Prof. Wenjing Chen Profile

Prof. Wenjing Chen

at Sichuan Univ

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 6 November 2023 Paper

Gamma rectification solutions based on probability density function

Xin Yu, Yuankun Liu, Wenjing Chen

Proceedings Volume 12921, 129210U (2023) https://doi.org/10.1117/12.2688052

KEYWORDS: Fringe analysis, Phase shifts, Phase measurement, Computer simulations, Projection systems, Phase unwrapping, Phase distribution, Light sources and illumination, Gamma correction, Cameras

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Proceedings Article | 27 January 2023 Paper

3D shape, deformation and strain measurement on complex structure using DIC-assisted fringe projection profilometry

Zhaosheng Chen, Zhengdong Chen, Haoran Wang, Xunren Li, Qican Zhang, Wenjing Chen, Zhoujie Wu

Proceedings Volume 12550, 1255027 (2023) https://doi.org/10.1117/12.2666885

KEYWORDS: Deformation, Digital image correlation, 3D metrology, 3D projection, Phase shifts, Projection systems, Modulation, Cameras, 3D image processing, Shape analysis

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Proceedings Article | 21 December 2022 Paper

Learned NIR&VISCAM: multi-spectral fusion for large depth-of-field computational imaging

Tingdong Kou, Junfei Shen, Qican Zhang, Wenjing Chen

Proceedings Volume 12315, 123150S (2022) https://doi.org/10.1117/12.2642517

KEYWORDS: Near infrared, Image fusion, Cameras, Signal to noise ratio, Optical imaging, Computational imaging, Computer programming, Point spread functions, Imaging systems, Inverse optics

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SPIE Journal Paper | 18 June 2021

Axis alignment method in the rotating photogrammetric system

Yanli Hou, Xianyu Su, Wenjing Chen

OE, Vol. 60, Issue 06, 064105, (June 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.6.064105

KEYWORDS: Cameras, Imaging systems, Calibration, Panoramic photography, Optical engineering, Systems modeling, Photogrammetry, Image resolution, Computing systems, Virtual reality

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SPIE Journal Paper | 26 October 2017

Discussion on accurate phase–height mapping in fringe projection profilometry

Wenjing Zhao, Xianyu Su, Wenjing Chen

OE, Vol. 56, Issue 10, 104109, (October 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.10.104109

KEYWORDS: Distortion, Imaging systems, Calibration, Cameras, Projection systems, Optical engineering, Computer simulations, Associative arrays, Fringe analysis, Phase measurement

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Proceedings Article | 16 August 2017 Open Access

Exploration on the matching between Optical Comprehensive Design Experiment and Washington Accord

Yiping Cao, Wenjing Chen, Qican Zhang, Yuankun Liu, Dahai Li, Xinzhi Zhou, Jun Wei

Proceedings Volume 10452, 104526P (2017) https://doi.org/10.1117/12.2269997

KEYWORDS: Optical design, Engineering education, Analytical research, Optical tracking, Analog electronics, Digital electronics, Software, Refractive index

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Common problems faced in optical comprehensive design experiment and going against the Washington Accord are pointed out. For resolving these problems, an instructional and innovative teaching scheme for Optics Comprehensive Design Experiment is proposed. We would like to understand the student that can improve the hands-on practical ability, theory knowledge understanding ability, complex problem solving ability, engineering application ability, cooperative ability after tracking and researching the student who have attended the class about Optical Comprehensive Design Experiment, We found that there are some problems on the course such as the experiment content vague, the student beginning less time, phase separation theory and engineering application, the experiment content lack of selectivity and so on. So we have made some improvements reference to the Washington Accord for the class teaching plan about Optical Comprehensive Design Experiment. This class must relevant to the engineering basic courses, professional foundation course and the major courses, so far as to the future study and work that which can play a role in inheriting and continuity to the students. The Optical Comprehensive Design Experiment teaching program requires students learning this course to have learnt basic courses like analog electronics technique, digital electronic technique, applied optics and computer and other related courses which students are required to comprehensively utilize. This teaching scheme contains six practical complex engineering problems which are respectively optical system design, light energy meter design, illuminometer design, material refractive index measuring system design, light intensity measuring system design and open design. Establishing the optional experiment and open experiment can provide students with a greater choice and enhance the students' creativity, vivid teaching experimental teachers and enriching contents of experiment can make the experiment more interesting, providing students with more opportunities to conduct experiment and improving students' practical ability with long learning time, putting emphasis on student's understanding of complex engineering problems and the cognitive of the process to solve complex engineering problems with actual engineering problems. Applying the scheme in other courses and improving accordingly will be able to ensure the quality of engineering education. Look forward to offering useful reference for the curriculum system construction in colleges and universities.

