Prof. Libo Zeng Profile

Prof. Libo Zeng

at Wuhan Univ

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Author

Publications (8)

Proceedings Article | 18 November 2014 Paper

AOTF-based near-infrared imaging spectrometer for rapid identification of camouflaged target

Zhifan Gao, Libo Zeng, Qiongshui Wu

Proceedings Volume 9298, 92980R (2014) https://doi.org/10.1117/12.2072427

KEYWORDS: Spectroscopy, Crystals, Cameras, Hyperspectral imaging, Acoustics, Detector arrays, Spectral resolution, Modulation, Sensors, Imaging spectroscopy

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Acousto-optic tunable filter (AOTF) is a novel device for spectrometer. The electronic tunability qualifies it with the most compelling advantages of higher wavelength scan rate over the conventional spectrometers that are mechanically tuned, and the feature of large angular aperture makes the AOTF particularly suitable in imaging applications. In this research, an AOTF-based near-infrared imaging spectrometer was developed. The spectrometer consists of a TeO2 AOTF module, a near-infrared imaging lens assembly, an AOTF controller, an InGaAs array detector, an image acquisition card, and a PC. A precisely designed optical wedge is placed at the emergent surface of the AOTF to deal with the inherent dispersion of the TeO2 that may degrade the spatial resolution. The direct digital synthesizer (DDS) techniques and the phase locked loop (PLL) techniques are combined for radio frequency (RF) signal synthesis. The PLL is driven by the DDS to take advantage of both their merits of high frequency resolution, high frequency scan rate and strong spurious signals resistance capability. All the functions relating to wavelength scan, image acquisition, processing, storge and display are controlled by the PC. Calibration results indicate that the spectral range is 898~1670 nm, the spectral resolution is 6.8 nm(@1064 nm), the wavelength separation between frames in the spectral image assembly is 1.0 nm, and the processing time of a single image is less than 1 ms if a TV camera with 640×512 detector is incorporated. A prototype device was assembled to test the capability of differentiating samples with similar appearances, and satisfactory results were achieved. By this device, the chemical compositions and the distribution information can be obtained simultaneously. This system has the most advantages of no moving parts, fast wavelength scan and strong vibration resistance. The proposed imaging spectrometer has a significant application prospect in the area of identification of camouflaged target from complex backgrounds. In addition, only the objective lens and its accessories are required to be replaced for its use in microscopic spectral imaging system, which may be popularized to a large number of other possible applications.

Proceedings Article | 10 March 2006 Paper

An automatic segmentation method for multispectral microscopic cervical cell images

Hongbo Zhang, Libo Zeng, Hengyu Ke, Junfeng Lei, Xianze Xu, Hong Zheng, Qiongshui Wu, DianCheng Wang, Yunfei Zhang

Proceedings Volume 6144, 61443E (2006) https://doi.org/10.1117/12.640152

KEYWORDS: Image segmentation, Multispectral imaging, Image processing algorithms and systems, Image processing, Computer aided diagnosis and therapy, Cervical cancer, Computing systems, Liquid crystals, Tissues, Cameras

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Proceedings Article | 29 April 2005 Paper

Analysis of blood and bone marrow smears using multispectral imaging analysis techniques

Qiongshui Wu, Libo Zeng, Hengyu Ke, Wenjuan Xie, Hong Zheng, Yan Zhang

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.593588

KEYWORDS: Image segmentation, Multispectral imaging, Bone, Blood, Image processing, Image analysis, Image acquisition, Feature extraction, Imaging systems, Color imaging

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Proceedings Article | 20 April 2005 Paper

A multispectral imaging analysis system for early detection of cervical cancer

Qiongshui Wu, Libo Zeng, Hengyu Ke, Hong Zheng, Xijian Gao, Diancheng Wang

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.592576

KEYWORDS: Image segmentation, Multispectral imaging, Cervical cancer, Image processing, Image enhancement, Imaging systems, Image acquisition, Feature extraction, Image analysis, Charge-coupled devices

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Proceedings Article | 29 March 2005 Paper

Novel multispectral imaging microscope with applications to biomedicine

Libo Zeng, Qiongshui Wu, Hengyu Ke, Hong Zheng, Yaojun Hu, Yi Ding

Proceedings Volume 5699, (2005) https://doi.org/10.1117/12.588461

KEYWORDS: Image segmentation, Multispectral imaging, Image enhancement, Image processing, Image analysis, Microscopes, Image acquisition, Charge-coupled devices, Transmittance, Biological research

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Proceedings Article | 23 March 2005 Paper

Study pollen grains in rice by using multispectral imaging techniques

Qiongshui Wu, Yaojun Hu, Hengyu Ke, Libo Zeng, Yi Ding

Proceedings Volume 5694, (2005) https://doi.org/10.1117/12.589589

KEYWORDS: Multispectral imaging, Transmittance, Chemical analysis, Image processing, Microscopes, Image transmission, Image analysis, Charge-coupled devices, Image acquisition, Iodine

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Proceedings Article | 25 March 2003 Paper

Application of genetic algorithms and neural networks in the automatic classification of leukocytes

Libo Zeng, Bin Liu, Shenghao Liu

Proceedings Volume 5015, (2003) https://doi.org/10.1117/12.477407

KEYWORDS: Genetic algorithms, Neural networks, Feature selection, Pattern recognition, Genetics, Classification systems, Blood, Image processing, Computer programming, Imaging systems

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Proceedings Article | 14 April 2000 Paper

Application of artificial neural network (ANN) in the graphite morphology analysis of gray cast iron

Hong Jiang, Libo Zeng, Zelan Zhang, Jiming Hu

Proceedings Volume 3962, (2000) https://doi.org/10.1117/12.382918

KEYWORDS: Iron, Artificial neural networks, Fractal analysis, Image classification, Analytical research, Neural networks, Image processing, Image analysis, Electron microscopes, Feature extraction

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Showing 5 of 8 publications

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