Abstract
Temporal phase-unwrapping methods for fringe projection profilometry, mainly represented by the multi-frequency and multi-wavelength classes, are fundamental to recovering the 3D information from the continuous phase, also allowing measure discontinuities and isolated objects. In this paper, it is proposed a temporal phase unwrapping method for fringe projection profilometry. This method is specially designed to unwrap temporal phase sequences with equidistant long-time steps. As will be shown, this kind of temporal sampling allows increasing the accuracy of measurements. Simulated and real experimental results realized on a flat plate demonstrate the superiority of this proposal compared with leading already reported methods. Also, some experiments with complex objects are presented to demonstrate its applicability.
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