Mr. Changjie Liu Profile

Changjie Liu

Associate Professor at Tianjin Univ

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 12 March 2020 Paper

Paper

Machine vision based recognition and integrity inspection of printing characters on food package

Zekun Jing, Changjie Liu, Xinlin Jia, Zixiong Li, Dong Chen

Proceedings Volume 11439, 114391F (2020) https://doi.org/10.1117/12.2550049

KEYWORDS: Image segmentation, Image processing, Neural networks, Machine vision, Optical character recognition, Image filtering, Defect detection

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Proceedings Article | 12 March 2020 Paper

Paper

Research on calibration method of hybrid Body-in-White online measurement system

Xinlin Jia, Changjie Liu, Lifang Wang, Zekun Jing, Zixiong Li

Proceedings Volume 11439, 114391A (2020) https://doi.org/10.1117/12.2548982

KEYWORDS: Calibration, Sensors, Measurement devices, Cameras, Imaging systems, Robotic systems, 3D vision

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Proceedings Article | 12 March 2020 Paper

Paper

Design and test of a multi-line structured light projector

Zixiong Li, Changjie Liu, Guoqing Wang, Zekun Jing, Xinlin Jia

Proceedings Volume 11439, 114390W (2020) https://doi.org/10.1117/12.2543484

KEYWORDS: Projection systems, Image processing, Structured light, Image enhancement, Image segmentation

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Proceedings Article | 12 January 2018 Paper

Paper

Optimization of dynamic envelope measurement system for high speed train based on monocular vision

Bin Wu, Changjie Liu, Luhua Fu, Zhong Wang

Proceedings Volume 10621, 106211Q (2018) https://doi.org/10.1117/12.2295363

KEYWORDS: Cameras, Calibration, Imaging systems, Image processing, Dynamical systems, Laser processing, High speed cameras, Measurement devices, Data processing, Light sources

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Proceedings Article | 12 January 2018 Paper

Paper

Research on key technology of the verification system of steel rule based on vision measurement

Siyuan Jia, Zhong Wang, Changjie Liu, Luhua Fu, Yiming Li, Ruijun Lu

Proceedings Volume 10621, 106211X (2018) https://doi.org/10.1117/12.2295532

KEYWORDS: Calibration, Image processing, Cameras, Rule based systems, Reliability, Machine vision, Measurement devices, Manufacturing, Lithium, Lutetium

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Proceedings Article | 12 January 2018 Paper

Paper

A method of detection to the grinding wheel layer thickness based on computer vision

Yuchen Ji, Luhua Fu, Dujuan Yang, Lei Wang, Changjie Liu, Zhong Wang

Proceedings Volume 10621, 106211U (2018) https://doi.org/10.1117/12.2295482

KEYWORDS: Machine vision, Light sources and illumination, Computer vision technology, Digital filtering, Image processing, Manufacturing, Cameras, Gaussian filters, Computing systems, Imaging systems

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Proceedings Article | 12 January 2018 Paper

Paper

Automatic measuring method of catenary geometric parameters based on laser scanning and imaging

Luhua Fu, Songhong Chang, Changjie Liu

Proceedings Volume 10621, 106211O (2018) https://doi.org/10.1117/12.2295340

KEYWORDS: Calibration, Laser scanners, Imaging systems, CCD image sensors, Sensors, Image processing, Imaging arrays, Mathematical modeling, Reflectors

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Proceedings Article | 12 January 2018 Paper

Paper

Parallelism measurement for base plate of standard artifact with multiple tactile approaches

Xiuling Ye, Yan Zhao, Yiwen Wang, Zhong Wang, Luhua Fu, Changjie Liu

Proceedings Volume 10621, 106211C (2018) https://doi.org/10.1117/12.2294963

KEYWORDS: Error analysis, Manufacturing, Distance measurement, Standards development, Composites, Tolerancing, 3D modeling, Mathematical modeling, Optoelectronics, Instrumentation engineering

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Proceedings Article | 12 January 2018 Paper

Paper

An in-situ measuring method for planar straightness error

Xi Chen, Luhua Fu, Tongyu Yang, Changku Sun, Zhong Wang, Yan Zhao, Changjie Liu

Proceedings Volume 10621, 106211J (2018) https://doi.org/10.1117/12.2295244

KEYWORDS: Sensors, Calibration, Particle swarm optimization

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Proceedings Article | 12 January 2018 Paper

Paper

Relative position calibration of multi-LDS in shaft center measurement system

Lei Wang, Zhong Wang, Luhua Fu, Yan Zhao, Changjie Liu

Proceedings Volume 10621, 106211F (2018) https://doi.org/10.1117/12.2295009

KEYWORDS: Calibration, Error analysis, Optical simulations, Inspection, Instrument modeling, Lithium

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SPIE Journal Paper | 10 October 2017

Research on surface defect detection of ceramic ball based on fringe reflection

Kai Zhang, Luhua Fu, Zhong Wang, Ying Sun, Changjie Liu

OE, Vol. 56, Issue 10, 104104, (October 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.10.104104

KEYWORDS: Ceramics, Defect detection, Reflection, Fringe analysis, Image processing, Cameras, Silicon, Image segmentation, Distortion, Spherical lenses

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Proceedings Article | 7 August 2015 Paper

Paper

A method for recognizing of concentric circles characteristic parameters based on Gaussian sub-pixel edge detection

Mingnuo Shang, Changjie Liu, Luhua Fu

Proceedings Volume 9623, 96231E (2015) https://doi.org/10.1117/12.2193563

KEYWORDS: Edge detection, Cameras, Detection and tracking algorithms, Gaussian filters, Distortion, Target detection, Neodymium, Calibration, Convolution, Content addressable memory

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Proceedings Article | 7 August 2015 Paper

Paper

A novel non-contact measurement method of the inner diameter

Bingtian Jia, Changjie Liu, Xingqiang Li, Luhua Fu, Zhong Wang

Proceedings Volume 9623, 962316 (2015) https://doi.org/10.1117/12.2193258

KEYWORDS: Sensors, Head, Calibration, Mathematical modeling, Error analysis, Distance measurement, Mathematics, Laser beam diagnostics, Laser development, Precision measurement

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Proceedings Article | 7 August 2015 Paper

Paper

A design of cylindrical lens for linear CCD used in dynamic envelope curve measurement of high-speed train

Yan Zhang, Changjie Liu, Luhua Fu, Haiqing Liu

Proceedings Volume 9623, 962308 (2015) https://doi.org/10.1117/12.2193570

KEYWORDS: Distortion, Lens design, Charge-coupled devices, Cameras, Spherical lenses, Monochromatic aberrations, Imaging systems, CCD cameras, Modulation transfer functions, Image analysis

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Proceedings Article | 7 August 2015 Paper

Paper

Field calibration of binocular stereo vision based on fast reconstruction of 3D control field

Haijun Zhang, Changjie Liu, Luhua Fu, Yin Guo

Proceedings Volume 9623, 96230I (2015) https://doi.org/10.1117/12.2193564

KEYWORDS: Calibration, Cameras, Control systems, Sensors, Imaging systems, 3D vision, Stereo vision systems, Manufacturing, 3D metrology, 3D modeling

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Showing 5 of 15 publications

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