Dr. Kefeng Ji Profile

Dr. Kefeng Ji

at National Univ of Defense Technology

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 4 December 2024 Paper

Optical-to-SAR image translation based on diffusion Schrödinger bridge

Junyu Wang, Hao Sun, Tao Tang, Lingjun Zhao, Lin Lei, Kefeng Ji

Proceedings Volume 13283, 132834D (2024) https://doi.org/10.1117/12.3037223

KEYWORDS: Synthetic aperture radar, Target recognition, Diffusion, Image processing, Bridges, Image quality, Data modeling, Statistical modeling, Image enhancement, Image classification

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Proceedings Article | 4 December 2024 Paper

Research on SAR ATR technology based on feature fusion and spiking neural network

Qinjie Lin, Hao Sun, Junyu Wang, Yanjie Xu, Kefeng Ji, Gangyao Kuang

Proceedings Volume 13283, 1328331 (2024) https://doi.org/10.1117/12.3036996

KEYWORDS: Synthetic aperture radar, Feature fusion, Target recognition, Tunable filters, Feature extraction, Neurons, Neural networks, Image fusion, Automatic target recognition, Histograms of oriented gradient

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Proceedings Article | 7 March 2024 Paper

Supervised spiking neural network for SAR image recognition: analysis of encoding methods and performance under strong noise influence

Wang Junyu, Sun Hao, Tang Tao, Lei Lin, Ji Kefeng

Proceedings Volume 13088, 1308806 (2024) https://doi.org/10.1117/12.2692471

KEYWORDS: Synthetic aperture radar, Target recognition, Artificial neural networks, Neurons, Neural networks, Education and training, Speckle, Image restoration, Image analysis, Shadows

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Proceedings Article | 8 March 2018 Paper

A modified sparse reconstruction method for three-dimensional synthetic aperture radar image

Ziqiang Zhang, Kefeng Ji, Haibo Song, Huanxin Zou

Proceedings Volume 10611, 106110R (2018) https://doi.org/10.1117/12.2289440

KEYWORDS: Reconstruction algorithms, 3D image processing, Synthetic aperture radar, 3D image reconstruction, Data modeling, 3D acquisition, 3D modeling, Stereoscopy, Image restoration, Detection and tracking algorithms

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Proceedings Article | 2 March 2016 Paper

Supervised nonparametric sparse discriminant analysis for hyperspectral imagery classification

Longfei Wu, Hao Sun, Kefeng Ji

Proceedings Volume 9901, 990119 (2016) https://doi.org/10.1117/12.2234944

KEYWORDS: Sensors, Tolerancing, Hyperspectral imaging, Image analysis, Image classification, Feature extraction, Visualization, Machine vision, Computer vision technology, Remote sensing

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Proceedings Article | 14 December 2015 Paper

Multi-features association-based local HOG description for image matching

Bingbing Wu, Shilin Zhou, Lin Lei, Kefeng Ji

Proceedings Volume 9813, 981311 (2015) https://doi.org/10.1117/12.2209096

KEYWORDS: Convolution, Image processing, Machine vision, Computer vision technology, Sensors, Detection and tracking algorithms, Fourier transforms, Electronics engineering, Defense technologies, Detector development

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SPIE Journal Paper | 20 April 2015

Simulation of spatially correlated PolSAR images using inverse transform method

Xianxiang Qin, Huanxin Zou, Shilin Zhou, Kefeng Ji

JARS, Vol. 9, Issue 01, 095082, (April 2015) https://doi.org/10.1117/12.10.1117/1.JRS.9.095082

KEYWORDS: Computer simulations, Synthetic aperture radar, Image segmentation, Speckle, Polarimetry, Data modeling, Device simulation, Scattering, Matrices, Contrast transfer function

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Proceedings Article | 24 November 2014 Paper

A robust point set registration algorithm based on information geometry

Xiaoqiang Hua, Ping Wang, Kefeng Ji, Yinghui Gao, Ruigang Fu

Proceedings Volume 9301, 930110 (2014) https://doi.org/10.1117/12.2070836

KEYWORDS: Expectation maximization algorithms, Statistical modeling, Optimization (mathematics), Image registration, Algorithm development, Visual process modeling, Detection and tracking algorithms, Machine vision, Computer vision technology, Motion models

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Proceedings Article | 26 October 2013 Paper

A refined ship segmentation method in SAR imagery

Kefeng Ji, Xiangwei Xing, Zhi Zhao, Huanxin Zou, Jixiang Sun

Proceedings Volume 8918, 89180R (2013) https://doi.org/10.1117/12.2031494

KEYWORDS: Image segmentation, Synthetic aperture radar, Radon transform, Radon, Feature extraction, Image resolution, Speckle, Backscatter, Image classification, Doppler effect

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Proceedings Article | 26 October 2013 Paper

SAR vehicle classification based on sparse representation with aspect angle constraint

Xiangwei Xing, Kefeng Ji, Huanxin Zou, Jixiang Sun

Proceedings Volume 8918, 89180K (2013) https://doi.org/10.1117/12.2031412

KEYWORDS: Synthetic aperture radar, Associative arrays, Image classification, Automatic target recognition, Target recognition, Statistical analysis, Detection and tracking algorithms, Algorithm development, Sun, Electronics engineering

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Proceedings Article | 26 October 2013 Paper

Adaptive CFAR detection of ship targets in high resolution SAR imagery

Zhi Zhao, Kefeng Ji, Xiangwei Xing, Huanxin Zou

Proceedings Volume 8917, 89170L (2013) https://doi.org/10.1117/12.2030299

KEYWORDS: Sensors, Synthetic aperture radar, Target detection, Detection and tracking algorithms, Image resolution, Statistical analysis, Algorithm development, Detector development, Sensor performance, Algorithms

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Proceedings Article | 30 October 2009 Paper

Simulation of SAR images of ground vehicles

Kefeng Ji, Aibing Zhang, Huanxin Zou, Weishun Sun

Proceedings Volume 7495, 749535 (2009) https://doi.org/10.1117/12.833897

KEYWORDS: Synthetic aperture radar, Device simulation, Scattering, Electromagnetic scattering, Target recognition, Radar, Image processing, Image resolution, 3D modeling, Diffraction

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Proceedings Article | 24 October 2007 Paper

Segmentation of multi-look fully polarimetric SAR images based on Wishart distribution and MRF

Yonghui Wu, Kefeng Ji, Wenxian Yu, Yi Su

Proceedings Volume 6748, 674813 (2007) https://doi.org/10.1117/12.736395

KEYWORDS: Image segmentation, Polarimetry, Synthetic aperture radar, Magnetorheological finishing, Image processing, Scattering, L band, Statistical analysis, Image filtering, Speckle

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Showing 5 of 13 publications

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