Dr. Kemao Qian Profile

Dr. Kemao Qian

Associate Professor at Nanyang Technological Univ

SPIE Involvement:

Publications (39)

SPIE Conference Volume | August 2, 2018

Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)

SPIE Conference Volume | November 6, 2017

Fifth International Conference on Optical and Photonics Engineering

SPIE Journal Paper | August 24, 2017

Windowed Fourier ridges as a spatial carrier phase-shifting algorithm

Agarwal, Nimisha , Kemao, Qian

OE Vol. 56 Issue 08

KEYWORDS: Phase shifts, Fringe analysis, Error analysis, Fourier transforms, Algorithm development, Optical engineering, Computer science, Computer engineering, Phase retrieval, Denoising

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PROCEEDINGS ARTICLE | June 26, 2017

Phase retrieval for high-speed 3D measurement using binary patterns with projector defocusing

Proc. SPIE. 10329, Optical Measurement Systems for Industrial Inspection X

KEYWORDS: Fluctuations and noise, Phase retrieval, Gaussian filters, 3D metrology, Projection systems, Phase measurement, Phase shifts

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PROCEEDINGS ARTICLE | June 13, 2017

Comparison between ternary and binary Gray-code-based phase unwrapping methods

Proc. SPIE. 10449, Fifth International Conference on Optical and Photonics Engineering

KEYWORDS: Fringe analysis, 3D metrology, Projection systems, Phase measurement, 3D scanning, Phase shifts

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PROCEEDINGS ARTICLE | June 13, 2017

A review of sensing technologies for small and large-scale touch panels

Proc. SPIE. 10449, Fifth International Conference on Optical and Photonics Engineering

KEYWORDS: Sensors, Matrices, Image processing, Image sensors, Signal processing, Reconstruction algorithms, Binary data

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PROCEEDINGS ARTICLE | February 10, 2017

Application of EMD in fringe analysis: new developments

Proc. SPIE. 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016)

KEYWORDS: Fringe analysis

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PROCEEDINGS ARTICLE | July 17, 2015

WFF-BM3D: a hybrid denoising scheme for fringe patterns

Proc. SPIE. 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015)

KEYWORDS: Optical filters, Fringe analysis, Digital filtering, Denoising, Fourier transforms, 3D metrology, Image filtering, Optical interferometry, Image denoising, 3D image processing

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SPIE Conference Volume | March 12, 2015

International Conference on Experimental Mechanics 2014

PROCEEDINGS ARTICLE | March 4, 2015

iFringe: a fringe analysis application for mobile smart devices

Proc. SPIE. 9302, International Conference on Experimental Mechanics 2014

KEYWORDS: Mobile devices, Human-machine interfaces, Fringe analysis, Optical signal processing, Cameras, Image processing, Fourier transforms, Image analysis, Image filtering, Phase shifts

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PROCEEDINGS ARTICLE | March 4, 2015

A comparison study of denoising techniques in fringe pattern analysis

Proc. SPIE. 9302, International Conference on Experimental Mechanics 2014

KEYWORDS: Optical filters, Fringe analysis, Image processing, Digital filtering, Denoising, Precision measurement, Image filtering, Optical interferometry, Filtering (signal processing), 3D image processing

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PROCEEDINGS ARTICLE | August 18, 2014

Links between fringe pattern analysis and digital image correlation: windowed, optimal, and tracking (WOT)

Proc. SPIE. 9203, Interferometry XVII: Techniques and Analysis

KEYWORDS: Staring arrays, Fringe analysis, Detection and tracking algorithms, Data modeling, Image processing, Fourier transforms, Speckle pattern, Digital image correlation, Phase shifts, Data analysis

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SPIE Press Book | August 2, 2013

Windowed Fringe Pattern Analysis

Kemao, Qian

SPIE Conference Volume | July 2, 2013

International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013)

PROCEEDINGS ARTICLE | June 22, 2013

Window size selection of windowed fourier ridges for phase discontinuity in quality-guided phase unwrapping

Proc. SPIE. 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013)

KEYWORDS: Nanotechnology, Optical filters, Fringe analysis, Fourier transforms, Interferometry, Interferometric synthetic aperture radar, Computer engineering, Tolerancing, Precision optics, Current controlled current source

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SPIE Journal Paper | May 4, 2012

Toward real-time virtual biopsy of oral lesions using confocal laser endomicroscopy interfaced with embedded computing

Thong, Patricia , Olivo, Malini , Bhuvaneswari, Ramaswamy , Tandjung, Stephanus , Movania, Muhammad , Chiew, Wei-Ming , Seah, Hock-Soon , Lin, Feng , Qian, Kemao , Soo, Khee-Chee

