Dr. Catherine E. Towers Profile

Dr. Catherine E. Towers

Associate Professor at Univ of Warwick

SPIE Involvement:

Author | Editor

Proceedings Article | 18 August 2018 Paper

Multi-wavelength phase unwrapping: a versatile tool for extending the measurement range, breaking the Nyquist limit, and encrypting optical communications

Konstantinos Falaggis, Ana Hiza Ramirez-Andrade, David Towers, Catherine Towers, Rosario Porras-Aguilar

Proceedings Volume 10749, 1074913 (2018) https://doi.org/10.1117/12.2321987

KEYWORDS: Interferometers, Interferometry, Phase measurement, Metrology, Phase interferometry, Optical communications

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Proceedings Article | 28 July 2017 Paper

Improvements in low-cost label-free QPI microscope for live cell imaging

C. Seniya, C. Towers, D. Towers

Proceedings Volume 10414, 104140F (2017) https://doi.org/10.1117/12.2282230

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Proceedings Article | 21 February 2017 Paper

Low cost label-free live cell imaging for biological samples

C. Seniya, C. Towers, D. Towers

Proceedings Volume 10074, 100741I (2017) https://doi.org/10.1117/12.2246680

KEYWORDS: Reconstruction algorithms, Live cell imaging, Microscopes, Phase shifting, Phase contrast, Phase modulation, Mirrors, Tissue optics, Phase shifts, Microscopy, Phase measurement

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Proceedings Article | 13 September 2012 Paper

Generalized theory of phase unwrapping: approaches and optimal wavelength selection strategies for multiwavelength interferometric techniques

Konstantinos Falaggis, David Towers, Catherine Towers

Proceedings Volume 8493, 84930O (2012) https://doi.org/10.1117/12.929874

KEYWORDS: CRTs, Interferometers, Interferometry, Reliability, Phase interferometry, Phase measurement, Fringe analysis, Optical metrology, Optimization (mathematics), Metrology

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SPIE Journal Paper | 27 February 2012

Robust color and shape measurement of full color artifacts by RGB fringe projection

Zonghua Zhang, Catherine Towers, David Towers

OE, Vol. 51, Issue 02, 021109, (February 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.2.021109

KEYWORDS: Fringe analysis, Modulation, RGB color model, Composites, Phase shift keying, Projection systems, CCD cameras, Phase shifts, Imaging systems, Digital Light Processing

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Proceedings Article | 3 November 2011 Paper

Unified theory of phase unwrapping approaches in multiwavelength interferometry

Konstantinos Falaggis, David Towers, Catherine Towers

Proceedings Volume 8011, 80117H (2011) https://doi.org/10.1117/12.902646

KEYWORDS: CRTs, Interferometry, Interferometers, Reliability, Phase interferometry, Phase measurement, Optical metrology, Optimization (mathematics), Metrology, Nickel

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Proceedings Article | 3 June 2011 Paper

Extended range metrology: an age old problem

Catherine Towers, David Towers, K. Falaggis

Proceedings Volume 8082, 80821P (2011) https://doi.org/10.1117/12.893283

KEYWORDS: Interferometry, Metrology, Phase measurement, Reliability, Fringe analysis, Error analysis, 3D metrology, Interferometers, Coherence (optics), Inspection

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Proceedings Article | 3 August 2010 Paper

Fast and flexible calibration of a phase-based 3-D imaging system by uneven fringe projection

Zonghua Zhang, Tong Guo, Sixiang Zhang, Xing Fu, Xiaotang Hu, Catherine Towers, David Towers

Proceedings Volume 7790, 77900D (2010) https://doi.org/10.1117/12.860066

KEYWORDS: Calibration, Fringe analysis, Imaging systems, Stereoscopy, CCD cameras, Projection systems, Cameras, Phase measurement, Distance measurement, Digital Light Processing

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Proceedings Article | 3 August 2010 Paper

Theoretical analysis and optimisation of the method of excess fractions for long-range metrology

