中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Development of a hybrid parallel MCV-based high-order global shallow-water model 期刊论文  OAI收割
The Journal of Supercomputing, 2017, 卷号: 73, 期号: 6, 页码: 2823–2842
作者:  
Peng Zhang;  Chao Yang;  Chungang Chen;  Xingliang Li;  Xueshun Shen
收藏  |  浏览/下载:29/0  |  提交时间:2017/07/08
A Slope Constrained 4th Order Multi-Moment Finite Volume Method with WENO Limiter 期刊论文  OAI收割
COMMUNICATIONS IN COMPUTATIONAL PHYSICS, 2015, 卷号: 18, 期号: 4, 页码: 901-930
作者:  
Sun ZY;  Teng HH(滕宏辉);  Xiao F
收藏  |  浏览/下载:85/0  |  提交时间:2016/01/08
Multi-focus image fusion algorithm based on adaptive PCNN and wavelet transform (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wu Z.-G.; Wang M.-J.; Han G.-L.
收藏  |  浏览/下载:78/0  |  提交时间:2013/03/25
Being an efficient method of information fusion  image fusion has been used in many fields such as machine vision  medical diagnosis  military applications and remote sensing.In this paper  Pulse Coupled Neural Network (PCNN) is introduced in this research field for its interesting properties in image processing  including segmentation  target recognition et al.  and a novel algorithm based on PCNN and Wavelet Transform for Multi-focus image fusion is proposed. First  the two original images are decomposed by wavelet transform. Then  based on the PCNN  a fusion rule in the Wavelet domain is given. This algorithm uses the wavelet coefficient in each frequency domain as the linking strength  so that its value can be chosen adaptively. Wavelet coefficients map to the range of image gray-scale. The output threshold function attenuates to minimum gray over time. Then all pixels of image get the ignition. So  the output of PCNN in each iteration time is ignition wavelet coefficients of threshold strength in different time. At this moment  the sequences of ignition of wavelet coefficients represent ignition timing of each neuron. The ignition timing of PCNN in each neuron is mapped to corresponding image gray-scale range  which is a picture of ignition timing mapping. Then it can judge the targets in the neuron are obvious features or not obvious. The fusion coefficients are decided by the compare-selection operator with the firing time gradient maps and the fusion image is reconstructed by wavelet inverse transform. Furthermore  by this algorithm  the threshold adjusting constant is estimated by appointed iteration number. Furthermore  In order to sufficient reflect order of the firing time  the threshold adjusting constant is estimated by appointed iteration number. So after the iteration achieved  each of the wavelet coefficient is activated. In order to verify the effectiveness of proposed rules  the experiments upon Multi-focus image are done. Moreover  comparative results of evaluating fusion quality are listed. The experimental results show that the method can effectively enhance the edge details and improve the spatial resolution of the image. 2011 SPIE.  
Global advection transport model on hexagonal-pentagonal geodesic grid by multi-moment scheme 会议论文  OAI收割
International Conference on Computational Science (ICCS) on the Ascent of Computational Excellence, Singapore, SINGAPORE, JUN 01-03, 2011
作者:  
Bin JZ(宾聚忠);  Chen CG(陈春刚);  Xiao F(肖锋)
收藏  |  浏览/下载:37/0  |  提交时间:2013/02/26
基于多矩的有限体积浸入边界法研究 学位论文  OAI收割
硕士, 北京: 中国科学院研究生院, 2009
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收藏  |  浏览/下载:1488/166  |  提交时间:2009/04/13
High Order Multi-Moment Constrained Finite Volume Method. Part I: Basic Formulation 期刊论文  OAI收割
Journal of Computational Physics, 2009, 卷号: 228, 期号: 10, 页码: 3669-3707
作者:  
Satoshi I;  Xiao F(肖锋);  Xiao F
收藏  |  浏览/下载:1222/140  |  提交时间:2009/08/03
A Cip/Multi-Moment Finite Volume Method For Shallow Water Equations With Source Terms 期刊论文  OAI收割
International Journal for Numerical Methods In Fluids, 2008, 页码: 2245-2270
作者:  
Akoh R;  Ii S;  Xiao F(肖锋)
收藏  |  浏览/下载:786/42  |  提交时间:2009/08/03
Particle-number conserving calculation for low-lying excited high-K multi-quasiparticle bands in Hf-172,Hf-174 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2002, 卷号: 26, 页码: 164-171
作者:  
Gong, LX;  Liu, SX;  Zhu, HB;  Zeng, JY
  |  收藏  |  浏览/下载:10/0  |  提交时间:2018/05/31