JBO Vol. 17 Issue 5

KEYWORDS: Confocal microscopy, Biopsy, Luminescence, 3D image processing, Tongue, 3D acquisition, Sodium, Volume rendering, Computing systems, Field programmable gate arrays

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PROCEEDINGS ARTICLE | June 9, 2011

Toward three-dimensional virtual biopsy of oral lesions through the development of a confocal endomicroscope interfaced with embedded computing

Proc. SPIE. 8086, Advanced Microscopy Techniques II

KEYWORDS: Confocal microscopy, Visualization, Imaging systems, Luminescence, Field programmable gate arrays, Biopsy, Volume rendering, Endomicroscopy, Sodium, 3D image processing

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PROCEEDINGS ARTICLE | November 17, 2010

Comparison of two-dimensional phase retrieval methods from single interference fringe pattern

Proc. SPIE. 7851, Information Optics and Optical Data Storage

KEYWORDS: Fringe analysis, Wavelet transforms, Aerospace engineering, Speckle, Reflectivity, Fourier transforms, Transform theory, Phase retrieval, 3D metrology, Phase measurement

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SPIE Conference Volume | March 26, 2010

Fourth International Conference on Experimental Mechanics

PROCEEDINGS ARTICLE | August 25, 2009

Links between regularized phase tracking/windowed Fourier ridges for fringe pattern analysis and digital image correlation

Proc. SPIE. 7375, ICEM 2008: International Conference on Experimental Mechanics 2008

KEYWORDS: Fringe analysis, Detection and tracking algorithms, Aerospace engineering, Speckle, Image processing, Error analysis, Interferometry, Data processing, Digital image correlation, Optimization (mathematics)

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PROCEEDINGS ARTICLE | July 13, 2009

Detection and diagnosis of human oral cancer using hypericin fluorescence endoscopic imaging interfaced with embedded computing

Proc. SPIE. 7380, Photodynamic Therapy: Back to the Future

KEYWORDS: Confocal microscopy, Endoscopy, Cancer, Tumors, Tissues, Imaging systems, Luminescence, Computing systems, Embedded systems, 3D visualizations

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PROCEEDINGS ARTICLE | October 3, 2008

General structure for real-time fringe pattern preprocessing and implementation of median filter and average filter on FPGA

Proc. SPIE. 7155, Ninth International Symposium on Laser Metrology

KEYWORDS: Fringe analysis, Clocks, Image processing, Digital filtering, Computing systems, Fourier transforms, Field programmable gate arrays, LCDs, Algorithm development, Filtering (signal processing)

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PROCEEDINGS ARTICLE | October 3, 2008

Frequency-shifting method for phase retrieval from fringe patterns

Proc. SPIE. 7155, Ninth International Symposium on Laser Metrology

KEYWORDS: Mirrors, Fringe analysis, Detection and tracking algorithms, Fourier transforms, Interferometry, Demodulation, Computer simulations, Phase retrieval, Computer engineering, Phase shifts

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PROCEEDINGS ARTICLE | October 3, 2008

Faster window Fourier transform filters for fringe pattern analysis

Proc. SPIE. 7155, Ninth International Symposium on Laser Metrology

KEYWORDS: Optical filters, Fringe analysis, Speckle, Digital filtering, Fourier transforms, Interferometry, Interference (communication), Phase interferometry, Convolution, Computer engineering

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PROCEEDINGS ARTICLE | August 11, 2008

Filtering-based phase unwrapping

Proc. SPIE. 7063, Interferometry XIV: Techniques and Analysis

KEYWORDS: Optical filters, Wavelet transforms, Detection and tracking algorithms, Digital filtering, Wavelets, Fourier transforms, Interference (communication), Optical interferometry, Phase measurement, Electronic filtering

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SPIE Journal Paper | July 1, 2005

Two-dimensional windowed Fourier frames for noise reduction in fringe pattern analysis

Kemao, Qian , Soon, Seah Hock

OE Vol. 44 Issue 07

KEYWORDS: Fringe analysis, Denoising, Speckle, Optical filters, Fourier transforms, Optical engineering, Wavelets, Interference (communication), Digital filtering, Linear filtering

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PROCEEDINGS ARTICLE | April 12, 2005

Determination of phase-shift from two fringe patterns using windowed Fourier ridges

Proc. SPIE. 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics

KEYWORDS: Fringe analysis, Fourier transforms, Interferometry, Phase interferometry, Convolution, Computer engineering, Mechanical engineering, Product engineering, Experimental mechanics, Phase shifts

