Prof. Damien P. Kelly Profile

Prof. Damien P. Kelly

at National University of Ireland, Dublin

SPIE Involvement:

Conference Program Committee | Author

Publications (34)

PROCEEDINGS ARTICLE | May 1, 2017

Temporal speckle correlations for optical alignment

Proc. SPIE. 10220, Dimensional Optical Metrology and Inspection for Practical Applications VI

KEYWORDS: Statistical analysis, Speckle, Scattering, Light scattering, Inspection, Laser scattering, Optical inspection, Speckle pattern, Diffusers, 3D metrology, Optical alignment, Laser optics

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PROCEEDINGS ARTICLE | May 1, 2017

Measuring optical phase digitally in coherent metrology systems

Proc. SPIE. 10220, Dimensional Optical Metrology and Inspection for Practical Applications VI

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

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PROCEEDINGS ARTICLE | June 1, 2016

Space/time averaging of scattered coherence functions

Proc. SPIE. 9867, Three-Dimensional Imaging, Visualization, and Display 2016

KEYWORDS: Statistical analysis, Speckle, Sensors, Remote sensing, Transform theory, Wave propagation, 3D metrology, Charge-coupled devices, Geometrical optics, Electroluminescent displays

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SPIE Journal Paper | March 28, 2016

Iterative reconstruction of digital holograms from three intensity measurements

Zhao, Liang , Wu, Yang , Kelly, Damien , Sheridan, John

OE Vol. 55 Issue 03

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

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PROCEEDINGS ARTICLE | September 22, 2015

Reconstruction of digital holograms from three intensity measurements

Proc. SPIE. 9599, Applications of Digital Image Processing XXXVIII

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

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PROCEEDINGS ARTICLE | September 9, 2015

Measuring refractive index of glass by using two captures under speckle field illumination

Proc. SPIE. 9598, Optics and Photonics for Information Processing IX

KEYWORDS: Diffraction, Refractive index, Metrology, Statistical analysis, Speckle, Glasses, Speckle pattern, Diffusers, Free space optics, Charge-coupled devices

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PROCEEDINGS ARTICLE | June 5, 2014

Fluctuations in the intensity read out of CCD/CMOS arrays in digital holographic setups: an experimental investigation

Proc. SPIE. 9117, Three-Dimensional Imaging, Visualization, and Display 2014

KEYWORDS: Light sources, Holograms, Holography, Digital holography, Speckle, Cameras, Sensors, CCD cameras, Charge-coupled devices, Optical benches

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PROCEEDINGS ARTICLE | September 30, 2013

A theoretical comparison of Fresnel based digital holography and phase retrieval from the transport of intensity equation

Proc. SPIE. 8833, Tribute to H. John Caulfield

KEYWORDS: Holography, Digital holography, Imaging systems, Spatial frequencies, Fourier transforms, Wave plates, Phase retrieval, Charge-coupled devices, Phase measurement, Electroluminescent displays

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PROCEEDINGS ARTICLE | May 5, 2012

Speckle: two new metrology techniques

Proc. SPIE. 8429, Optical Modelling and Design II

KEYWORDS: Refractive index, Metrology, Statistical analysis, Speckle, Cameras, Glasses, Light scattering, Free space, Speckle pattern, Diffusers

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PROCEEDINGS ARTICLE | September 14, 2011

Experimental exploration of the correlation coefficient of static speckles in Fresnel configuration

Proc. SPIE. 8133, Dimensional Optical Metrology and Inspection for Practical Applications

KEYWORDS: Gaussian beams, Statistical analysis, Imaging systems, Speckle, Cameras, 3D modeling, Speckle pattern, Diffusers, 3D metrology, Correlation function

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PROCEEDINGS ARTICLE | May 11, 2011

Digital holography and phase retrieval: a theoretical investigation

Proc. SPIE. 8074, Holography: Advances and Modern Trends II

KEYWORDS: Holograms, Holography, 3D image reconstruction, Digital holography, Imaging systems, Spatial frequencies, Cameras, Fourier transforms, Phase retrieval, Reconstruction algorithms

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SPIE Journal Paper | September 1, 2009

Resolution limits in practical digital holographic systems

Kelly, Damien , Hennelly, Bryan , Pandey, Nitesh , Naughton, Thomas , Rhodes, William

OE Vol. 48 Issue 09

KEYWORDS: Cameras, Digital holography, Imaging systems, Spatial frequencies, Holograms, Holography, Optical engineering, 3D image reconstruction, Image resolution, Systems modeling

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PROCEEDINGS ARTICLE | August 27, 2009

Speed up of Fresnel transforms for digital holography using pre-computed chirp and GPU processing

