Prof. Jun Uozumi Profile

Prof. Jun Uozumi

Professor at Hokkai-Gakuen Univ

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 15 June 2020 Paper

Digital holographic microscopy using speckle patterns generated from a moving diffuser

Hideki Funamizu, Tatsuya Tokushima, Jun Uozumi, Yoshihisa Aizu

Proceedings Volume 11521, 115210W (2020) https://doi.org/10.1117/12.2573289

KEYWORDS: Digital holography, Speckle pattern, Diffusers, Speckle, Microscopy, Spatial resolution, Holograms, Holography, Resolution enhancement technologies, 3D image reconstruction

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Proceedings Article | 21 June 2019 Paper

Noise reduction of digital holography using speckle correlation properties in longitudinal direction

Hideki Funamizu, Jun Uozumi, Yoshihisa Aizu

Proceedings Volume 11056, 110563G (2019) https://doi.org/10.1117/12.2525457

KEYWORDS: Digital holography, 3D image reconstruction, Speckle, Holograms, Image sensors, Image quality, Digital recording, Image processing, Digital imaging, Denoising

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SPIE Journal Paper | 19 December 2018 Open Access

Analysis of blood coagulation process based on fractality and dynamic characteristic of laser speckle pattern

Naomichi Yokoi, Yoshihisa Aizu, Jun Uozumi

JBO, Vol. 24, Issue 03, 031018, (December 2018) https://doi.org/10.1117/12.10.1117/1.JBO.24.3.031018

KEYWORDS: Blood, Speckle pattern, Infrared radiation, Light sources, Absorption, Biological research, Fractal analysis, Light scattering, Speckle, Image processing

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Proceedings Article | 7 September 2018 Paper

Enhancing spatial resolution of two-wavelength digital holographic microscopy using speckle patterns generated from ring-slit apertures

Hideki Funamizu, Jun Uozumi, Yoshihisa Aizu

Proceedings Volume 10834, 108341I (2018) https://doi.org/10.1117/12.2319275

KEYWORDS: Digital holography, Speckle, 3D image reconstruction, Holograms, Spatial resolution, Speckle pattern, Resolution enhancement technologies, Microscopy, Holography, Diffusers

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Proceedings Article | 24 April 2018 Paper

Fractality of biospeckle pattern observed in blood coagulation process

Naomichi Yokoi, Yoshihisa Aizu, Jun Uozumi

Proceedings Volume 10711, 107111V (2018) https://doi.org/10.1117/12.2316721

KEYWORDS: Blood, Speckle pattern, Fractal analysis, Light sources, Speckle, Image processing, Systems engineering, Design for manufacturability, Manufacturing, Electronics

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Proceedings Article | 24 April 2018 Paper

Digital holographic microscopy using speckle illuminations and two-wavelength method

Hideki Funamizu, Yusei Onodera, Jun Uozumi, Yoshihisa Aizu

Proceedings Volume 10711, 1071116 (2018) https://doi.org/10.1117/12.2317061

KEYWORDS: Digital holography, Speckle, 3D image reconstruction, Holography, Microscopy, Spatial resolution

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Proceedings Article | 26 June 2017 Paper

Enhancement of spatial resolution in digital holographic microscopy using speckle field generated from ring-slit apertures

Hideki Funamizu, Yusei Onodera, Jun Uozumi, Yoshihisa Aizu

Proceedings Volume 10329, 103293H (2017) https://doi.org/10.1117/12.2269914

KEYWORDS: Resolution enhancement technologies, 3D image reconstruction, Image resolution, Digital holography, Holography, Microscopy, Speckle, Spatial resolution, Holograms

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Proceedings Article | 18 April 2017 Paper

Enhancing spatial resolution of digital holographic microscopy using speckle patterns generated from ring-slit apertures

Hideki Funamizu, Tan Qin Chen, Yusei Onodera, Jun Uozumi, Yoshihisa Aizu

Proceedings Volume 10251, 1025114 (2017) https://doi.org/10.1117/12.2269423

KEYWORDS: 3D image reconstruction, Objectives, Diffusers, Digital holography, Holography, Microscopy, Resolution enhancement technologies, Spatial resolution, Speckle pattern, Speckle

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Proceedings Article | 22 February 2011 Paper

Optical inter-satellite communication with dynamically reconfigurable optical device using Sn[sub]2[/sub]P[sub]2[/sub]S[sub]6[/sub] crystal

Kaori Nishimaki, Atsushi Okamoto, Tomohiro Fujita, Alexander Grabar, Masanori Takabayashi, Jun Uozumi, Akihisa Tomita, Yoshihisa Takayama

Proceedings Volume 7923, 79230N (2011) https://doi.org/10.1117/12.874428

KEYWORDS: Crystals, Phase conjugation, Reflectivity, Satellites, Telecommunications, Laser crystals, Satellite communications, Diffraction gratings, Optical communications, Receivers

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SPIE Journal Paper | 1 July 2008

Modified joint transform correlator using smoothed amplitude-modulated filter

Pitchaya Kaewkasi, Joewono Widjaja, Jun Uozumi

OE, Vol. 47, Issue 07, 077203, (July 2008) https://doi.org/10.1117/12.10.1117/1.2957043

KEYWORDS: Joint transforms, Optical correlators, Target detection, Optical filters, Optical engineering, Target recognition, Computer simulations, Spatial frequencies, Fourier transforms, Image filtering

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SPIE Journal Paper | 1 January 2008

