Dr. Yunfeng Ji Profile

Dr. Yunfeng Ji

at Tongji Univ

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 16 May 2013 Paper

A compound detector array for the measurement of large area laser beam intensity distribution

Fei Wang, Yongjie Xie, Yunfeng Ji, Liuhua Duan, Xisheng Ye

Proceedings Volume 8796, 87961Z (2013) https://doi.org/10.1117/12.2011129

KEYWORDS: Sensors, Laser beam diagnostics, Diagnostics, Fusion energy, Calibration, Detector arrays, Optical testing, Laser energy, Temperature metrology, Temporal resolution

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Proceedings Article | 16 May 2013 Paper

Research on quasi-phase-matched mid-infrared optical parametric oscillator

Zhongmin He, Chang Jiang, Ke Huang, Yunfeng Ji, Yanlong Shen, Xisheng Ye

Proceedings Volume 8796, 87962E (2013) https://doi.org/10.1117/12.2011310

KEYWORDS: Optical parametric oscillators, Mid-IR, Nd:YAG lasers, Analytical research, Crystals, Reflectivity, Laser crystals, Wavelength tuning, Quantum cascade lasers, Free electron lasers

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Proceedings Article | 1 April 2010 Paper

A computer vision-based approach for structural displacement measurement

Yunfeng Ji

Proceedings Volume 7647, 76473H (2010) https://doi.org/10.1117/12.847119

KEYWORDS: Cameras, Calibration, Bridges, Motion measurement, Machine vision, Computer vision technology, Video, Imaging systems, 3D image processing, 3D metrology

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Proceedings Article | 10 April 2007 Paper

Non-target image technique for spatial-temporal structural responses measurement

C. Chang, Yunfeng Ji

Proceedings Volume 6529, 65291K (2007) https://doi.org/10.1117/12.715989

KEYWORDS: Cameras, 3D image processing, Calibration, 3D acquisition, 3D metrology, Imaging systems, Edge detection, Digital imaging, Wavelets, Image acquisition

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Proceedings Article | 5 April 2006 Paper

Identification of structural dynamic behavior for continuous system based on videogrammetric technique

Yunfeng Ji, C. C. Chang

Proceedings Volume 6173, 61731I (2006) https://doi.org/10.1117/12.657828

KEYWORDS: Cameras, Calibration, Structural dynamics, Imaging systems, 3D image processing, Edge detection, 3D metrology, Image processing, 3D acquisition, Sensors

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Proceedings Article | 17 May 2005 Paper

High precision videogrammetric technique for structural dynamic response measurement

Chih-Chen Chang, Yunfeng Ji

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.599320

KEYWORDS: Cameras, Calibration, 3D image reconstruction, Imaging systems, 3D metrology, 3D image processing, Bridges, Photogrammetry, Digital cameras, 3D acquisition

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Showing 5 of 6 publications

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