Dr. Michael J. Cree Profile

Dr. Michael J. Cree

at Univ of Waikato

SPIE Involvement:

Author

Publications (22)

SPIE Journal Paper | 24 November 2015

Resolving multiple propagation paths in time of flight range cameras using direct and global separation methods

Refael Whyte, Lee Streeter, Michael Cree, Adrian Dorrington

OE, Vol. 54, Issue 11, 113109, (November 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.11.113109

KEYWORDS: Cameras, Modulation, Phase measurement, Scattering, Light sources, Phase shift keying, Distance measurement, Projection systems, Optical engineering, Error analysis

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Proceedings Article | 21 June 2015 Paper

Extracting the MESA SR4000 calibrations

Sean Charleston, Adrian Dorrington, Lee Streeter, Michael Cree

Proceedings Volume 9528, 95280S (2015) https://doi.org/10.1117/12.2183654

KEYWORDS: Calibration, Cameras, Sensors, Phase shift keying, Modulation, Distortion, Data acquisition, Distance measurement, Demodulation, Range imaging

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Proceedings Article | 12 March 2013 Paper

Analysis of weighting of normals for spherical harmonic cross-correlation

Robert Larkins, Michael Cree, Adrian Dorrington

Proceedings Volume 8650, 86500D (2013) https://doi.org/10.1117/12.2008434

KEYWORDS: Spherical lenses, Binary data, Image registration, Imaging systems, Optical spheres, Fourier transforms, Chromium, 3D modeling, Image segmentation, Image processing

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SPIE Journal Paper | 21 May 2012

Image processing for three-dimensional scans generated by time-of-flight range cameras

Holger Schöner, Volkmar Wieser, Bernhard Moser, Frank Bauer, Bettina Heise, Adrian Dorrington, Andrew Payne, Michael Cree

JEI, Vol. 21, Issue 2, 023012, (May 2012) https://doi.org/10.1117/12.10.1117/1.JEI.21.2.023012

KEYWORDS: Cameras, Wavelets, Image processing, Anisotropic diffusion, 3D image processing, Denoising, Modulation, 3D scanning, Image segmentation, Visualization

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Proceedings Article | 10 February 2012 Paper

Closed-form inverses for the mixed pixel/multipath interference problem in AMCW lidar

John Godbaz, Michael Cree, Adrian Dorrington

Proceedings Volume 8296, 829618 (2012) https://doi.org/10.1117/12.909778

KEYWORDS: Signal attenuation, Modulation, LIDAR, Reflectivity, Backscatter, Phase shift keying, Fourier transforms, Reconstruction algorithms, Cameras, Signal to noise ratio

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Proceedings Article | 30 January 2012 Paper

Analysis of binning of normals for spherical harmonic cross-correlation

Robert Larkins, Michael Cree, Adrian Dorrington

Proceedings Volume 8290, 82900L (2012) https://doi.org/10.1117/12.909466

KEYWORDS: Spherical lenses, Clouds, Optical spheres, Aluminium phosphide, Fourier transforms, Error analysis, Chromium, 3D modeling, Image registration, Imaging systems

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Proceedings Article | 21 June 2011 Paper

Illumination waveform optimization for time-of-flight range imaging cameras

A. Payne, A. Dorrington, M. Cree

Proceedings Volume 8085, 80850D (2011) https://doi.org/10.1117/12.889399

KEYWORDS: Modulation, Image sensors, Demodulation, Cameras, Phase measurement, Range imaging, Phase shift keying, Light sources, Light emitting diodes, Phase shifts

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Proceedings Article | 21 June 2011 Paper

A power-saving modulation technique for time-of-flight range imaging sensors

Richard Conroy, Adrian Dorrington, Andrew Payne, Rainer Künnemeyer, Michael Cree

Proceedings Volume 8085, 808506 (2011) https://doi.org/10.1117/12.889729

KEYWORDS: Modulation, Sensors, Range imaging, Phase shift keying, Phase measurement, Image sensors, Cameras, Capacitance, Electronics, Distance measurement

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Proceedings Article | 27 January 2011 Paper

Separating true range measurements from multi-path and scattering interference in commercial range cameras

A. Dorrington, J. Godbaz, M. Cree, A. Payne, L. Streeter

Proceedings Volume 7864, 786404 (2011) https://doi.org/10.1117/12.876586

KEYWORDS: Cameras, Modulation, Calibration, Phase shift keying, Scattering, 3D metrology, Light scattering, Phase measurement, Image sensors, 3D image processing

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Proceedings Article | 29 January 2010 Paper

Resolving depth-measurement ambiguity with commercially available range imaging cameras

Shane McClure, Michael Cree, Adrian Dorrington, Andrew Payne

Proceedings Volume 7538, 75380K (2010) https://doi.org/10.1117/12.838786

KEYWORDS: Cameras, Range imaging, Modulation, Reflectivity, Phase shift keying, Image segmentation, Edge detection, Data processing, Digital photography, Image processing

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Proceedings Article | 29 January 2010 Paper

Calibration and control of a robot arm using a range imaging camera

Cameron B. Kelly, Adrian Dorrington, Michael Cree, Andrew Payne

Proceedings Volume 7538, 75380J (2010) https://doi.org/10.1117/12.838784

KEYWORDS: Calibration, Cameras, Range imaging, Imaging systems, Machine vision, Robotics, 3D metrology, Servomechanisms, Image processing, Electronic imaging

