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检索条件"机构=the Key Laboratory of Image Processing and Intelligent Control"
3176 条 记 录,以下是3151-3160 订阅
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Autonomous optical navigation for interplanetary exploration based on information of earth-moon
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Journal of Harbin Institute of Technology(New Series) 2003年 第3期10卷 343-348页
作者: 吴伟仁 田玉龙 黄翔宇 Institute for Pattern Recognition and Artificial Intelligence State Key Lab. for Image Processing and Intelligent Control Huazhong University of Science and Technology Wuhan 430074 China Deep Space Exploration Research Center Harbin Institute of Technology Harbin 150001 Chinahe image elements of earth-center and moon-center are obtained by processing the images of earth and moon these image elements in combination with the inertial attitude information and the moon ephemeris are utilized to obtain the probe initial position relative to earth and the Levenberg-Marquardt algorithm is used to determine the accurate probe position relative to earth and the probe orbit relative to earth is estimated by using the extended Kalman filter. The autonomous optical navigation algorithm is validated using the digital simulation.
The image elements of earth-center and moon-center are obtained by processing the images of earthand moon, these image elements in combination with the inertial attitude information and the moon ephemerisare utilized ... 详细信息
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Modeling effects of velocity overshoot in extremely scaled MOSFETs
Modeling effects of velocity overshoot in extremely scaled M...
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IEEE Conference on Electron Devices and Solid-State Circuits
作者: J. Tong X. Zou J.P. Xu X.B. Shen Center for IC Design State Key Laboratory for Image Processing and Intelligence Control Department of Electronic Science and Technology Huazhong University of Science and Technology Wuhan China
A physical model of velocity-overshoot of hot-carriers based on the balanced equation of energy is developed and implemented in MOSFET models. Derived from the Boltzmann equation, a simple analytic simulation model ca... 详细信息
来源: 评论
Remote sensing image compression for deep space based on region of interest
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Journal of Harbin Institute of Technology(New Series) 2003年 第3期10卷 300-303页
作者: 王振华 吴伟仁 田玉龙 田金文 柳健 Institute for Pattern Recognition and Artificial Intelligence State Key Lab for Image Processing and Intelligent ControlHuazhong University of Science and Technology Wuhan 430074 China Institute for Pattern Recognition and Artificial Intelligence State Key Lab for Image Processing and Intelligent ControlHuazhong University of Science and Technology Wuhan 430074 China major limitation for deep space communication is the limited bandwidths available. The downlink rate using X-band with an L2 halo orbit is estimated to be of only 5.35 GB/d. However the Next Generation Space Telescope (NGST) will produce about 600 GB/d. Clearly the volume of data to downlink must be reduced by at least a factor of 100. One of the resolutions is to encode the data using very low bit rate image compression techniques. An very low bit rate image compression method based on region of interest(ROI) has been proposed for deep space image. The conventional image compression algorithms which encode the original data without any data analysis can maintain very good details and haven't high compression rate while the modern image compressions with semantic organization can have high compression rate even to be hundred and can't maintain too much details. The algorithms based on region of interest inheriting from the two previews algorithms have good semantic features and high fidelity and is therefore suitable for applications at a low bit rate. The proposed method extracts the region of interest by texture analysis after wavelet transform and gains optimal local quality with bit rate control. The Result shows that our method can maintain more details in ROI than general image compression algorithm(SPIHT) under the condition of sacrificing the quality of other uninterested areas
A major limitation for deep space communication is the limited bandwidths available. The downlinkrate using X-band with an L2 halo orbit is estimated to be of only 5.35 GB/d. However, the Next GenerationSpace Telescop... 详细信息
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Polyhedral Objects Metamorphosis Using Convex Decomposition and Morphology
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Virtual Reality 2003年 第4期6卷 196-204页
作者: Wen-Yu Liu Hua Li Fei Wang Guang-Xi Zhu Department of Electronics & Information Engineering State Education Commission Laboratory for Image Processing and Intelligent Control Huazhong University of Science & Technology Wuhan Hubei Peoples Republic of China Department of Electronics and Information Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China
A new technique is presented for computing continuous shape transformations between polyhedral objects. The polyhedron shape transformations can be divided into polyhedron metamorphosis and bi-directional local rigid ...
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An Evolutionary Real-Time 3D Route Planner for Aircraft
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Chinese Journal of Systems Engineering and Electronics 2003年 第1期000卷
A novel evolutionary route planner for aircraft is proposed in this paper. In the new planner, individual candidates are evaluated with respect to the workspace, thus the computation of the configuration space is not ... 详细信息
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Improvement and invariance analysis of Zernike moments  1
Improvement and invariance analysis of Zernike moments
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1st International Conference on Communications, Circuits and Systems, ICCCAS 2002
作者: Bin, Ye Xiong, Peng Jia State Key Laboratory for Image Processing and Intelligent Control Institute for Pattern Recognition and Artificial Intelligence Huazhong University of Science and Technology WuhanHubei430074 China
An improved Zernike moment using a region-based shape descriptor is presented. The improved Zernike moment not only has rotation invariance, but also has scale invariance that the unimproved Zernike moment does not ha... 详细信息
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Integer Haar wavelet for romote sensing image compression  6
Integer Haar wavelet for romote sensing image compression
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6th International Conference on Signal processing, ICSP 2002
作者: Zhenhua, Wang Hongbo, Xu Yan, Tian Jinwen, Tian Jian, Liu State Key Lab. for Image Processing and Intelligent Control Institute for Pattern Recognition and Artificial Intelligence Huazhong University of Science and Technology Wuhan430074 China
With the development of remote sensing technique, onboard data compression has become an urgent need and a lot of study has been directed toward the development of efficient techniques. In this paper, the construction... 详细信息
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A new approach to extract rectangle building from aerial urban images  6
A new approach to extract rectangle building from aerial urb...
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6th International Conference on Signal processing, ICSP 2002
作者: Tao, Wen-Bing Tian, Jin-Wen Liu, Jian State Key Laboratory for Image Processing and Intelligence Control Hubei Wuhan430074 China Institute for Pattern Recognition and Artificial Intelligence HUST Hubei Wuhan430074 China
In this paper, we proposed a new Primitive-Structure- Based approach for extracting rectangle building from aerial urban images. We obtain all kinds of primitive-structure that compose rectangle by analysing geometric... 详细信息
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Integer Haar wavelet for remote sensing image compression
Integer Haar wavelet for remote sensing image compression
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International Conference on Signal processing Proceedings (ICSP)
作者: Wang Zhenhua Xu Hongbo Tian Yan Tian Jinwen Liu Jian Institute for Pattern Recognition and Artificial Intelligence State Key Laboratory for Image Processing and Intelligent Control Huazhong University of science and Technology Wuhan China
With the development of remote sensing technique, onboard data compression has become an urgent need and a lot of study has been directed toward the development of efficient techniques. In this paper, the construction... 详细信息
来源: 评论
The design and implementation of a Chinese financial invoice recognition system
The design and implementation of a Chinese financial invoice...
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IEEE Region 8 International Symposium on Video/image processing and Multimedia Communications (EURASIP)
作者: Ming Delie Liu Jian Tian Jinwen State Key Laboratory for Image Processing and Intelligent Control Institute for Pattern Recognition and Artificial Intelligence Huazhong University of Science and Technology Wuhan Hubei China
This paper designs and implements a financial invoice recognition system based on the features of the Chinese financial invoice. By using the linear whole block moving method in each vertical segment, a new fast algor... 详细信息
来源: 评论