中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Controlled synthesized natroalunite microtubes applied for cadmium(II) and phosphate co-removal 期刊论文  OAI收割
JOURNAL OF HAZARDOUS MATERIALS, 2016, 卷号: 314, 期号: 无, 页码: 249-259
作者:  
Xu, Huan;  Zhu, Baisheng;  Ren, Xuemei;  Shao, Dadong;  Tan, Xiaoli
收藏  |  浏览/下载:25/0  |  提交时间:2017/07/17
Effect of pH, humic acid and addition sequences on Eu(III) sorption onto gamma-Al2O3 study by batch and time resolved laser fluorescence spectroscopy 期刊论文  OAI收割
CHEMICAL ENGINEERING JOURNAL, 2016, 卷号: 287, 期号: 无, 页码: 313-320
作者:  
Wang, Xiangxue;  Chen, Zhongshan;  Tan, Xiaoli;  Hayat, Tasawar;  Ahmad, Bashir
收藏  |  浏览/下载:27/0  |  提交时间:2017/07/20
Efficient human action recognition using accumulated motion image and support vector machines (EI CONFERENCE) 会议论文  OAI收割
International Workshop on Advanced Computational Intelligence and Intelligent Informatics, IWACIII 2011, November 19, 2011 - November 23, 2011, Suzhou, China
作者:  
Zhang X.;  Zhang J.;  Zhang J.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:67/0  |  提交时间:2013/03/25
Vision-based human action recognition provides an advanced interface  and research in this field of human action recognition has been actively carried out. This paper describes a scheme for recognizing human actions from a video sequences. The proposed method is an extension of the Motion History Image(MHI) method based on the ordinal measure of accumulated motion  which is robust to variations of appearances. We define the accumulated motion image(AMI) using image differences firstly. Then the AMI of the video sequencesis resized to a MN regulation following the standard of training phases. Finally  we employ Support Vector Machine(SVM) as a classifier to distinguish the current activity in target video sequences. In a word  our proposed algorithm not only outperforms the state of art on public available KTH data set and Weizmann data set  but also proves practical to some real world applications  in addition  this method is computationally simple and able to achieve a satisfactory accuracy.  
Layered fast correlation tracking algorithm combined with target feature (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
Guo L.-H.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
Real time tracking by LOPF algorithm with mixture model (EI CONFERENCE) 会议论文  OAI收割
MIPPR 2007: Automatic Target Recognition and Image Analysis; and Multispectral Image Acquisition, November 15, 2007 - November 17, 2007, Wuhan, China
Meng B.; Zhu M.; Han G.; Wu Z.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
A new particle filter-the Local Optimum Particle Filter (LOPF) algorithm is presented for tracking object accurately and steadily in visual sequences in real time which is a challenge task in computer vision field. In order to using the particles efficiently  we first use Sobel algorithm to extract the profile of the object. Then  we employ a new Local Optimum algorithm to auto-initialize some certain number of particles from these edge points as centre of the particles. The main advantage we do this in stead of selecting particles randomly in conventional particle filter is that we can pay more attentions on these more important optimum candidates and reduce the unnecessary calculation on those negligible ones  in addition we can overcome the conventional degeneracy phenomenon in a way and decrease the computational costs. Otherwise  the threshold is a key factor that affecting the results very much. So here we adapt an adaptive threshold choosing method to get the optimal Sobel result. The dissimilarities between the target model and the target candidates are expressed by a metric derived from the Bhattacharyya coefficient. Here  we use both the counter cue to select the particles and the color cur to describe the targets as the mixture target model. The effectiveness of our scheme is demonstrated by real visual tracking experiments. Results from simulations and experiments with real video data show the improved performance of the proposed algorithm when compared with that of the standard particle filter. The superior performance is evident when the target encountering the occlusion in real video where the standard particle filter usually fails.