Prof. Liqun Ma Profile

Prof. Liqun Ma

director at Changcheng Institute of Measurement & Metrology

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 21 August 2020 Presentation + Paper

A method of registering point cloud with CAD model based on line contour matching

Jingjing Fan, Liqun Ma, Zhi Zou

Proceedings Volume 11509, 1150907 (2020) https://doi.org/10.1117/12.2570494

KEYWORDS: 3D modeling, Reverse modeling, 3D image processing, 3D scanning, Computer vision technology

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Proceedings Article | 17 April 2020 Paper

An approach of calculating minimal distance between assembled engine pipes based on scanned cloud points

Jingjing Fan, Liqun Ma, Zhi Zou

Proceedings Volume 11455, 114551Y (2020) https://doi.org/10.1117/12.2563386

KEYWORDS: Clouds, Lithium, Picosecond phenomena, Fluctuations and noise, Astronomical engineering

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Proceedings Article | 12 January 2018 Paper

Research on an optoelectronic measurement system of dynamic envelope measurement for China Railway high-speed train

Ziyue Zhao, Xiaochuan Gan, Zhi Zou, Liqun Ma

Proceedings Volume 10621, 1062126 (2018) https://doi.org/10.1117/12.2304291

KEYWORDS: Cameras, Imaging systems, Camera shutters, Image storage, Optoelectronics, Data storage, Dynamical systems, Digital cameras, Mathematical modeling, Connectors

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Proceedings Article | 19 September 2017 Paper

Feature recognition of metal salt spray corrosion based on color spaces statistics analysis

Zhi Zou, Liqun Ma, Qiuqin Fan, Xiaochuan Gan, Lei Qiao

Proceedings Volume 10396, 103962Q (2017) https://doi.org/10.1117/12.2273851

KEYWORDS: Corrosion, Image segmentation, Image processing, Statistical analysis, Metals, Feature extraction, RGB color model, Analytical research, Detection and tracking algorithms, Color image processing

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Proceedings Article | 23 August 2017 Presentation + Paper

Form and position measurement of sheet metal parts by boundary outlines extracting strategy

Liqun Ma, Jingjing Fan, Zili Zhou, Yongqian Li

Proceedings Volume 10373, 1037306 (2017) https://doi.org/10.1117/12.2271590

KEYWORDS: Inspection, Clouds, Manufacturing, Opto mechatronics, Metrology, Laser scanners, Data storage, Calibration

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Proceedings Article | 6 March 2015 Paper

Data communication between Panasonic PLC and PC using SerialPort control in C#.NET environment

Ting Gao, Xiaochuan Gan, Liqun Ma

Proceedings Volume 9446, 94463H (2015) https://doi.org/10.1117/12.2181373

KEYWORDS: Photonic integrated circuits, Data communications, Control systems, Telecommunications, Software development, Data processing, Chromium, Computer programming, Reliability, Calibration

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