Proc. SPIE. 7442, Optics and Photonics for Information Processing III

KEYWORDS: Holograms, Holography, 3D image reconstruction, Digital holography, Cameras, Graphics processing units, Matrices, Transform theory, Quantization, Reconstruction algorithms

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SPIE Journal Paper | February 1, 2009

Systematic errors of an optical encryption system due to the discrete values of a spatial light modulator

Monaghan, David , Gopinathan, Unnikrishnan , Kelly, Damien , Naughton, Thomas , Sheridan, John

OE Vol. 48 Issue 02

KEYWORDS: Spatial light modulators, Image encryption, Quantization, Fourier transforms, Positron emission tomography, Image processing, Computer programming, Polarization, Optical engineering, Error analysis

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PROCEEDINGS ARTICLE | September 3, 2008

A practical guide to digital holography and generalized sampling

Proc. SPIE. 7072, Optics and Photonics for Information Processing II

KEYWORDS: Holograms, Holography, 3D image reconstruction, Digital holography, Imaging systems, Spatial frequencies, Cameras, Fourier transforms, Image quality, Reconstruction algorithms

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PROCEEDINGS ARTICLE | September 2, 2008

An alignment technique based on the speckle correlation properties of Fresnel transforming optical systems

Proc. SPIE. 7068, Optical System Alignment and Tolerancing II

KEYWORDS: Signal to noise ratio, Statistical analysis, Speckle, Cameras, Error analysis, Digital cameras, Free space, Free space optics, Optical alignment, Channel projecting optics

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PROCEEDINGS ARTICLE | February 14, 2008

Advances in fiber delivery of ultrashort pulses at 800 nm

Proc. SPIE. 6871, Solid State Lasers XVII: Technology and Devices

KEYWORDS: Ultrafast phenomena, Mirrors, Prisms, Photonic crystal fibers, Femtosecond phenomena, Dispersion, Single mode fibers, Fiber lasers, Terahertz radiation, Sapphire lasers

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PROCEEDINGS ARTICLE | September 25, 2007

Fast numerical algorithm for ultrashort THz pulse diffraction

Proc. SPIE. 6697, Advanced Signal Processing Algorithms, Architectures, and Implementations XVII

KEYWORDS: Confocal microscopy, Ultrafast phenomena, Diffraction, Spectroscopy, Error analysis, Fourier transforms, Gaussian pulse, Numerical analysis, Near field diffraction, Terahertz radiation

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PROCEEDINGS ARTICLE | September 24, 2007

Speckle reduction from digital holograms by simulating temporal incoherence

Proc. SPIE. 6696, Applications of Digital Image Processing XXX

KEYWORDS: Holograms, Holography, 3D image reconstruction, Digital holography, Imaging systems, Speckle, Fourier transforms, Computer simulations, Optical simulations, Charge-coupled devices

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PROCEEDINGS ARTICLE | August 14, 2006

Speckle photography: linear canonical transform metrology systems in mixed domains with apertures

Proc. SPIE. 6292, Interferometry XIII: Techniques and Analysis

KEYWORDS: Metrology, Imaging systems, Speckle, Lenses, Cameras, Photography, Fourier transforms, Free space, Control systems, Free space optics

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SPIE Journal Paper | August 1, 2006

Analytical and numerical analysis of linear optical systems

Kelly, Damien , Hennelly, Bryan , Rhodes, William , Sheridan, John

OE Vol. 45 Issue 08

KEYWORDS: Numerical analysis, Wigner distribution functions, Spatial frequencies, Diffraction, Optical engineering, Fourier transforms, Direct methods, Systems modeling, Algorithm development, Fractional fourier transform

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PROCEEDINGS ARTICLE | April 25, 2006

Speckle-based metrology systems and linear canonical transform photography in mixed domains

Proc. SPIE. 6187, Photon Management II

KEYWORDS: Optical components, Metrology, Speckle, Photography, Fourier transforms, Wavefronts, Free space optics, Charge-coupled devices, Motion measurement, Spherical lenses

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PROCEEDINGS ARTICLE | April 25, 2006

Numerical analysis of systematic errors in an optical encryption system

Proc. SPIE. 6187, Photon Management II

KEYWORDS: Image encryption, Digital holography, Modulation, Image processing, Fourier transforms, Computer programming, CCD cameras, Spatial light modulators, Quantization, Jones vectors

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PROCEEDINGS ARTICLE | September 15, 2005

Phase retrieval using theoretically unitary discrete fractional Fourier transform

