TY - GEN
T1 - Removal of monotonically increasing or decreasing phase ambiguity in retrieved phase by Riesz transform method in digital interferometric techniques
AU - Tounsi, Yassine
AU - Kumar, Manoj
AU - Nassim, Abdelkrim
AU - Mendoza-Santoyo, Fernando
N1 - Publisher Copyright:
© SPIE. Downloading of the abstract is permitted for personal use only.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In this work, a method based on vortex operator, for removal of monotonically increasing or decreasing phase ambiguity in the retrieved phase by the Riesz transform method in digital interferometric techniques is presented. Since in digital interferometric techniques, the phase extraction methods and algorithms are essential because these techniques are being continuously employed in many scientific, industrial, and engineering applications to measure various physical parameters which are encoded as the phase of the fringe pattern. There exist many methods/algorithms for phase extraction from the fringe pattern such as temporal phase-shifting, spatial phase-shifting, fast Fourier transforms (FFT) method, wavelet transform, Hilbert transform etc. In recent years, phase extraction from a single fringe pattern by using the Riesz transform method is developed because of its several advantages. However, the retrieved phase by Riesz transform is affected by πshifts due to the lack of discrimination between positive and negative spatial frequencies. This problem could be resolved by using a vortex operator which filters the data in the frequency domain. We present here some simulated results demonstrating the removal of phase ambiguity in the retrieved phase by Riesz transform method.
AB - In this work, a method based on vortex operator, for removal of monotonically increasing or decreasing phase ambiguity in the retrieved phase by the Riesz transform method in digital interferometric techniques is presented. Since in digital interferometric techniques, the phase extraction methods and algorithms are essential because these techniques are being continuously employed in many scientific, industrial, and engineering applications to measure various physical parameters which are encoded as the phase of the fringe pattern. There exist many methods/algorithms for phase extraction from the fringe pattern such as temporal phase-shifting, spatial phase-shifting, fast Fourier transforms (FFT) method, wavelet transform, Hilbert transform etc. In recent years, phase extraction from a single fringe pattern by using the Riesz transform method is developed because of its several advantages. However, the retrieved phase by Riesz transform is affected by πshifts due to the lack of discrimination between positive and negative spatial frequencies. This problem could be resolved by using a vortex operator which filters the data in the frequency domain. We present here some simulated results demonstrating the removal of phase ambiguity in the retrieved phase by Riesz transform method.
KW - Digital holography
KW - Digital speckle pattern interferometry
KW - Hilbert transform
KW - Phase retrieval
KW - Riesz transform
UR - http://www.scopus.com/inward/record.url?scp=85076717169&partnerID=8YFLogxK
U2 - 10.1117/12.2525078
DO - 10.1117/12.2525078
M3 - Conference contribution
AN - SCOPUS:85076717169
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Measurement Systems for Industrial Inspection XI
A2 - Lehmann, Peter
A2 - Osten, Wolfgang
A2 - Goncalves, Armando Albertazzi
PB - SPIE
T2 - Optical Measurement Systems for Industrial Inspection XI 2019
Y2 - 24 June 2019 through 27 June 2019
ER -