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SPIE Journal Paper | 11 March 2017

Application of two-dimensional wavelet transform in the modulation measurement profilometry

Jingjing Huang, Wenjing Chen, Xianyu Su

OE, Vol. 56, Issue 03, 034105, (March 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.3.034105

KEYWORDS: Modulation, Wavelet transforms, Fourier transforms, Fringe analysis, Wavelets, Phase shift keying, Computer simulations, Optical testing, Error analysis, 3D metrology

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Proceedings Article | 13 September 2012 Paper

Analyzing of fringe patterns polluted by noise and nonlinearity using S-Transform

Min Zhong, Wenjing Chen

Proceedings Volume 8493, 84930L (2012) https://doi.org/10.1117/12.929112

KEYWORDS: Fourier transforms, Fringe analysis, Wavelet transforms, Optical testing, Signal to noise ratio, Computer simulations, Time-frequency analysis, Signal analyzers, Wavelets, Nonlinear filtering

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Proceedings Article | 15 April 2010 Paper

Study on wavelet transform profilometry based on fringe projection with two carrier frequencies

Wenjing Chen, Yue Zhao, Xianyu Su

Proceedings Volume 7522, 752259 (2010) https://doi.org/10.1117/12.851628

KEYWORDS: Fringe analysis, Wavelet transforms, Wavelets, Continuous wavelet transforms, Computer simulations, CCD cameras, Shape analysis, 3D metrology, Signal processing, Phase modulation

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Proceedings Article | 29 October 2009 Paper

Profile analysis of ventricle specimen based on a new phase measuring method

Yiping Cao, Xianyu Su, Wenjing Chen, Liqun Xiang, Qichan Zhang, Yuankun Liu

Proceedings Volume 7519, 751918 (2009) https://doi.org/10.1117/12.843234

KEYWORDS: 3D metrology, Phase shifts, Heart, 3D image processing, Surgery, Phase shifting, Charge-coupled devices, Diagnostics, Biology, Medicine

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SPIE Journal Paper | 1 June 2006

Adaptive windowed Fourier transform in 3-D shape measurement

Suzhen Zheng, Wenjing Chen, Xianyu Su

OE, Vol. 45, Issue 06, 063601, (June 2006) https://doi.org/10.1117/12.10.1117/1.2213986

KEYWORDS: Fourier transforms, Modulation, Fringe analysis, Phase shift keying, Wavelets, 3D metrology, Continuous wavelet transforms, Wavelet transforms, Optical engineering, Phase measurement

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Proceedings Article | 20 January 2006 Paper

Fourier transform profilometry based on a fringe pattern with two frequency components

Wenjing Chen, Xianyu Su, Yipping Cao, Liqun Xiang, Qican Zhang

Proceedings Volume 6027, 60271I (2006) https://doi.org/10.1117/12.667958

KEYWORDS: Fringe analysis, Fourier transforms, CCD cameras, Laser optics, Spherical lenses, 3D metrology, Projection systems, Cameras, 3D modeling, Phase modulation

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SPIE Journal Paper | 1 November 2005