Proc. SPIE. 5908, Optical Information Systems III

KEYWORDS: Detection and tracking algorithms, Spatial frequencies, Matrices, Fourier transforms, Amplifiers, Phase retrieval, Signal processing, Fractional fourier transform, Algorithm development, Wigner distribution functions

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PROCEEDINGS ARTICLE | September 10, 2005

Numerical implementation of the Fresnel transform, and its application in linear optical systems

Proc. SPIE. 5908, Optical Information Systems III

KEYWORDS: Diffraction, Modulation, Spatial frequencies, Fourier transforms, Free space, Numerical analysis, Free space optics, Fractional fourier transform, Algorithm development, Wigner distribution functions

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PROCEEDINGS ARTICLE | August 18, 2005

Linear Canonical Transforms, and Speckle Based Metrology

Proc. SPIE. 5879, Recent Developments in Traceable Dimensional Measurements III

KEYWORDS: Metrology, Digital signal processing, Digital photography, Speckle, Matrices, Fourier transforms, Wavefronts, Transform theory, Motion measurement, Spherical lenses

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PROCEEDINGS ARTICLE | June 8, 2005

Applications of spatial light modulators in optical signal processing systems

Proc. SPIE. 5827, Opto-Ireland 2005: Photonic Engineering

KEYWORDS: Image encryption, Optical signal processing, Digital holography, Free space, Transform theory, Spatial light modulators, Data processing, Signal processing, Quantization, Wigner distribution functions

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PROCEEDINGS ARTICLE | June 8, 2005

Scaled optical Fourier transform in cylindrical coordinates

Proc. SPIE. 5827, Opto-Ireland 2005: Photonic Engineering

KEYWORDS: Diffraction, Optical signal processing, Seaborgium, Visualization, Fourier transforms, Wavefronts, Wave propagation, Electronics engineering, Spherical lenses, Plasma display panels

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PROCEEDINGS ARTICLE | June 3, 2005

Linear canonical transforms and speckle based metrology

Proc. SPIE. 5826, Opto-Ireland 2005: Optical Sensing and Spectroscopy

KEYWORDS: Metrology, Surface plasmons, Speckle, Photography, Fourier transforms, Free space, Transform theory, Free space optics, Motion measurement, Systems modeling

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PROCEEDINGS ARTICLE | October 22, 2004

3D scaled optical Fourier transform: diffraction effects

Proc. SPIE. 5557, Optical Information Systems II

KEYWORDS: Diffraction, Optical signal processing, Seaborgium, Fourier transforms, Fourier optics, Electronics engineering, Electrical engineering, Spherical lenses, Computer architecture, Plasma display panels

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PROCEEDINGS ARTICLE | October 22, 2004

Speckle correlation and the fractional Fourier transform

Proc. SPIE. 5557, Optical Information Systems II

KEYWORDS: Metrology, Imaging systems, Speckle, Cameras, Photography, Fourier transforms, Free space optics, Fractional fourier transform, Motion measurement, Commercial off the shelf technology

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PROCEEDINGS ARTICLE | September 1, 2004

Considering the effect of diffraction on the scaled optical Fourier transform

Proc. SPIE. 5456, Photon Management

KEYWORDS: Diffraction, Optical signal processing, Seaborgium, Error analysis, Fourier transforms, Wave propagation, Solids, Electronics engineering, Algorithm development, Spherical lenses

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PROCEEDINGS ARTICLE | December 31, 2003

Wigner optics and wave optics: fundamentals and practical applications

Proc. SPIE. 5182, Wave-Optical Systems Engineering II

KEYWORDS: Speckle, Photography, Fourier transforms, Differential equations, Holographic interferometry, Paraxial approximations, Motion measurement, Integral transforms, Wigner distribution functions, Lead

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PROCEEDINGS ARTICLE | December 31, 2003

Scaled optical Fourier transform: practical limitations

Proc. SPIE. 5182, Wave-Optical Systems Engineering II

KEYWORDS: Diffraction, Optical signal processing, Visualization, Error analysis, Fourier transforms, Solids, Electronics engineering, Algorithm development, Spherical lenses, Illumination engineering

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Showing 5 of 34 publications

Conference Committee Involvement (5)

Dimensional Optical Metrology and Inspection for Practical Applications VIII

14 April 2019 | Baltimore, Maryland, United States

Holography: Advances and Modern Trends

1 April 2019 | Prague, Czech Republic

Dimensional Optical Metrology and Inspection for Practical Applications VII

18 April 2018 | Orlando, Florida, United States

Holography: Advances and Modern Trends

24 April 2017 | Prague, Czech Republic

Dimensional Optical Metrology and Inspection for Practical Applications VI

13 April 2017 | Anaheim, California, United States

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