Dynyamic 3D profiling with fringe projection using least squares method and windowed Fourier filtering

We recently presented a method for dynamic phase retrieval in temporal speckle pattern interferometry using least squares method and windowed Fourier filtering. In this paper, we extend this method to dynamic 3D profiling with fringe projection as a novel alternative. The phase distributions of distorted fringe patterns are sequentially retrieved and automatically unwrapped. Since only one fringe pattern is required to reconstruct a profile at a time, the method is particularly suitable for dynamic measurement. Simulation and experimental examples are presented to validate the method.

► A new method for dynamic 3D profiling with fringe projection is presented. ► Only one fringe pattern is required to reconstruct a profile at a time. ► The phase distributions are sequentially retrieved and automatically unwrapped. ► The method gives accurate results even when the local carrier frequency is low.