Prof. Liang Zhao Profile

Prof. Liang Zhao

Associate Prof. at Central China Normal University(CCNU)

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 23 April 2019 Paper

A fast numerical algorithm for the 2D non-separable linear canonical transform based on a decomposition of the ABCD matrix

Liang Zhao, Min Wan, Qing Li, Sannuya Liu, John Sheridan, John Healy

Proceedings Volume 11030, 110301G (2019) https://doi.org/10.1117/12.2522839

KEYWORDS: Systems modeling, Digital Light Processing, Digital signal processing

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Proceedings Article | 23 April 2019 Paper

Convolution theorems for the linear canonical transforms

John Healy, Xiaolin Li, Min Wan, Liang Zhao

Proceedings Volume 11030, 110301A (2019) https://doi.org/10.1117/12.2520929

KEYWORDS: Convolution, Transform theory, Fourier transforms, Wigner distribution functions, Fractional fourier transform, Analytical research, Optical correlators, Optical filters, Hybrid optics, Time-frequency analysis

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SPIE Journal Paper | 14 June 2017

Choice of optical system is critical for the security of double random phase encryption systems

Inbarasan Muniraj, Changliang Guo, Ra’ed Malallah, Derek Cassidy, Liang Zhao, James Ryle, John Healy, John Sheridan

OE, Vol. 56, Issue 06, 063103, (June 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.6.063103

KEYWORDS: Computer security, Optical authentication, Systems modeling, Computer programming, Optical image encryption, Image encryption

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Proceedings Article | 31 May 2017 Paper

Constraints to solve parallelogram grid problems in 2D non separable linear canonical transform

Liang Zhao, John Healy, Inbarasan Muniraj, Xiao-Guang Cui, Ra'ed Malallah, James Ryle, John Sheridan

Proceedings Volume 10233, 102331V (2017) https://doi.org/10.1117/12.2265862

KEYWORDS: Digital holography, Systems modeling, Signal analyzers, Digital Light Processing, Digital signal processing, Holograms, Fourier transforms, Data modeling, Radium, Data conversion, Analytics, Electronics engineering, Solar energy

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Proceedings Article | 16 May 2017 Presentation + Paper

Investigating nonlinear distortion in the photopolymer materials

Ra'ed Malallah, Derek Cassidy, Inbarasan Muniraj, Liang Zhao, James Ryle, John Sheridan

Proceedings Volume 10228, 1022805 (2017) https://doi.org/10.1117/12.2263749

KEYWORDS: Photopolymers, Waveguides, Light wave propagation, Laser beam propagation, Refractive index, Distortion, Diffraction, Polymer multimode waveguides, Photorefractive polymers, Polymers, 3D modeling, Photopolymer media

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Proceedings Article | 15 May 2017 Paper

Sparsity based terahertz reflective off-axis digital holography

Min Wan, Inbarasan Muniraj, Ra'ed Malallah, Liang Zhao, James Ryle, Lu Rong, John Healy, Dayong Wang, John Sheridan

Proceedings Volume 10233, 102330T (2017) https://doi.org/10.1117/12.2264788

KEYWORDS: Microwave radiation, Infrared imaging, Infrared radiation, Electromagnetism, Continuous wave operation, Digital holography, Holograms, Holography, Terahertz radiation, Reconstruction algorithms, Terahertz sources, Carbon dioxide lasers, Imaging systems, Reflectivity, Millimeter wave imaging

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Proceedings Article | 15 May 2017 Presentation + Paper

2D non-separable linear canonical transform (2D-NS-LCT) based cryptography

Liang Zhao, Inbarasan Muniraj, John Healy, Ra'ed Malallah, Xiao-Guang Cui, James Ryle, John Sheridan

Proceedings Volume 10233, 102331B (2017) https://doi.org/10.1117/12.2265863

KEYWORDS: Computer security, Fourier transforms, Cryptography, Systems modeling, Signal processing, Fractional fourier transform, Holography, Image encryption, Optical image encryption, Information security, Image processing, Gyrators, Phase retrieval

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Proceedings Article | 1 May 2017 Presentation + Paper

Measuring optical phase digitally in coherent metrology systems

Damien Kelly, James Ryle, Liang Zhao, John Sheridan

Proceedings Volume 10220, 102200B (2017) https://doi.org/10.1117/12.2262485

KEYWORDS: Fourier transforms, Charge-coupled devices, Geometrical optics, Transform theory, Reconstruction algorithms, Digital holography, Metrology, Phase retrieval, Speckle metrology, Phase measurement, Optical testing, Refractive index, Biological research, Paraxial approximations, Holography

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SPIE Journal Paper | 28 March 2016

Iterative reconstruction of digital holograms from three intensity measurements

Liang Zhao, Yang Wu, Damien Kelly, John Sheridan

OE, Vol. 55, Issue 03, 033106, (March 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.3.033106

KEYWORDS: Digital holography, Phase retrieval, Holograms, Cameras, Image quality, Reconstruction algorithms, Phase shift keying, Wavefronts, Optical engineering, Modulation

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Proceedings Article | 22 September 2015 Paper

Reconstruction of digital holograms from three intensity measurements

Liang Zhao, Yang Wu, Chang-liang Guo, Damien Kelly, John Sheridan

Proceedings Volume 9599, 95992U (2015) https://doi.org/10.1117/12.2189474

KEYWORDS: Phase retrieval, Fourier transforms, Cameras, Digital holography, Image retrieval, Holograms, Reconstruction algorithms, Detection and tracking algorithms, Phase shifts, Image enhancement

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Proceedings Article | 22 September 2015 Paper

Additive discrete 1D linear canonical transform

Liang Zhao, John Healy, Chang-liang Guo, John Sheridan

Proceedings Volume 9599, 95992E (2015) https://doi.org/10.1117/12.2188229

KEYWORDS: Fourier transforms, Matrices, Wave propagation, Modeling, Digital signal processing, Digital holography, Direct methods, Communication engineering, Digital image processing, Electronics engineering

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Proceedings Article | 19 September 2014 Paper

Unitary implementation of the discrete two-dimensional non-separable linear canonical transform

Liang Zhao, John Healy, John Sheridan

Proceedings Volume 9216, 921610 (2014) https://doi.org/10.1117/12.2060984

KEYWORDS: Signal processing, System on a chip, Americium, Wigner distribution functions, Fractional fourier transform, Gyrators, Digital holography, Fourier transforms, Optical design, Wave propagation

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Proceedings Article | 1 May 2014 Paper

Sampling of the two dimensional non-separable linear canonical transform

Liang Zhao, John Healy, John Sheridan

Proceedings Volume 9131, 913112 (2014) https://doi.org/10.1117/12.2052549

KEYWORDS: Direct methods, Fourier transforms, Modeling, Communication engineering, Optical design, Electronics engineering, Systems modeling, Modulation, Optoelectronics, Solar energy

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Showing 5 of 13 publications

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