形应该4-8步偏移。然后,计算每个循环的相位值。通过每个循环的图像移位来计算两个周期的复合相值和三个周期的最终组合相值。最后,基于计算阶段计算每个周期的全局相位值,因此,在3D重建之后可以获得对象的所有3D坐标。所提出的方法可以解决对象表面在很大程度上在3D测量中变色。该方法实现了高精度测量而无需喷涂开发人员,实现了对环境的保护。

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