Prof. Qinghua O. Guo Profile

Prof. Qinghua O. Guo

at Univ of Wollongong

SPIE Involvement:

Author

Publications (26)

SPIE Journal Paper | 29 September 2022

Hformer: Hybrid convolutional neural network transformer network for fringe order prediction in phase unwrapping of fringe projection

Xinjun Zhu, Zhiqiang Han, Mengkai Yuan, Qinghua Guo, Hongyi Wang, Limei Song

OE, Vol. 61, Issue 09, 093107, (September 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.9.093107

KEYWORDS: Transformers, Computed tomography, Computer programming, Performance modeling, Convolutional neural networks, Neural networks, Fringe analysis, Data modeling, Optical engineering, 3D modeling

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SPIE Journal Paper | 17 August 2021

Phase unwrapping method combining dual-frequency heterodyne with dual complementary phase encoding

Limei Song, Xuewang Zhang, Haozhen Huang, Qinghua Guo, Yangang Yang, Xinjun Zhu

OE, Vol. 60, Issue 08, 085106, (August 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.8.085106

KEYWORDS: Heterodyning, Computer programming, Phase shifts, Clouds, Optical engineering, Reflectivity, Cameras, Error analysis, Metals, 3D modeling

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Proceedings Article | 12 April 2021 Presentation + Paper

A data fusion approach to improving moving object measurement using phase-shifting profilometry

Chengpu Duan, Jiangtao Xi, Jun Tong, Yanguang Yu, Qinghua Guo

Proceedings Volume 11732, 1173208 (2021) https://doi.org/10.1117/12.2591620

KEYWORDS: Phase shifts, Data fusion, Fringe analysis, Reflectivity, Motion measurement, Motion estimation, 3D metrology

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Proceedings Article | 12 April 2021 Presentation + Paper

Fringe pattern denoising based on robust principal component analysis

Yiwei Zhang, Jiangtao Xi, Jun Tong, Yanguang Yu, Qinghua Guo

Proceedings Volume 11732, 1173207 (2021) https://doi.org/10.1117/12.2591619

KEYWORDS: Fringe analysis, Denoising, Principal component analysis, Phase retrieval, Phase shifting, Image filtering, Fourier transforms, Electronic filtering

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Proceedings Article | 18 November 2019 Paper

Fringe projection profilometry for the 3D shape measurement of objects with three-dimensional movements

Chengpu Duan, Yiwei Zhang, Jiangtao Xi, Jun Tong, Yanguang Yu, Qinghua Guo

Proceedings Volume 11189, 111890Z (2019) https://doi.org/10.1117/12.2539194

KEYWORDS: 3D metrology, Fringe analysis, Motion estimation, Phase shifts, Motion analysis, Yield improvement, Computer simulations

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Proceedings Article | 18 November 2019 Paper

Improve 3D shape reconstruction with dual-camera measurement fusion

Yuewen Zhu, Qinghua Guo, Jiangtao Xi, Yanguang Yu, Jun Tong

Proceedings Volume 11189, 111890D (2019) https://doi.org/10.1117/12.2539362

KEYWORDS: 3D metrology, Stereo vision systems, Cameras, Imaging systems, Projection systems, 3D vision, Motion measurement

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Proceedings Article | 18 November 2019 Paper

A new method for fringe order error correction in fringe projection profilometry

Yiwei Zhang, Chengpu Duan, Jiangtao Xi, Jun Tong, Yanguang Yu, Qinghua Guo

Proceedings Volume 11189, 111890X (2019) https://doi.org/10.1117/12.2539216

KEYWORDS: 3D metrology, Digital filtering, Phase measurement, Fringe analysis, Reflectivity

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Proceedings Article | 12 November 2019 Paper

Effect of windowing on a sensing signal generated by self-mixing interferometry

Han Wang, Yuxi Ruan, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong

Proceedings Volume 11197, 111970F (2019) https://doi.org/10.1117/12.2542368

KEYWORDS: Interferometry, Signal generators, Signal processing, Semiconductor lasers, Laser interferometry, Modulation, Diodes, Mathematical modeling

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Proceedings Article | 12 November 2019 Paper

Achieving high resolution measurement using laser diode operating at period one

Yuxi Ruan, Bairun Nie, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong, Zhuqiu Chen

