Prof. Andrew Robert Harvey Profile

Prof. Andrew Robert Harvey

Chair in Experimental Physics at Univ of Glasgow

SPIE Involvement:

Senior status | Conference Program Committee | Author

Publications (56)

PROCEEDINGS ARTICLE | February 19, 2018

Spectral autofluorescence imaging of the retina for drusen detection

Proc. SPIE. 10474, Ophthalmic Technologies XXVIII

KEYWORDS: Eye, Retina, In vivo imaging, Retinal scanning, Auto-fluorescence imaging

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SPIE Journal Paper | November 2, 2017

Combined high contrast and wide field of view in the scanning laser ophthalmoscope through dual detection of light paths

Carles, Guillem , Muyo, Gonzalo , van Hemert, Jano , Harvey, Andrew

JBO Vol. 22 Issue 11

KEYWORDS: Scanning laser ophthalmoscopy, Confocal microscopy, Retina, Monte Carlo methods, Eye models, Light scattering, Tissue optics, Signal to noise ratio, Eye, 3D modeling

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PROCEEDINGS ARTICLE | October 6, 2017

The simplicity, complexity, and benefits of multi-aperture imaging in the thermal infrared

Proc. SPIE. 10438, Emerging Imaging and Sensing Technologies for Security and Defence II

KEYWORDS: Long wavelength infrared, Infrared imaging, Super resolution, Imaging systems, Cameras, Sensors, Calibration, Multispectral imaging, Infrared radiation, Spatial resolution

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PROCEEDINGS ARTICLE | February 22, 2017

Scheimpflug multi-aperture Fourier ptychography: coherent computational microscope with gigapixels/s data acquisition rates using 3D printed components

Proc. SPIE. 10076, High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management II

KEYWORDS: Microscopes, Diffraction, Light emitting diodes, Computational imaging, Imaging systems, Lenses, Cameras, Sensors, Microscopy, 3D modeling, Data acquisition, Detector arrays, Phase imaging

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PROCEEDINGS ARTICLE | February 15, 2017

Minimally invasive optical biopsy for oximetry

Proc. SPIE. 10040, Endoscopic Microscopy XII

KEYWORDS: Tissues, Imaging systems, Blood vessels, Oxygen, Hypoxia, Biopsy, Inflammation, Multispectral imaging, In vivo imaging, Tissue optics, Oximetry

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PROCEEDINGS ARTICLE | September 23, 2015

3D imaging and ranging in a snapshot

Proc. SPIE. 9630, Optical Systems Design 2015: Computational Optics

KEYWORDS: Point spread functions, Imaging systems, Stereoscopy, Image segmentation, Microscopy, Spatial light modulators, Image quality, Deconvolution, 3D image processing, Ranging

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PROCEEDINGS ARTICLE | September 23, 2015

High-resolution microscopy with low-resolution objectives: correcting phase aberrations in Fourier ptychography

Proc. SPIE. 9630, Optical Systems Design 2015: Computational Optics

KEYWORDS: Light emitting diodes, Cameras, Sensors, Image processing, Microscopy, Image restoration, Image resolution, Objectives, Reconstruction algorithms, Lawrencium

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PROCEEDINGS ARTICLE | September 23, 2015

Computational imaging: the improved and the impossible

Proc. SPIE. 9626, Optical Systems Design 2015: Optical Design and Engineering VI

KEYWORDS: Point spread functions, Super resolution, Computational imaging, Imaging systems, Cameras, Sensors, Image restoration, Modulation transfer functions, Optical aberrations, Optics manufacturing

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SPIE Journal Paper | March 10, 2014

Light path-length distributions within the retina

Rodmell, Paul , Crowe, John , Gorman, Alistair , Harvey, Andrew , Muyo, Gonzalo , Mordant, David , McNaught, Andrew , Morgan, Stephen

JBO Vol. 19 Issue 03

KEYWORDS: Sensors, Monte Carlo methods, Photons, Retina, Oxygen, Eye, Scattering, Absorption, Light scattering, Imaging systems

