72 - Speckle Noise Reduction in DSPI Fringes using Multi-Directional Total Variation

Mustapha Bahich
Presented in: #ICMCS20
7th International Conference on Multimedia Computing and Systems
Online, October 1-3, 2020

Presented by:
Mustapha Bahich
Physics department, Faculty of sciences Meknes, Moulay Ismail University,
Meknes, Morocco

Abstract:
In this work, we present a multi-directional total variation method to reduce the high-frequency speckle noise in order to prepare the digital speckle pattern interferometry fringes for demodulation. In this method, the local fringe directional information is involved to increase the sensitivity of the variational regularization to the spatially varying directional intensity changes. Once the speckle noise is removed from the fringe pattern, the fringes are demodulated using directional wavelet based phase retrieval algorithm. The extracted phase can be used for the three-dimensional inspection."