Near real-time digital holographic imaging on conventional central processing unit

Vira R. Besaga; Anton V. Saetchnikov; Nils C. Gerhardt; Andreas Ostendorf; Martin R. Hofmann

doi:10.1117/12.2526112

21 June 2019 Near real-time digital holographic imaging on conventional central processing unit

Vira R. Besaga, Anton V. Saetchnikov, Nils C. Gerhardt, Andreas Ostendorf, Martin R. Hofmann

Author Affiliations +

Proceedings Volume 11056, Optical Measurement Systems for Industrial Inspection XI; 110562I (2019) https://doi.org/10.1117/12.2526112
Event: SPIE Optical Metrology, 2019, Munich, Germany

Abstract

In this paper we discuss a near real time digital holographic imaging algorithm achieving ∼4 fps operation speed on a common central processing unit. The hologram recording is performed in the off-axis geometry in the transmission mode. The algorithm follows a standard angular spectrum method routine and utilizes experimental calibration of the optical instrument for aberration correction. The main limiting factor is related to the size of the initial hologram and its Fourier transform (∼57% of the total execution duration). The performance of the approach is tested on different transparent and semi-transparent samples for reconstruction of sample topography and object in-depth allocation.

Citation Download Citation

Vira R. Besaga, Anton V. Saetchnikov, Nils C. Gerhardt, Andreas Ostendorf, and Martin R. Hofmann "Near real-time digital holographic imaging on conventional central processing unit", Proc. SPIE 11056, Optical Measurement Systems for Industrial Inspection XI, 110562I (21 June 2019); https://doi.org/10.1117/12.2526112

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