Abstract
Fringe projection three-dimensional (3D) measurement technique is an effective technique to measure 3D shape of objects, in which phase retrieval is an important procedure. To overcome the need of pre-filtering process in the existing single-frame methods, this paper proposes a novel method to extract phase distribution solely from one-frame fringe pattern without pre-filtering, which reduces its complexity and retains more phase details. The proposed method consists of two stages. Firstly, the Hilbert transform is applied to one-frame fringe pattern to generate another frame of fringe pattern. Secondly, the phase distribution is calculated based on Lissajous Ellipse Fitting (LEF) technique by using original fringe pattern and the Hilbert transformed fringe pattern. The results provides a practically efficient methodology for single frame phase reconstruction, which shows potential useful means for reconstructing object in rapid measurement.
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