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PROCEEDINGS ARTICLE | August 2, 2004

A simple phase unwrapping approach using windowed Fourier filtering

Proc. SPIE. 5531, Interferometry XII: Techniques and Analysis

KEYWORDS: Optical filters, Fringe analysis, Fourier transforms, Image filtering, Optical interferometry, Convolution, Computer engineering, Algorithm development, Mechanical engineering, Product engineering

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SPIE Journal Paper | July 1, 2004

Windowed Fourier transform method for demodulation of carrier fringes

Kemao, Qian

OE Vol. 43 Issue 07

KEYWORDS: Fourier transforms, Demodulation, Fringe analysis, Optical metrology, Interference (communication), Electronic filtering, Computer engineering, Control systems, Convolution, Optical filters

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SPIE Journal Paper | October 1, 2003

Filtering the complex field in phase shifting interferometry

Qian, Kemao , Seah, Hock Soon , Asundi, Anand

OE Vol. 42 Issue 10

KEYWORDS: Fourier transforms, Fringe analysis, Phase interferometry, Phase shifts, Phase retrieval, Optical filters, Speckle, Interference (communication), Computer engineering, Mechanical engineering

SPIE Journal Paper | September 1, 2003

Noise suppression in spatial carrier phase shifting method

Qian, Kemao , Soon, Seah Hock , Asundi, Anand

OE Vol. 42 Issue 09

KEYWORDS: Bandpass filters, Phase shifting, Fringe analysis, Linear filtering, Fourier transforms, Computer simulations, Optical filters, Convolution, Computer engineering, Mechanical engineering

SPIE Journal Paper | June 1, 2003

Algorithm for directly retrieving the phase difference: a generalization

Qian, Kemao , Asundi, Anand

OE Vol. 42 Issue 06

KEYWORDS: Phase measurement, Phase shifting, Fringe analysis, Fourier transforms, Phase shifts, Speckle, Interferometry, LCDs, Interferometers, Sensors

PROCEEDINGS ARTICLE | April 29, 2003

Evaluation of binary speckle correlation

Proc. SPIE. 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002

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PROCEEDINGS ARTICLE | May 29, 2002

Advanced image processing method applied to speckle fringe pattern based on wavelet transform

Proc. SPIE. 4537, Third International Conference on Experimental Mechanics

KEYWORDS: Fringe analysis, Wavelet transforms, Speckle, Image processing, Crystals, Distortion, Linear filtering, Computer simulations, Image filtering, Nonlinear filtering

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PROCEEDINGS ARTICLE | May 29, 2002

Weighted phase unwrapping utilizing intensity modulation analysis for phase-shifting profilometry

Proc. SPIE. 4537, Third International Conference on Experimental Mechanics

KEYWORDS: Fringe analysis, Modulation, Mechanics, Phase shift keying, Shape analysis, Phase measurement, Mechanical engineering, Binary data, Phase shifts, Bandpass filters

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PROCEEDINGS ARTICLE | October 30, 2001

Fourier transform method for phase retrieving from fringe patterns with carrier: window selection

Proc. SPIE. 4596, Advanced Photonic Sensors and Applications II

KEYWORDS: Photodetectors, Optical filters, Fringe analysis, Mechanics, Sensors, Fourier transforms, Computer simulations, Optical metrology, Image filtering

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PROCEEDINGS ARTICLE | October 30, 2001

Comparison of some phase-shifting algorithms with a phase step of pi/2

Proc. SPIE. 4596, Advanced Photonic Sensors and Applications II

KEYWORDS: Phase shifting, Detection and tracking algorithms, Sensors, Error analysis, Phase shift keying, Computer simulations, Phase interferometry, Algorithm development, Phase shifts, Algorithms

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PROCEEDINGS ARTICLE | October 30, 2001

Fourier transform method for phase retrieving from fringe patterns without carrier: beware its theoretical error

Proc. SPIE. 4596, Advanced Photonic Sensors and Applications II

KEYWORDS: Photodetectors, Fringe analysis, Phase shifting, Spatial frequencies, Sensors, Error analysis, Fourier transforms, Optical metrology, Image filtering, Bandpass filters

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PROCEEDINGS ARTICLE | May 7, 1999

Novel image processing method applied to speckle fringe pattern based on the wavelet transform

Proc. SPIE. 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99)

KEYWORDS: Fringe analysis, Wavelet transforms, Speckle, Image processing, Digital filtering, Wavelets, Computer simulations, Speckle pattern, Image filtering, Binary data

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