Optical 3-D shape and deformation measurement of rotating blades using stroboscopic structured illumination

Qican Zhang, Xianyu Su, Yiping Cao, Yong Li, Liqun Xiang, Wenjing Chen

OE, Vol. 44, Issue 11, 113601, (November 2005) https://doi.org/10.1117/12.10.1117/1.2127927

KEYWORDS: 3D metrology, Fringe analysis, Fluctuations and noise, 3D image processing, CCD cameras, Motion measurement, Optical engineering, Fourier transforms, Imaging systems, Charge-coupled devices

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Proceedings Article | 12 April 2005 Paper

A stroboscopic structured illumination system used in dynamic 3D visualization of high-speed motion object

Xianyu Su, Qican Zhang, Yong Li, Liqun Xiang, Yiping Cao, Wenjing Chen

Proceedings Volume 5852, (2005) https://doi.org/10.1117/12.621922

KEYWORDS: 3D metrology, Motion measurement, Fluctuations and noise, Fringe analysis, Sensors, Light emitting diodes, 3D visualizations, Dynamical systems, Signal detection, Data processing

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Proceedings Article | 12 April 2005 Paper

Numerical simulation effect of DMD spatio-temporal characteristic on phase measuring profilometry

Yiping Cao, Xianyu Su, Liqun Xiang, Wenjing Chen, Qican Zhang

Proceedings Volume 5852, (2005) https://doi.org/10.1117/12.621466

KEYWORDS: Digital micromirror devices, Charge-coupled devices, Technetium, Fringe analysis, Digital Light Processing, Numerical simulations, Micromirrors, Structural sensing, Computer simulations, Phase shifting

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Proceedings Article | 12 April 2005 Paper

Three-dimensional shape visualization of balloon hull in quick deflation

Qican Zhang, Xianyu Su, Liqun Xiang, Yiping Cao, Wenjing Chen

Proceedings Volume 5852, (2005) https://doi.org/10.1117/12.621930

KEYWORDS: 3D metrology, Fourier transforms, Fringe analysis, CCD cameras, 3D image processing, Visualization, Projection systems, Data processing, Imaging systems, Cameras

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SPIE Journal Paper | 1 January 2004

Improving Fourier transform profilometry based on bicolor fringe pattern

Wenjing Chen, Xianyu Su, Yiping Cao, Liqun Xiang

OE, Vol. 43, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1630314

KEYWORDS: Fringe analysis, Fourier transforms, Digital cameras, Calibration, Projection systems, Optical engineering, RGB color model, Digital imaging, Computer simulations, 3D metrology

Proceedings Article | 8 December 2003 Paper

A quick method to obtain 3D surface data

Wenjing Chen, Xianyu Su, Yiping Cao, Liqun Xiang, Qican Zhang

Proceedings Volume 5254, (2003) https://doi.org/10.1117/12.546169

KEYWORDS: Fringe analysis, Fourier transforms, 3D metrology, Calibration, Digital cameras, Projection systems, Phase shifting, RGB color model, 3D modeling, Inspection

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Proceedings Article | 8 December 2003 Paper

An optical real-time 3D measurement for analysis of facial shape and movement

Qican Zhang, Xianyu Su, Wenjing Chen, Yiping Cao, Liqun Xiang

Proceedings Volume 5254, (2003) https://doi.org/10.1117/12.546154

KEYWORDS: 3D metrology, Fourier transforms, Shape analysis, Surgery, Fringe analysis, Motion analysis, 3D image processing, Imaging systems, Biomedical optics, CCD cameras

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Proceedings Article | 8 December 2003 Paper

New method to improve range and precision on 3D surface measurement

Wenjing Chen, Xianyu Su, Yiping Cao, Liqun Xiang, Qican Zhang

Proceedings Volume 5254, (2003) https://doi.org/10.1117/12.546150

KEYWORDS: Fourier transforms, Fringe analysis, 3D metrology, Phase shifting, CCD cameras, Optical filters, Surgery, Complex systems, Projection systems, Gallium