Konstantinos Falaggis, David Towers, Catherine Towers

Proceedings Volume 7790, 779009 (2010) https://doi.org/10.1117/12.861177

KEYWORDS: Interferometers, Reliability, Metrology, Interferometry, Phase measurement, Tantalum, Systems modeling, Nickel, Performance modeling, Sensors

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Proceedings Article | 11 August 2008 Paper

Shape and colour measurement of colourful objects by fringe projection

Zonghua Zhang, Catherine Towers, David Towers

Proceedings Volume 7063, 70630N (2008) https://doi.org/10.1117/12.794561

KEYWORDS: Fringe analysis, Modulation, Phase shift keying, Chromatic aberrations, Projection systems, RGB color model, Imaging systems, Stereoscopy, 3D acquisition, 3D image processing

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Proceedings Article | 11 August 2008 Paper

A hybrid technique for ultra-high dynamic range interferometry

Konstantinos Falaggis, David Towers, Catherine Towers

Proceedings Volume 7063, 70630X (2008) https://doi.org/10.1117/12.795293

KEYWORDS: Fiber Bragg gratings, Interferometers, Interferometry, Metrology, Phase measurement, Signal detection, Distance measurement, Michelson interferometers, Reliability, Optical amplifiers

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Proceedings Article | 11 August 2008 Paper

Optimum wavelength selection for the method of excess fractions

Konstantinos Falaggis, David Towers, Catherine Towers

Proceedings Volume 7063, 70630V (2008) https://doi.org/10.1117/12.795211

KEYWORDS: Fiber Bragg gratings, Reliability, Interferometers, Interferometry, L band, Signal detection, Metrology, Optical amplifiers, Distance measurement, Ferroelectric materials

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Proceedings Article | 14 August 2006 Paper

Wavefront sensing for 3D particle metrology and velocimetry

N. Angarita-Jaimes, E. McGhee, M. Chennaoui, H. Campbell, S. Zhang, C. Towers, A. Greenaway, D. Towers

Proceedings Volume 6292, 62920K (2006) https://doi.org/10.1117/12.681561

KEYWORDS: Particles, Image segmentation, Image processing, Wavefronts, Wavefront sensors, 3D metrology, Metrology, Calibration, Imaging systems, 3D image processing

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Proceedings Article | 14 August 2006 Paper

Interferometric sensors for application in the bladder and the lower urinary tract

A. McCartney, M. Bialkowski, J. Barton, L. Stewart, C. Towers, W. MacPherson, R. Reuben, D. Towers

Proceedings Volume 6293, 62930L (2006) https://doi.org/10.1117/12.681566

KEYWORDS: Sensors, Silicon, Bladder, Interferometry, Coating, Signal detection, Fiber optics sensors, Spectroscopy, Ocean optics, Diagnostics

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Proceedings Article | 14 August 2006 Paper

Color fringe projection system based on optimum frequency selection

Zonghua Zhang, Catherine Towers, David Towers

Proceedings Volume 6292, 62920S (2006) https://doi.org/10.1117/12.679849

KEYWORDS: Projection systems, Fringe analysis, Chromatic aberrations, Digital Light Processing, Cameras, CCD cameras, Composites, RGB color model, Imaging systems, Optical filters

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Proceedings Article | 2 August 2004 Paper

Generalized multifrequency interferometric techniques for absolute phase measurement

Catherine Towers, David Towers, Julian Jones

Proceedings Volume 5531, (2004) https://doi.org/10.1117/12.562578

KEYWORDS: Reliability, Phase measurement, Interferometry, Projection systems, CRTs, Interferometers, Heterodyning, Ranging, CCD cameras, Computer simulations

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Proceedings Article | 9 June 2004 Paper

Generalized multifrequency selection for full-field interferometric shape measurement

Catherine Towers, David Towers, Julian Jones

Proceedings Volume 5502, (2004) https://doi.org/10.1117/12.566651

KEYWORDS: Interferometry, Reliability, CRTs, Phase measurement, Interferometers, Projection systems, Heterodyning, Computer simulations, CCD cameras, Sensors

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