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PROCEEDINGS ARTICLE | March 3, 2014

Development of a widefield phantom eye for retinal optical coherence tomography

Proc. SPIE. 8945, Design and Performance Validation of Phantoms Used in Conjunction with Optical Measurement of Tissue VI

KEYWORDS: Eye, Calibration, Optical coherence tomography, Retina, Crystals, Manufacturing, Distortion, Scanning laser ophthalmoscopy, Optics manufacturing, Eye models

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PROCEEDINGS ARTICLE | October 24, 2012

A novel snapshot polarimetric imager

Proc. SPIE. 8541, Electro-Optical and Infrared Systems: Technology and Applications IX

KEYWORDS: Staring arrays, Prisms, Beam splitters, Polarization, Visualization, Imaging systems, Wave plates, Polarimetry, Turbulence, Photonic integrated circuits

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PROCEEDINGS ARTICLE | October 5, 2011

First video rate imagery from a 32-channel 22-GHz aperture synthesis passive millimetre wave imager

Proc. SPIE. 8188, Millimetre Wave and Terahertz Sensors and Technology IV

KEYWORDS: Imaging systems, Video, Lamps, Receivers, Near field, Synthetic apertures, Antennas, Temperature metrology, Visibility, Phase shifts

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PROCEEDINGS ARTICLE | September 8, 2011

Control of optical aberrations with coded apertures

Proc. SPIE. 8165, Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems

KEYWORDS: Monochromatic aberrations, Point spread functions, Optical design, Modulation, Imaging systems, Image quality, Modulation transfer functions, Coded apertures, Optical aberrations, Destructive interference

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PROCEEDINGS ARTICLE | September 9, 2010

Fidelity comparison of phase masks for hybrid imaging

Proc. SPIE. 7652, International Optical Design Conference 2010

KEYWORDS: Optical transfer functions, Optical design, Imaging systems, Spatial frequencies, Image restoration, Phase shift keying, Digital imaging, Modulation transfer functions, Tolerancing, Filtering (signal processing)

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PROCEEDINGS ARTICLE | August 28, 2010

Achieving the potential of hybrid imaging systems

Proc. SPIE. 7818, Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems II

KEYWORDS: Point spread functions, Image compression, Phase modulation, Imaging systems, Image restoration, Wavefronts, Phase shift keying, Image quality, Modulation transfer functions, Tolerancing

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PROCEEDINGS ARTICLE | August 13, 2010

Real-time SWIR hyperspectral imaging with polarimetric capability

Proc. SPIE. 7812, Imaging Spectrometry XV

KEYWORDS: Target detection, Hyperspectral imaging, Short wave infrared radiation, IRIS Consortium, Detection and tracking algorithms, Sensors, Image processing, Infrared radiation, Commercial off the shelf technology, Prototyping

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PROCEEDINGS ARTICLE | August 22, 2009

Optimality of pupil-phase profiles for increasing the defocus tolerance of hybrid digital-optical imaging systems

Proc. SPIE. 7429, Novel Optical Systems Design and Optimization XII

KEYWORDS: Signal to noise ratio, Optical design, Phase modulation, Modulation, Imaging systems, Spatial frequencies, Image restoration, Phase shift keying, Tolerancing, Filtering (signal processing)

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PROCEEDINGS ARTICLE | August 22, 2009

A technique to remove image artefacts in optical systems with wavefront coding

Proc. SPIE. 7429, Novel Optical Systems Design and Optimization XII

KEYWORDS: Signal to noise ratio, Optical transfer functions, Point spread functions, Image compression, Cameras, Image restoration, Wavefronts, Image analysis, Gaussian filters, Image filtering

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PROCEEDINGS ARTICLE | October 2, 2008

Compact and light-weight digital beam-forming passive millimetre-wave imagers

Proc. SPIE. 7117, Millimetre Wave and Terahertz Sensors and Technology

KEYWORDS: Oscillators, Imaging systems, Image processing, Receivers, Heterodyning, Synthetic apertures, Antennas, Spatial resolution, Radio astronomy, Passive millimeter wave sensors

