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

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

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

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

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

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

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Showing 5 of 6 publications

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