中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Spot-scanning beam delivery with laterally-and longitudinally-mixed spot size pencil beams in heavy ion radiotherapy 期刊论文  OAI收割
CHINESE PHYSICS C, 2017, 卷号: 41, 页码: 10
作者:  
Yan, Yuan-Lin;  Liu, Xin-Guo;  Dai, Zhong-Ying;  Ma, Yuan-Yuan;  He, Peng-Bo
  |  收藏  |  浏览/下载:34/0  |  提交时间:2018/05/31
Differential Evolution Based High-order Peak Filter Design with Application to Compensation of Contact-induced Vibration in HDD Servo Systems 期刊论文  OAI收割
International Journal of Automation and Computing, 2017, 卷号: 14, 期号: 1, 页码: 45-56
作者:  
Deqing Huang;  Jian-Xin Xu;  Xin Deng;  VenkatakrishnanVenkataramanan;  The CatTuong Huynh
  |  收藏  |  浏览/下载:23/0  |  提交时间:2021/02/23
Improved method of target detection on optoelectronic hybrid joint transform correlator in cluttered scences (EI CONFERENCE) 会议论文  OAI收割
2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011, September 23, 2011 - September 25, 2011, Hefei, China
作者:  
Yang L.;  Yang L.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
A classical joint transform correlator (JTC) usually yields large correlation sidelobes as well as a large correlation peak width  strong zero-order peak  and low diffraction efficiency  which make the detection ability of JTC lower. To overcome these difficulties  firstly  a joint power spectrum (JPS) subtraction technique in Fourier plane was proposed  where reference image power spectrum and object image power spectrum are subtracted from the JPS before inverse Fourier-transform operation  it is obvious that the modified JPS removes the zero-order term. Secondly  a fringe-adjusted filter (FAF) was presented to suppress sidelobes and noises. The modified JPS is multiplied by a FAF before the inverse Fourier-transform operation to obtain the cross-correlation peak. Computer simulations demonstrated the improved method can obviously remove zero-order diffraction and effectively suppress the sidelobes and noises compared with classic JTC  and then improve the detection ability for JTC. Experimental results presented the sharp correlation peak and also confirmed the method effectiveness. (2012) Trans Tech Publications  Switzerland.  
Extracting sea-sky-line based on improved local complexity (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:  
Zhang Y.-F.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
Sea-sky-line extraction under complicated sea-sky background is an important aspect of long-range target tracking research. An algorithm based on improved local complexity is proposed according to the feature that the sky and the sea usually show up at different gray levels in sea-sky background images. Median filter is applied first to remove peak noise  and then the point set of sea-sky-line region which has the greatest change in image is obtained by calculating the local complexity of image and selecting a segmentation threshold. Finally  Hough transform is used to extract the sea-sky-line. The experiment results indicate that this method can extract sea-sky-line under simple and complicated sea-sky backgrounds  which is robust and can improve noise immunity of the algorithm. 2010 IEEE.  
Rotating wheel filter design and optimization for a uniform depth dose distribution in heavy ion therapy 期刊论文  OAI收割
CHINESE PHYSICS C, 2008, 卷号: 32, 期号: Suppl. 2, 页码: 294-298
作者:  
Zhou Qing-Ming
  |  收藏  |  浏览/下载:30/0  |  提交时间:2010/10/29