中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Nonequilibrium spherulitic magnetite in the Ryugu samples 期刊论文  OAI收割
GEOCHIMICA ET COSMOCHIMICA ACTA, 2023, 卷号: 346, 页码: 65-75
作者:  
Dobrica, Elena;  Ishii, Hope A.;  Bradley, John P.;  Ohtaki, Kenta;  Brearley, Adrian J.
  |  收藏  |  浏览/下载:21/0  |  提交时间:2024/09/26
Parallel estimation of translation for video stabilization (EI CONFERENCE) 会议论文  OAI收割
2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China
作者:  
Wang H.;  Liu G.;  Wang H.;  Wang H.;  Wang H.
收藏  |  浏览/下载:99/0  |  提交时间:2013/03/25
Translation motion estimation is the major aspect of video motion compensation  especially in two-dimensional turntable. This paper presents a robust parallel estimation algorithm of translation in video stabilization system. The equivalent model of translation that derived is accorded with small rotation angle comparatively. A parallel algorithm based on grey mapping is used in local motion estimation to shorten the estimation time and improve the computation efficiency. After local motion vectors are calculated  a fast filter can detect the spurious vectors avoiding possible jerks. The suggested translation estimation algorithm has been implemented on NVIDIA GTX 260  the experimental results show that  the average time of the estimation and compensation finished in 16 ms/frame  and stabilize 1k1k pixels sequence gray video up to 60 frames/s. 2010 IEEE.  
Active Contour Method with Separate Global Translation and Local Deformation 会议论文  OAI收割
2nd International Conference Intelligent Robotics and Applications, Singapore, SINGAPORE, December 16-18, 2009
作者:  
Zhu LL(朱琳琳);  Fan BJ(范保杰);  Tang YD(唐延东)
收藏  |  浏览/下载:17/0  |  提交时间:2012/06/06
PSO based gabor wavelet feature extraction method (EI CONFERENCE) 会议论文  OAI收割
2004 International Conference on Information Acquisition, ICIA 2004, June 21, 2004 - June 25, 2004, Hefei, China
作者:  
Sun H.;  Zhang Y.;  Sun H.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
In this paper  the time of feature extraction is faster. By test in low contrast image  2D continues Gabor wavelets are adopted to realize feature extraction. By optimize Gabor wavelet's parameters of translation  the feasibility and effectiveness of the algorithm are demonstrated by VC++ simulation platform in experiments. 2004 IEEE.  orientation  and scale to make it approximates a local image contour region. The method of Sobel edge detection is used to get the initial position and orientation value of optimization in order to improve the convergence speed. In the wavelet characteristic space  we adopt PSO (particle swarm optimization) Algorithm to identify points on the security border of the system. Comparing to the LM algorithm  it can ensure reliable convergence the target  which can improve convergent speed