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PROCEEDINGS ARTICLE | October 2, 2008

The principles and roles of hybrid optical/digital codecs in imaging

Proc. SPIE. 7113, Electro-Optical and Infrared Systems: Technology and Applications V

KEYWORDS: Thermography, Optical transfer functions, Digital image processing, Imaging systems, Image restoration, Wavefronts, Image quality, Zoom lenses, Modulation transfer functions, Hybrid optics

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PROCEEDINGS ARTICLE | September 27, 2008

Wavefront-coded zoom lens with a single moving element

Proc. SPIE. 7100, Optical Design and Engineering III

KEYWORDS: Optical components, Optical transfer functions, Sensors, Image processing, Image restoration, Wavefronts, Lens design, Image quality, Zoom lenses, Optical aberrations

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PROCEEDINGS ARTICLE | September 27, 2008

Implementation of a wavefront coded imaging system using a spatial light modulator

Proc. SPIE. 7100, Optical Design and Engineering III

KEYWORDS: Phase modulation, Modulation, Imaging systems, Calibration, Image processing, Wavefronts, Phase shift keying, Polarizers, Spatial light modulators, Modulation transfer functions

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PROCEEDINGS ARTICLE | September 11, 2008

Digital image processing as an integral component of optical design

Proc. SPIE. 7061, Novel Optical Systems Design and Optimization XI

KEYWORDS: Thermography, Point spread functions, Optical design, Digital image processing, Imaging systems, Spatial frequencies, Image processing, Image restoration, Image quality, Modulation transfer functions

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PROCEEDINGS ARTICLE | September 11, 2008

Miniaturization and simplification of zoom lenses using wavefront coding

Proc. SPIE. 7061, Novel Optical Systems Design and Optimization XI

KEYWORDS: Optical components, Optical transfer functions, Optical design, Imaging systems, Sensors, Wavefronts, Lens design, Aspheric lenses, Zoom lenses, Optical aberrations

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PROCEEDINGS ARTICLE | November 7, 2007

Passive millimetre wave digital beam-forming security imaging

Proc. SPIE. 6739, Electro-Optical Remote Sensing, Detection, and Photonic Technologies and Their Applications

KEYWORDS: Digital signal processing, Imaging systems, Calibration, Receivers, Monte Carlo methods, Near field, Digital imaging, Heterodyning, Antennas, Passive millimeter wave sensors

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PROCEEDINGS ARTICLE | July 18, 2007

New spectral imaging techniques for blood oximetry in the retina

Proc. SPIE. 6631, Novel Optical Instrumentation for Biomedical Applications III

KEYWORDS: Eye, IRIS Consortium, Imaging systems, Cameras, Blood, Retina, Imaging spectroscopy, Oxygen, Absorbance, Oximetry

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PROCEEDINGS ARTICLE | October 27, 2006

Spectral imaging of the retina

Proc. SPIE. 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine

KEYWORDS: Optical filters, Prisms, IRIS Consortium, Cameras, Retina, Imaging spectroscopy, Polarizers, Wave plates, Image filtering, Optical filtering

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PROCEEDINGS ARTICLE | September 29, 2006

Optimized thermal imaging with a singlet and pupil plane encoding: experimental realization

Proc. SPIE. 6395, Electro-Optical and Infrared Systems: Technology and Applications III

KEYWORDS: Thermography, Signal to noise ratio, Monochromatic aberrations, Point spread functions, Imaging systems, Germanium, Manufacturing, Image restoration, Computer programming, Modulation transfer functions

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PROCEEDINGS ARTICLE | October 12, 2005

High-performance thermal imaging with a singlet and pupil plane encoding

Proc. SPIE. 5987, Electro-Optical and Infrared Systems: Technology and Applications II

