Mr. Alok Kumar Singh Profile

Alok Kumar Singh

at Institut für Technische Optik

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 24 May 2018 Presentation + Paper

Scatter-plate microscope: improved image acquisition

Stephan Ludwig, Alok Singh, Giancarlo Pedrini, Wolfgang Osten

Proceedings Volume 10677, 1067717 (2018) https://doi.org/10.1117/12.2306252

KEYWORDS: Deconvolution, Speckle pattern, Point spread functions, Filtering (signal processing), Microscopes, Image acquisition, Microscopy, Image quality, Image filtering, Scattering, Scattering media

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Proceedings Article | 23 February 2018 Presentation + Paper

Shaping the light for the investigation of depth-extended scattering media

W. Osten, K. Frenner, G. Pedrini, A. K. Singh, J. Schindler, M. Takeda

Proceedings Volume 10503, 1050318 (2018) https://doi.org/10.1117/12.2296582

KEYWORDS: Microscopes, Scattering, Point spread functions, Scattering media, Diffusers, Imaging systems, Speckle pattern, Objectives, Microscopy, Light scattering

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SPIE Journal Paper | 7 December 2017

Speckle-correlation imaging through scattering media with hybrid bispectrum-iteration algorithm

Meiling Zhou, Alok Kumar Singh, Giancarlo Pedrini, Wolfgang Osten, Junwei Min, Baoli Yao

OE, Vol. 56, Issue 12, 123102, (December 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.12.123102

KEYWORDS: Reconstruction algorithms, Speckle imaging, Image quality, Scattering media, Scattering, Speckle pattern, Speckle, Cameras, Laser scattering, Fourier transforms

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SPIE Journal Paper | 8 August 2016

Nanoscale measurement of in-plane and out-of-plane displacements of microscopic object by sensor fusion

Alok Kumar Singh, Giancarlo Pedrini, Xiang Peng, Wolfgang Osten

OE, Vol. 55, Issue 12, 121722, (August 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.12.121722

KEYWORDS: Digital holography, Digital image correlation, Sensors, Spiral phase plates, Wavefronts, Holograms, 3D metrology, Optical engineering, 3D image processing, Digital imaging

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Proceedings Article | 13 November 2014 Paper

Phase retrieval for optical metrology

Giancarlo Pedrini, Ahmad Faridian, Alok Kumar Singh, Wolfgang Osten

Proceedings Volume 9276, 927602 (2014) https://doi.org/10.1117/12.2071038

KEYWORDS: Digital holography, Microelectromechanical systems, Holography, Wavefronts, Phase retrieval, Laser drilling, Microscopy, Sensors, Optical metrology, Holograms

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Proceedings Article | 15 October 2012 Paper

Statistics of Fresnelet coefficients in PSI holograms

Marc Wilke, Alok Singh, Ahmad Faridian, Thomas Richter, Giancarlo Pedrini, Wolfgang Osten

Proceedings Volume 8499, 849904 (2012) https://doi.org/10.1117/12.929745

KEYWORDS: Holograms, Wavefronts, Wavelets, Holography, Digital holography, Sensors, Speckle, Statistical analysis, Wave propagation, Microscopy

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Showing 5 of 6 publications

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