Paper
20 May 2016 Transport of intensity phase imaging using Bessel sources
Author Affiliations +
Abstract
Propagation-based phase contrast using the transport of intensity equation (TIE) allows rapid, deterministic phase retrieval from defocused images. For weakly attenuating objects, phase can be retrieved from a single image. However, the TIE suffers from significant low frequency artifacts due to enhancement of noise during phase retrieval. We demonstrate that by patterning the illumination source as approximately a modified Bessel function of the 2nd kind of zero order, quantitative phase can be imaged directly at the detector within a spatial frequency band. Outside of that band, Bessel sources still improve low frequency performance in phase retrieval.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jonathan C. Petruccelli and Tonmoy Chakraborty "Transport of intensity phase imaging using Bessel sources", Proc. SPIE 9870, Computational Imaging, 98700C (20 May 2016); https://doi.org/10.1117/12.2222157
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KEYWORDS
Spatial frequencies

Convolution

Sensors

Spatial light modulators

Fourier transforms

Phase measurement

Cameras

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