KEYWORDS: Signal to noise ratio, Infrared imaging, Monochromatic aberrations, Point spread functions, Imaging systems, Image restoration, Wavefronts, Computer programming, Modulation transfer functions, Personal protective equipment

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PROCEEDINGS ARTICLE | March 23, 2005

Spectral imaging in a snapshot

Proc. SPIE. 5694, Spectral Imaging: Instrumentation, Applications, and Analysis III

KEYWORDS: Optical filters, Prisms, IRIS Consortium, Imaging systems, Blood, Imaging spectroscopy, Polarizers, Wave plates, Image filtering, Optical filtering

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PROCEEDINGS ARTICLE | March 17, 2005

High-speed close-range photogrammetry for dynamic shape measurement

Proc. SPIE. 5580, 26th International Congress on High-Speed Photography and Photonics

KEYWORDS: Imaging systems, Cameras, Calibration, Error analysis, Digital cameras, 3D modeling, Photogrammetry, 3D metrology, Motion models, 3D image processing

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PROCEEDINGS ARTICLE | December 8, 2004

Optical field encryption for secure transmission of data

Proc. SPIE. 5614, Advanced Free-Space Optical Communications Techniques and Technologies

KEYWORDS: Mirrors, Optical design, Modulation, Phase shift keying, Free space, Data transmission, Telecommunications, Signal processing, Free space optics, Free space optical communications

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PROCEEDINGS ARTICLE | December 8, 2004

Image analysis for object detection in millimetre-wave images

Proc. SPIE. 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology

KEYWORDS: Image processing algorithms and systems, Extremely high frequency, Statistical analysis, Detection and tracking algorithms, Imaging systems, Sensors, Image segmentation, Image processing, Image acquisition, Algorithm development

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PROCEEDINGS ARTICLE | December 6, 2004

Imaging spectrometry at visible and infrared wavelengths using image replication

Proc. SPIE. 5612, Electro-Optical and Infrared Systems: Technology and Applications

KEYWORDS: Optical filters, Prisms, IRIS Consortium, Imaging systems, Imaging spectroscopy, Polarizers, Wave plates, Image filtering, Infrared radiation, Optical filtering

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PROCEEDINGS ARTICLE | December 6, 2004

Wavefront coding for athermalization of infrared imaging systems

Proc. SPIE. 5612, Electro-Optical and Infrared Systems: Technology and Applications

KEYWORDS: Thermography, Signal to noise ratio, Infrared imaging, Point spread functions, Imaging systems, Image processing, Image restoration, Wavefronts, Modulation transfer functions, Temperature metrology

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PROCEEDINGS ARTICLE | July 29, 2004

Modeling of light propagation in retinal tissue

Proc. SPIE. 5486, ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics

KEYWORDS: Veins, Tissues, Scattering, Retina, Particles, Diffusion, Light scattering, Monte Carlo methods, Tissue optics, Absorption

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PROCEEDINGS ARTICLE | September 30, 2003

Amplitude and phase filters for mitigation of defocus and third-order aberrations

Proc. SPIE. 5249, Optical Design and Engineering

KEYWORDS: Monochromatic aberrations, Optical transfer functions, Optical filters, Imaging systems, Spatial frequencies, Wavefronts, Phase shift keying, Image filtering, Modulation transfer functions, Tolerancing

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PROCEEDINGS ARTICLE | July 2, 2003

High-throughput snapshot spectral imaging in two dimensions

Proc. SPIE. 4959, Spectral Imaging: Instrumentation, Applications, and Analysis II

KEYWORDS: Hyperspectral imaging, IRIS Consortium, Imaging systems, Sensors, Imaging spectroscopy, Polarizers, Wave plates, Detector arrays, Image filtering, Optical filtering

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PROCEEDINGS ARTICLE | November 8, 2002

Snapshot foveal hyperspectral imager

Proc. SPIE. 4816, Imaging Spectrometry VIII

KEYWORDS: Signal to noise ratio, Optical fibers, Hyperspectral imaging, Imaging systems, Sensors, Calibration, Multiplexing, Spectral resolution, Charge-coupled devices, Fiber couplers

