中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Soil microbial respiration adapts to higher and longer warming experiments at the global scale 期刊论文  OAI收割
ENVIRONMENTAL RESEARCH LETTERS, 2023, 卷号: 18, 期号: 3, 页码: 34044
作者:  
Yang, Lu;  Pan, Junxiao;  Wang, Jinsong;  Tian, Dashuan;  Zhang, Chunyu
  |  收藏  |  浏览/下载:15/0  |  提交时间:2023/05/06
A matching algorithm on statistical properties of Harris corner (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China
作者:  
He B.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
The fundamental goal of target recognition and video tracking is to match target template with source image. Most matching methods are based on image intensity or multi-feature points. And the latter method is more popular for its high accuracy and small calculation. Image Registration Based on Feature Points focus on effective feature extraction of image points and paradigm. Harris corner in the image rotation  gray  noise and viewpoint change conditions  has an ideal match results  is more recent application of one feature point. This paper extract the Harris corner deviation and covariance firstly  experiments show that the two features exclusive  then applied them to image registration for the first time. A set of actual images have shown  this proposed method not only overcomes the complicated background  gray uneven distribution problems  but also pan and zoom the image has a good resistance. 2011 IEEE.  
Research on tracking approach to low-flying weak small target near the sea (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Xue X.-C.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
Automatic target detection is very difficult in complicate background of sea and sky because of the clutter caused by waves and clouds nearby the sea-level line. In this paper  in view of the low-flying target near the sea is always above the sea-level line  we can first locate the sea-level line  and neglect the image data beneath the sea-level line. Thus the noise under the sea-level line can be suppressed  and the executive time of target segmentation is also much reduced. A new method is proposed  which first uses neighborhood averaging method to suppress background and enhance targets so as to increase SNR  and then uses the multi-point multi-layer vertical Sobel operator combined with linear least squares fitting to locate the sea-level line  lastly uses the centroid tracking algorithm to detect and track the target. In the experiment  high frame rate and high-resolution digital CCD camera and high performance DSP are applied. Experimental results show that this method can efficiently locate the sea-level line on various conditions of lower contrast  and eliminate the negative impact of the clutter caused by waves and clouds  and capture and track target real-timely and accurately.  
A TIME-DEPENDENT SOLUTION OF TRANSONIC, TRANS-ALFVENIC MHD FLOW IN THE SOLAR MERIDIAN 期刊论文  OAI收割
Science in China Series a-Mathematics Physics Astronomy, 1993, 卷号: 36, 期号: 1, 页码: 83-89
Zhang, J. H.; Wei, F. S.
收藏  |  浏览/下载:26/0  |  提交时间:2014/04/30