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Proceedings Article | 29 January 2010 Paper

Multiple range imaging camera operation with minimal performance impact

Refael Whyte, Andrew Payne, Adrian Dorrington, Michael Cree

Proceedings Volume 7538, 75380I (2010) https://doi.org/10.1117/12.838271

KEYWORDS: Modulation, Cameras, Phase measurement, Phase shift keying, Time of flight cameras, Light sources, Range imaging, Image sensors, Distance measurement, Sensors

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Proceedings Article | 27 January 2010 Paper

Blind deconvolution of depth-of-field limited full-field lidar data by determination of focal parameters

John Godbaz, Michael Cree, Adrian Dorrington

Proceedings Volume 7533, 75330B (2010) https://doi.org/10.1117/12.838553

KEYWORDS: Point spread functions, LIDAR, Deconvolution, Statistical analysis, Computational imaging, Electronic imaging, Current controlled current source, Imaging systems, Modulation, Image analysis

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Proceedings Article | 3 February 2009 Paper

Multiple return separation for a full-field ranger via continuous waveform modelling

John Godbaz, Michael Cree, Adrian Dorrington

Proceedings Volume 7251, 72510T (2009) https://doi.org/10.1117/12.805549

KEYWORDS: Modulation, Chlorine, Deconvolution, Light scattering, Ranging, Picosecond phenomena, Data modeling, Camera shutters, Statistical modeling, Phase shifts

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Proceedings Article | 19 January 2009 Paper

Range imager performance comparison in homodyne and heterodyne operating modes

Richard Conroy, Adrian Dorrington, Rainer Künnemeyer, Michael Cree

Proceedings Volume 7239, 723905 (2009) https://doi.org/10.1117/12.806139

KEYWORDS: Heterodyning, Homodyne detection, Modulation, Imaging systems, Sensors, Range imaging, Phase shift keying, Image sensors, Cameras, Clocks

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Proceedings Article | 19 January 2009 Paper

Characterization of modulated time-of-flight range image sensors

Andrew Payne, Adrian Dorrington, Michael Cree, Dale Carnegie

Proceedings Volume 7239, 723904 (2009) https://doi.org/10.1117/12.806007

KEYWORDS: Modulation, Image sensors, Sensors, Phase shift keying, Distance measurement, Range imaging, Light, Frequency modulation, Imaging systems, Phase measurement

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Proceedings Article | 29 February 2008 Paper

Reference beam method for source modulated Hadamard multiplexing

Lee Streeter, G. Robert Burling-Claridge, Michael Cree, Rainer Künnemeyer

Proceedings Volume 6816, 68160J (2008) https://doi.org/10.1117/12.766063

KEYWORDS: Signal to noise ratio, Multiplexing, Light sources, Computer programming, Spectroscopy, Light, Data acquisition, Modulation, Hyperspectral imaging, Imaging systems

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Proceedings Article | 26 February 2008 Paper

Video-rate or high-precision: a flexible range imaging camera

Adrian Dorrington, Michael Cree, Dale Carnegie, Andrew Payne, Richard Conroy, John Godbaz, Adrian Jongenelen

Proceedings Volume 6813, 681307 (2008) https://doi.org/10.1117/12.764752

KEYWORDS: Modulation, Cameras, Range imaging, Imaging systems, Phase shift keying, Heterodyning, Image resolution, Homodyne detection, Ranging, Phase measurement

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Proceedings Article | 26 February 2008 Paper

The effect of JPEG compression on automated detection of microaneurysms in retinal images

M. Cree, H. Jelinek

Proceedings Volume 6813, 68130M (2008) https://doi.org/10.1117/12.766276

KEYWORDS: Image compression, Image resolution, Sensors, Cameras, Image quality, Retinal scanning, Image processing, Eye, Retina, Angiography

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Proceedings Article | 25 February 2008 Paper

Improved linearity using harmonic error rejection in a full-field range imaging system

Andrew Payne, Adrian Dorrington, Michael Cree, Dale Carnegie

Proceedings Volume 6805, 68050D (2008) https://doi.org/10.1117/12.765930

KEYWORDS: Modulation, Phase shift keying, Receivers, Light sources, Phase measurement, Image intensifiers, Homodyne detection, Cameras, Range imaging, Data acquisition

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Proceedings Article | 29 January 2007 Paper

Heterodyne range imaging as an alternative to photogrammetry

Adrian Dorrington, Michael Cree, Dale Carnegie, Andrew Payne, Richard Conroy

Proceedings Volume 6491, 64910D (2007) https://doi.org/10.1117/12.703674

KEYWORDS: Calibration, Range imaging, Imaging systems, Cameras, Modulation, 3D metrology, 3D acquisition, Distance measurement, Photogrammetry, Ranging

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Proceedings Article | 2 February 2006 Paper

Toward 1-mm depth precision with a solid state full-field range imaging system

Adrian Dorrington, Dale Carnegie, Michael Cree

Proceedings Volume 6068, 60680K (2006) https://doi.org/10.1117/12.641980

KEYWORDS: Modulation, Cameras, Imaging systems, Image intensifiers, Phase shift keying, Ranging, Heterodyning, Camera shutters, Video, Signal to noise ratio

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