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PROCEEDINGS ARTICLE | November 8, 2002

Birefringent Fourier-transform imaging spectrometer

Proc. SPIE. 4816, Imaging Spectrometry VIII

KEYWORDS: Signal to noise ratio, Mirrors, Prisms, Modulation, Polarization, Interferometers, Sensors, Calibration, Spectroscopy, Fourier transforms

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PROCEEDINGS ARTICLE | November 8, 2002

Hyperspectral imaging for the detection of retinal diseases

Proc. SPIE. 4816, Imaging Spectrometry VIII

KEYWORDS: Signal to noise ratio, Hyperspectral imaging, Optical filters, Eye, Veins, Retina, Fourier transforms, Imaging spectroscopy, Arteries, Retinal scanning

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Hyperspectral imaging (HSI) shows great promise for the detection and classification of several diseases, particularly in the fields of "optical biopsy" as applied to oncology, and functional retinal imaging in ophthalmology. In this paper, we discuss the application of HSI to the detection of retinal diseases and technological solutions that address some of the fundamental difficulties of spectral imaging within the eye. HSI of the retina offers a route to non-invasively deduce biochemical and metabolic processes within the retina. For example it shows promise for the mapping of retinal blood perfusion using spectral signatures of oxygenated and deoxygenated hemoglobin. Compared with other techniques using just a few spectral measurements, it offers improved classification in the presence of spectral cross-contamination by pigments and other components within the retina. There are potential applications for this imaging technique in the investigation and treatment of the eye complications of diabetes, and other diseases involving disturbances to the retinal, or optic-nerve-head circulation. It is well known that high-performance HSI requires high signal-to-noise ratios (SNR) whereas the application of any imaging technique within the eye must cope with the twin limitations of the small numerical aperture provided by the entrance pupil to the eye and the limit on the radiant power at the retina. We advocate the use of spectrally-multiplexed spectral imaging techniques (the traditional filter wheel is a traditional example). These approaches enable a flexible approach to spectral imaging, with wider spectral range, higher SNRs and lower light intensity at the retina than could be achieved using a Fourier-transform (FT) approach. We report the use of spectral imaging to provide calibrated spectral albedo images of healthy and diseased retinas and the use of this data for screening purposes. These images clearly demonstrate the ability to distinguish between oxygenated and deoxygenated hemoglobin using spectral imaging and this shows promise for the early detection of various retinopathies.

PROCEEDINGS ARTICLE | September 4, 2002

Primary aberrations alleviated with phase pupil filters

Proc. SPIE. 4768, Novel Optical Systems Design and Optimization V

KEYWORDS: Monochromatic aberrations, Point spread functions, Optical filters, Imaging systems, Lenses, Wavefronts, Solids, Image enhancement, Tolerancing, Optics manufacturing

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PROCEEDINGS ARTICLE | December 26, 2001

Image replication with diffractive structures

Proc. SPIE. 4438, Physics, Theory, and Applications of Periodic Structures in Optics

KEYWORDS: Diffraction, Monochromatic aberrations, Point spread functions, Optical design, Holographic optical elements, Holography, Multiplexing, Optical aberrations, Binary data, Diffraction gratings

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PROCEEDINGS ARTICLE | December 10, 2001

Wavefront coding for aberration compensation in thermal imaging systems

Proc. SPIE. 4442, Novel Optical Systems Design and Optimization IV

KEYWORDS: Thermography, Signal to noise ratio, Optical transfer functions, Atrial fibrillation, Imaging systems, Spatial frequencies, Wavefronts, Photomasks, Modulation transfer functions, Focus stacking

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PROCEEDINGS ARTICLE | July 2, 2001

Signal-to-noise analysis of various imaging systems

Proc. SPIE. 4259, Biomarkers and Biological Spectral Imaging

KEYWORDS: Signal to noise ratio, Statistical analysis, Interferometers, Sensors, Error analysis, Spectrometers, Electrons, Lamps, Interference (communication), Electronic filtering

