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浏览/检索结果: 共22条,第1-10条 帮助

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Self-Noise Spectrum Analysis and Joint Noise Filtering for the Sea-Wing Underwater Glider Based on Experimental Data 期刊论文  OAI收割
IEEE Access, 2020, 卷号: 8, 页码: 42960-42970
作者:  
Sun J(孙洁);  Wang J(王瑾);  Shi, Yang;  Hu F(胡峰);  Wang X(王旭)
  |  收藏  |  浏览/下载:62/0  |  提交时间:2020/04/11
Interpretation of comprehensive two-dimensional gas chromatography data using advanced chemometrics 期刊论文  OAI收割
trac-trends in analytical chemistry, 2014, 卷号: 53, 页码: 150-166
作者:  
Zeng, Zhongda;  Li, Jia;  Hugel, Helmut M.;  Xu, Guowang;  Marriott, Philip J.
收藏  |  浏览/下载:32/0  |  提交时间:2015/11/17
Hot deformation map and its application of GH4706 alloy 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2014, 卷号: 21, 期号: 5, 页码: 462-468
作者:  
Huang Shuo;  Wang Lei;  Lian Xintong;  Zhao Guangpu;  Li Fangfei
  |  收藏  |  浏览/下载:14/0  |  提交时间:2021/02/02
Hot deformation map and its application of GH4706 alloy 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2014, 卷号: 21, 期号: 5, 页码: 462-468
作者:  
Huang Shuo;  Wang Lei;  Lian Xintong;  Zhao Guangpu;  Li Fangfei
  |  收藏  |  浏览/下载:19/0  |  提交时间:2021/02/02
Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  
Dong Y.-X.;  Zhang H.-B.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:112/0  |  提交时间:2013/03/25
Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system  the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms  such as adaptive background prediction detecting method. When background has dispersion-decreasing structure  the traditional target detection algorithms would be more useful. But when the background has large gray gradient  such as sea-sky-line  sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature  in our opinion  from the perspective of mathematics  the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis  the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection  its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore  the purpose of the image preprocessing is to reduce the effects from noise  also to raise the SNR of image  and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics  the median filter is used to eliminate noise  improve signal-to-noise ratio  then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line  so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Noise processing technology of a TDICCD sensor (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 L.-P.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
In the application of TDI-CCD  the other is all kinds of interference noise produced in the working process of a TDI-CCD  for reset noise  because of its serious noise interference  such as reset noise and 1 / f noise  correlated double sampling is employed. The experimental results show that after noise processing  the imaging quality is reduced  etc. According to the features of noise  the output S/N has been raised to about 50 dB. 2010 IEEE.  so that it is necessary to study the noise characteristics of TDI-CCD. There are two categories of noise  this paper has studied the corresponding noise-processing technology. For dark current noise  one is the inherent noise  refrigeration is taken  including shot noise  dark current noise  fixed pattern noise and transfer noise etc.  
Target characteristic extraction algorithm based on block structure variables (EI CONFERENCE) 会议论文  OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者:  
Zhou Y.;  Yang H.;  Yan F.;  Yan F.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
The research on the automatic measurement of frequency characteristics of opto-electronic platform (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:  
Liu H.;  Liu H.;  Chen J.;  Liu H.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
Constitutive flow behavior and hot workability of powder metallurgy processed 20 vol.%SiC(P)/2024Al composite 期刊论文  OAI收割
Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2010, 卷号: 527, 期号: 29-30, 页码: 7865-7872
J. C. Shao; B. L. Xiao; Q. Z. Wang; Z. Y. Ma; Y. Liu; K. Yang
收藏  |  浏览/下载:22/0  |  提交时间:2012/04/13
Improvement of urban land use and land cover classification approach in arid areas 会议论文  OAI收割
Proceedings of SPIE - The International Society for Optical Engineering, Image and Signal Processing for Remote Sensing XVI, Toulouse, France, 2010
Qian; Jing1; 2; Zhou; Qiming1; Chen; Xi2
收藏  |  浏览/下载:36/0  |  提交时间:2011/08/23
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