Robust phase recovery in temporal speckle pattern interferometry using a 3D directional wavelet transform

Abstract

We propose an approach based on a 3D directional wavelet transform to retrieve optical phase distributions in temporal speckle pattern interferometry. We show that this approach can effectively recover phase distributions in time series of speckle interferograms that are affected by sets of adjacent nonmodulated pixels. The performance of this phase retrieval approach is analyzed by introducing a temporal carrier in the outof-plane interferometer setup and assuming modulation loss and noise effects. The advantages and limitations of this approach are finally discussed.