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PROCEEDINGS ARTICLE | November 15, 2000

Technology options for imaging spectrometry

Proc. SPIE. 4132, Imaging Spectrometry VI

KEYWORDS: Signal to noise ratio, Imaging systems, Cameras, Sensors, Spectrometers, Fourier transforms, Multiplexing, Spectral resolution, Imaging spectrometry, Distributed interactive simulations

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PROCEEDINGS ARTICLE | October 31, 2000

Prospects for mm-wave aperture synthesis from spaceborne and aerial platforms

Proc. SPIE. 4091, Imaging Technology and Telescopes

KEYWORDS: Unmanned aerial vehicles, Spatial frequencies, Sensors, Calibration, Receivers, Synthetic apertures, Antennas, Radiometry, Optical correlators, Visibility

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PROCEEDINGS ARTICLE | December 21, 1998

Millimeter-wave aperture synthesis for remote sensing of the Earth

Proc. SPIE. 3498, Sensors, Systems, and Next-Generation Satellites II

KEYWORDS: Fluctuations and noise, Calibration, Quartz, Receivers, Synthetic apertures, Antennas, Phased arrays, Radiometry, Spatial resolution, Optical correlators

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PROCEEDINGS ARTICLE | December 7, 1998

Optical propagation through low-level turbulence

Proc. SPIE. 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II

KEYWORDS: Astronomy, Wavefront sensors, Wavefronts, Adaptive optics, Optical testing, Wave propagation, Turbulence, Scintillation, Wavefront distortions, Atmospheric propagation

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PROCEEDINGS ARTICLE | November 13, 1998

Electronic beam steering for passive millimeter-wave imaging

Proc. SPIE. 3465, Millimeter and Submillimeter Waves IV

KEYWORDS: Staring arrays, Modulation, Imaging systems, Calibration, Receivers, Multiplexing, Signal processing, Antennas, Radiometry, Optical correlators

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PROCEEDINGS ARTICLE | August 21, 1998

Beam-steering technologies for real-time passive millimeter-wave imaging

Proc. SPIE. 3378, Passive Millimeter-Wave Imaging Technology II

KEYWORDS: Staring arrays, Switches, Modulation, Imaging systems, Calibration, Wavefronts, Receivers, Multiplexing, Antennas, Radiometry

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PROCEEDINGS ARTICLE | June 18, 1998

Channeled spectrum interrogation of an all-fibre broadband interferometric differential strain sensor

Proc. SPIE. 3483, European Workshop on Optical Fibre Sensors

KEYWORDS: Optical fibers, Interferometers, Sensors, Calibration, Spectroscopy, Interferometry, Fiber optics sensors, Charge-coupled devices, Phase measurement, Environmental sensing

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PROCEEDINGS ARTICLE | June 27, 1997

Optical up-conversion for passive millimeter-wave imaging

Proc. SPIE. 3064, Passive Millimeter-Wave Imaging Technology

KEYWORDS: Optical fibers, Diffraction, Modulation, Signal attenuation, Calibration, Modulators, Synthetic apertures, Antennas, Optical correlators, Signal detection

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PROCEEDINGS ARTICLE | August 30, 1993

Suppression of coherence effects in the measurement of mm wave absorption in the JET plasma

Proc. SPIE. 2104, 18th International Conference on Infrared and Millimeter Waves

KEYWORDS: Optical filters, Modulation, Waveguides, Antennas, Electronic filtering, Signal detection, Tellurium, Electrochemical etching, Plasma, Absorption

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PROCEEDINGS ARTICLE | October 1, 1991

A 140 GHz quasi-optical notch filter

Proc. SPIE. 1576, 16th International Conference on Infrared and Millimeter Waves

KEYWORDS: Optical filters, Beam splitters, Fabry–Perot interferometers, Resonators, Waveguides, Scattering, Signal attenuation, Reflectivity, Linear filtering, Velocity measurements

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