Proceedings Volume 11197, 111970I (2019) https://doi.org/10.1117/12.2542592

KEYWORDS: Semiconductor lasers, Modulation, Laser resonators, Interferometry

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Proceedings Article | 16 October 2019 Paper

A fringe projection profilometry scheme based on embedded speckle patterns and robust principal component analysis

Yiwei Zhang, Jun Tong, Jiangtao Xi, Chengpu Duan, Yanguang Yu, Qinghua Guo, Lei Lu

Proceedings Volume 11205, 112052H (2019) https://doi.org/10.1117/12.2542261

KEYWORDS: Fringe analysis, Speckle pattern, Speckle, Principal component analysis, 3D metrology, Composites, Error analysis, Shape analysis, Superposition, Signal to noise ratio

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Proceedings Article | 16 October 2019 Paper

A method for dynamic 3D shape measurements based on multiple-shot FTP and motion compensation

Chengpu Duan, Jun Tong, Jiangtao Xi, Yiwei Zhang, Yanguang Yu, Qinghua Guo, Lei Lu

Proceedings Volume 11205, 112052J (2019) https://doi.org/10.1117/12.2542260

KEYWORDS: 3D metrology, Motion measurement, Fringe analysis, Cameras, Signal to noise ratio, Fourier transforms, 3D acquisition, 3D modeling

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SPIE Journal Paper | 22 January 2019

Three-dimensional measurement with reflection suppression based on high-dynamic range images

Limei Song, Yuan Ru, Yangang Yang, Qinghua Guo, Xinjun Zhu, Jiangtao Xi

JEI, Vol. 28, Issue 01, 013010, (January 2019) https://doi.org/10.1117/12.10.1117/1.JEI.28.1.013010

KEYWORDS: Image fusion, 3D metrology, 3D image processing, Calibration, Cameras, Clouds, High dynamic range imaging, Reflection, 3D image reconstruction, Image information entropy

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Proceedings Article | 6 November 2018 Paper

Profile measurement using a self-mixing laser diode

Han Wang, Yuxi Ruan, Lingzhi Cao, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong, Jitao Zhang

Proceedings Volume 10812, 1081211 (2018) https://doi.org/10.1117/12.2500739

KEYWORDS: Modulation, Semiconductor lasers, Interferometry, Algorithm development, Signal detection, Photodiodes, Phase measurement, Laser optics

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Proceedings Article | 6 November 2018 Paper

Influence of system bandwidth on self-mixing signal

Bin Liu, Yuxi Ruan, Lingzhi Cao, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong

Proceedings Volume 10812, 1081210 (2018) https://doi.org/10.1117/12.2500737

KEYWORDS: Signal detection, Linear filtering, Interferometry, Sensing systems, Semiconductor lasers

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Proceedings Article | 6 November 2018 Paper

Experimental study on simultaneously measuring Young's modulus and internal fraction using self-mixing system

Fei Xia, Bin Liu, Lingzhi Cao, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong

Proceedings Volume 10812, 1081212 (2018) https://doi.org/10.1117/12.2500741

KEYWORDS: Continuous wavelet transforms, Nondestructive evaluation, Interferometry, Signal analyzers, Wavelet transforms, Amplifiers, Data acquisition

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SPIE Journal Paper | 17 October 2018

Full-view three-dimensional measurement of complex surfaces

Limei Song, Yuan Ru, Yangang Yang, Qinghua Guo, Xinjun Zhu, Jiangtao Xi

OE, Vol. 57, Issue 10, 104106, (October 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.10.104106

KEYWORDS: 3D metrology, Calibration, Cameras, Clouds, 3D imaging standards, 3D modeling, 3D acquisition, Image registration, Optical engineering, Phase shift keying

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Proceedings Article | 1 November 2017 Paper

Integrated real-time measurement method of filament lamp dimension based on machine vision

Limei Song, Suqing Guo, Xinjun Zhu, Jiayan Wang, Qinghua Guo, Jiangtao Xi, Huaidong Yang

Proceedings Volume 10458, 1045807 (2017) https://doi.org/10.1117/12.2285258

KEYWORDS: Lamps, Machine vision

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SPIE Journal Paper | 5 October 2016

Eliminating influence of transient oscillations on a self-mixing interferometry

Zhenghao Liu, Yanguang Yu, Yuanlong Fan, Jiangtao Xi, Qinghua Guo, Jun Tong

OE, Vol. 55, Issue 10, 104102, (October 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.10.104102