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Proceedings Article | 8 December 2003 Paper

A fast method to measure the 3D surface of the human heart

Yiping Cao, Xianyu Su, Liqun Xiang, Wenjing Chen, Qican Zhang

Proceedings Volume 5254, (2003) https://doi.org/10.1117/12.546556

KEYWORDS: Heart, 3D metrology, Surgery, Diagnostics, Photography, Biology, Medicine, 3D image processing, Biological research, Phase measurement

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Proceedings Article | 19 November 2003 Paper

Three-dimensional visualization of shape measurement data based on CGH

Hui Wang, Yong Li, Hongzhen Jin, Chaofu Yin, Xianyu Su, Wenjing Chen

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.523970

KEYWORDS: Computer generated holography, 3D metrology, Holograms, 3D acquisition, Holography, 3D visualizations, 3D image processing, 3D modeling, Visualization, Wavefronts

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Proceedings Article | 19 June 2002 Paper

Realization of aliasing reduction in FTP using microscanning

Wenjing Chen, Xianyu Su, Yiping Cao, Liqun Xiang

Proceedings Volume 4778, (2002) https://doi.org/10.1117/12.473558

KEYWORDS: Fringe analysis, Charge-coupled devices, Fourier transforms, Computer simulations, 3D metrology, CCD cameras, Projection systems, Phase shifting, Phase shift keying, Phase modulation

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Proceedings Article | 19 June 2002 Paper

Intensity transfer function of DMD and its application in PMP

Yiping Cao, Xianyu Su, Liqun Xiang, Wenjing Chen

Proceedings Volume 4778, (2002) https://doi.org/10.1117/12.473557

KEYWORDS: Digital micromirror devices, Projection systems, Phase measurement, Computer simulations, CCD cameras, Phase shifts, Error analysis, Micromirrors, Fringe analysis, Imaging systems

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Proceedings Article | 19 June 2002 Paper

3D shape measurement of shoeprint impression with structured illumination and fringe pattern analysis

Xianyu Su, Yiping Cao, Liqun Xiang, Wenjing Chen

Proceedings Volume 4778, (2002) https://doi.org/10.1117/12.473574

KEYWORDS: 3D metrology, Fringe analysis, Phase shift keying, Shape analysis, Calibration, Projection systems, Control systems, Computing systems, Modulation, Cameras

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Proceedings Article | 10 October 2000 Paper

Fourier transform profilometry for dynamic 3D shape

Xianyu Su, Wenjing Chen

Proceedings Volume 4222, (2000) https://doi.org/10.1117/12.403884

KEYWORDS: 3D metrology, Fourier transforms, Fringe analysis, Frame grabbers, CCD cameras, 3D image processing, Charge-coupled devices, Chest, Reconstruction algorithms, Optical filters

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Proceedings Article | 6 October 2000 Paper

New method for improving the measuring precision of 3D shapes

Wenjing Chen, Xianyu Su

Proceedings Volume 4231, (2000) https://doi.org/10.1117/12.402840

KEYWORDS: 3D metrology, Fourier transforms, Fringe analysis, Phase shifts, CCD cameras, Phase shifting, Infrared imaging, Infrared technology, Optics manufacturing, Projection systems

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SPIE Journal Paper | 1 June 1999

Error caused by sampling in Fourier transform profilometry

Wenjing Chen, Yang Hu, Xianyu Su, Songxin Tan

OE, Vol. 38, Issue 06, (June 1999) https://doi.org/10.1117/12.10.1117/1.602146

KEYWORDS: Fourier transforms, Fringe analysis, Computer simulations, Optical filters, Error analysis, Ronchi rulings, Modulation, Phase modulation, Optical engineering, Three dimensional sensing

Showing 5 of 28 publications

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