Effects of threshold on multiple-target detection by using a modified amplitude-modulated joint transform correlator

PItchaya Kaewkasi, Joewono Widjaja, Jun Uozumi

OE, Vol. 47, Issue 01, 017206, (January 2008) https://doi.org/10.1117/12.10.1117/1.2835698

KEYWORDS: Target detection, Optical engineering, Optical correlators, Joint transforms, Computer simulations, 3D acquisition, Spatial frequencies, Signal attenuation, Computing systems, Fourier transforms

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Proceedings Article | 19 November 2003 Paper

Phase statistics of the speckle produced by power-law illuminated diffusers

Jun Uozumi

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.527484

KEYWORDS: Fractal analysis, Diffusers, Speckle, Computer simulations, Wavefronts, Solids, Interferometry, Optical simulations, Transmittance, Far-field diffraction

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Proceedings Article | 31 May 2002 Paper

Generation and properties of laser speckle with long correlation tails

Jun Uozumi

Proceedings Volume 4705, (2002) https://doi.org/10.1117/12.468998

KEYWORDS: Speckle pattern, Axicons, Bessel beams, Fractal analysis, Diffusers, Speckle, Computer simulations, Nondiffracting beams, Scattering, Wave propagation

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Proceedings Article | 5 February 2002 Paper

Fractality of optical fields scattered by power-law-illuminated diffusers

Jun Uozumi

Proceedings Volume 4607, (2002) https://doi.org/10.1117/12.455198

KEYWORDS: Fractal analysis, Diffusers, Correlation function, Speckle pattern, Speckle, Near field diffraction, Far-field diffraction, Scattering, Monte Carlo methods, Spatial filters

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Proceedings Article | 31 May 2001 Paper

Light scattering from fractal random media

Jun Uozumi

Proceedings Volume 4242, (2001) https://doi.org/10.1117/12.427747

KEYWORDS: Fractal analysis, Scattering, Particles, Speckle pattern, Light scattering, Multiple scattering, Diffusers, Backscatter, Correlation function, Speckle

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Proceedings Article | 18 November 1999 Paper

Generating random fractal fields by double-scattering process

Jun Uozumi

Proceedings Volume 3904, (1999) https://doi.org/10.1117/12.370419

KEYWORDS: Fractal analysis, Diffusers, Speckle pattern, Speckle, Correlation function, Far-field diffraction, Ions, Near field diffraction, Scattering, Acquisition tracking and pointing

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Proceedings Article | 19 July 1999 Paper

Influence of objects buried in highly dense media on angular correlations of the scattered intensity

Suguru Sangu, Takashi Okamoto, Jun Uozumi, Toshimitsu Asakura

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354951

KEYWORDS: Correlation function, Light scattering, Scattering, Numerical simulations, Solids, Fourier transforms, Control systems, Data hiding, Multiple scattering, Tumors

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Proceedings Article | 19 July 1999 Paper

Fractal speckles in diffraction regions and image plane

Jun Uozumi, K. Tsujino, E. Miyasaka, M. Ibrahim

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354767

KEYWORDS: Fractal analysis, Speckle pattern, Diffusers, Speckle, Diffraction, Far-field diffraction, Near field diffraction, Correlation function, Image filtering, Optical filters

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Proceedings Article | 7 May 1999 Paper

Numerical analysis of enhanced backscattering from random fractal media

Jun Uozumi, Takamitsu Saito

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347743

KEYWORDS: Fractal analysis, Particles, Scattering, Backscatter, Multiple scattering, Monte Carlo methods, Light scattering, Numerical analysis, Computer simulations, Scattering media

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Proceedings Article | 7 May 1999 Paper

Angular correlation properties of multiply scattered light in random media with buried objects

Suguru Sangu, Takashi Okamoto, Jun Uozumi, Toshimitsu Asakura

Proceedings Volume 3740, (1999) https://doi.org/10.1117/12.347787

KEYWORDS: Light scattering, Correlation function, Scattering, Numerical simulations, Fourier transforms, Diffusion, Solids, Multiple scattering, Biomedical optics, Optical storage

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Proceedings Article | 8 December 1997 Open Access

Optical reproduction of sounds from old phonographic wax cylinders

Takashi Nakamura, T. Ushizaka, Jun Uozumi, Toshimitsu Asakura

Proceedings Volume 3190, (1997) https://doi.org/10.1117/12.294398

KEYWORDS: Optics education, Geometrical optics, Diffraction, Fiber optics, Laser applications

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SPIE Journal Paper | 1 May 1994

Optical implementation of artificial synapses by means of the Wigner distribution approach

Joewono Widjaja, Jun Uozumi, Toshimitsu Asakura

OE, Vol. 33, Issue 05, (May 1994) https://doi.org/10.1117/12.10.1117/12.164603

KEYWORDS: Neurons, Diffractive optical elements, Neural networks, Wigner distribution functions, Holograms, Binary data, Detector arrays, Artificial neural networks, Optical components, Optical engineering

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Proceedings Article | 1 March 1991 Paper

Method for evaluating displacement of objects using the Wigner distribution function

Joewono Widjaja, Jun Uozumi, Toshimitsu Asakura

Proceedings Volume 1400, (1991) https://doi.org/10.1117/12.47845

KEYWORDS: Wigner distribution functions, Spatial frequencies, Fourier transforms, Speckle, Optical fabrication, Optical testing, Photography, Glasses, Speckle pattern, Transmittance

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