KEYWORDS: Filtering (signal processing), Electronic filtering, Signal processing, Interferometry, Sensing systems, Stereolithography, Feedback signals, Nonlinear filtering, Linear filtering, Optical filters

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Proceedings Article | 8 October 2015 Paper

An efficient background modeling approach based on vehicle detection

Jia-yan Wang, Li-mei Song, Jiang-tao Xi, Qing-hua Guo

Proceedings Volume 9675, 96751A (2015) https://doi.org/10.1117/12.2199349

KEYWORDS: Laser applications, Detection and tracking algorithms, Data modeling, Evolutionary algorithms, Video, Algorithm development, Performance modeling, Visual process modeling, Machine vision, Image segmentation

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SPIE Journal Paper | 24 December 2014

Removing the impulsive noise contained in a self-mixing interferometry system using outlier detection

Yan Gao, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong, Sheng Tong

OE, Vol. 53, Issue 12, 124108, (December 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.12.124108

KEYWORDS: Interference (communication), Interferometry, Signal detection, Signal processing, Stereolithography, Distortion, Semiconductor lasers, Modulation, Optical engineering, Detection and tracking algorithms

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Proceedings Article | 3 December 2014 Paper

FPGA based design for real-time measurement of alpha

Zhenghao Liu, Yanguang Yu, Qinghua Guo, Jiangtao Xi, Jun Tong, Sheng Tong

Proceedings Volume 9267, 92670S (2014) https://doi.org/10.1117/12.2071308

KEYWORDS: Signal detection, Field programmable gate arrays, Signal processing, Filtering (signal processing), Electronic filtering, Interference (communication), Bandpass filters, Feedback signals, Digital filtering, Interferometry

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Proceedings Article | 13 November 2014 Paper

Experimental study for the influence of surface characteristics on the fringe patterns

Yifan Wei, Jiangtao Xi, Yanguang Yu, Qinghua Guo, Yongkai Yin

Proceedings Volume 9276, 92760W (2014) https://doi.org/10.1117/12.2071295

KEYWORDS: Modulation, Fringe analysis, Cameras, 3D metrology, Reflectivity, Phase shift keying, 3D image processing, Algorithm development, Ceramics, Imaging systems

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SPIE Journal Paper | 3 July 2014

Spatial shift unwrapping for digital fringe profilometry based on spatial shift estimation

Pu Cao, Jiangtao Xi, Yanguang Yu, Qinghua Guo

JEI, Vol. 23, Issue 04, 043002, (July 2014) https://doi.org/10.1117/12.10.1117/1.JEI.23.4.043002

KEYWORDS: Fringe analysis, 3D modeling, Wave propagation, CCD cameras, Phase shift keying, Distortion, Phase measurement, Projection systems, Cameras, Digital cameras

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Proceedings Article | 28 May 2014 Paper

Digital fringe profilometry based on triangular fringe patterns and spatial shift estimation

Pu Cao, Jiangtao Xi, Yanguang Yu, Qinghua Guo

Proceedings Volume 9110, 91100C (2014) https://doi.org/10.1117/12.2049791

KEYWORDS: Fringe analysis, Distortion, 3D metrology, Projection systems, Phase shift keying, Phase shifts, Cameras, CCD cameras, Error analysis, Video

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SPIE Journal Paper | 22 May 2014

New approach to improve the performance of fringe pattern profilometry using multiple triangular patterns for the measurement of objects in motion

Lei Lu, Jiangtao Xi, Yanguang Yu, Qinghua Guo

OE, Vol. 53, Issue 11, 112211, (May 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.11.112211

KEYWORDS: Fringe analysis, Motion estimation, Reconstruction algorithms, Optical engineering, Motion measurement, Cameras, Phase shifting, Lutetium, Time metrology, 3D metrology

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Proceedings Article | 6 March 2014 Paper

A multiple wavelength unwrapping algorithm for digital fringe profilometry based on spatial shift estimation

Pu Cao, Jiangtao Xi, Yanguang Yu, Qinghua Guo

Proceedings Volume 9013, 90130E (2014) https://doi.org/10.1117/12.2038954

KEYWORDS: Fringe analysis, 3D metrology, Phase shift keying, Projection systems, 3D image processing, Cameras, Distortion, Phase shifts, Phase measurement, CCD cameras

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Showing 5 of 26 publications

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