Research on 3D Reconstruction Method Based on Temporal Fourier Transform Profilometry

Fourier Transform Profilometry (FTP) and Phase Measurement Profilometry (PMP) are 3D surface measurement techniques that have been widely used, however, FTP has some defects, such as high requirement for space carrier frequency of projection fringe and easy loss of high-frequency components of measured object. High precision measurement based on PMP is difficult to realize dynamic measurement. However, Temporal Fourier Transform Profilometry (TFTP) can realize high-precision 3D reconstruction of dynamic objects. Therefore, this paper deeply explores the implementation process of TFTP method, it is proved that this method can retain the high-frequency components of the measured object to realize 3D surface reconstruction under the condition of low space carrier frequency projection. In addition, this paper discusses the influence of relevant parameters on the results of 3D reconstruction, and compares FTP method and TFTP method. On this basis, a measuring system is proposed, which is simple to construct and operate, and can quickly reconstruct the 3D shape of objects.