中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共9条，第1-9条

帮助

条数/页：排序方式：
	Engineering Nanostructured Silicon and its Practical Applications in Lithium-Ion Batteries: A Critical Review 期刊论文 OAI收割 ENERGY TECHNOLOGY, 2021, 页码: 22 作者: Zhang, Xuefan; Shi, Hebang; Lv, Pengpeng; Liu, Jinyun; Zhang, Huigang \| 收藏 \| 浏览/下载：74/0 \| 提交时间：2021/10/15 anodes lithium-ion batteries practical applications scalable fabrication silicon
	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：68/0 \| 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.
	Realization of auto-focusing system for cameras based on TMS320F2812 DSP (EI CONFERENCE) 会议论文 OAI收割 2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China 作者: Zhang T. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 Focusing systems play an important role in a variety of optical measurements and detection instruments. In this paper several kinds of auto-focusing methods were described and the relevant focusing evaluation functions were introduced based on image processing methods. An auto-focusing system based on image processing was designed by using the TMS320F2812 digital signal processing chip as a platform. Moreover some problem and solutions about auto-focusing system was demonstrated. The system designed in this paper can find the good image plane in 10 steps (about 5 second) thus it can meet the requirements of practical applications. 2011 IEEE.
	Study on image real-time interpretation based on particle filter (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China 作者: Liu S.-J. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 In order to satisfy to the real-time requirement of image interpretation system in photoelectric measurement equipments a kind of hardware acceleration system with MIMD distributed multi-processor architecture based on SOPC technology is designed. The particle filter algorithm is proposed to process image interpretation for state estimation problem of nonlinear and non-Gaussian system. This algorithm does not involve conventional linearization transform and has approximated the posterior probability density by a set of discrete particles. Therefore the approximate optimum result is educed. It has a high accuracy and a rapid convergence. Experimental results show that the algorithm be adequate to real time accuracy and robustness meets the requirement of image interpretation and possesses practical significance for engineering applications. 2011 IEEE.
	Non-uniformity correction in multi-CCD imaging system (EI CONFERENCE) 会议论文 OAI收割 2010 2nd International Conference on Mechanical and Electronics Engineering, ICMEE 2010, August 1, 2010 - August 3, 2010, Kyoto, Japan Tao M.; Ren J. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 The non-uniformity phenomenon exists in each channel of multi-CCD imaging systems. The factors which lead to the problem are complex. The conventional calibrating algorithms can not consider all of these factors and have poor effects. According to the characters of multi-CCD imaging systems a non-uniformity correction method based on the scene was proposed by adopting the traditional two-point correction theories. The correction coefficient of each channel image can be calculated via the linear relation between the two neighboring pixel lines in the two-channel images. Compared with the conventional two-point calibration and multi-point calibration methods contrastive calibrating results were obtained. This method does not need any standard lighted image as reference source which provides a real time way for calibrating the multi-CCD imaging systems in practical applications. 2010 IEEE.
	Design of image interpretation and data-processing system based on SOPC (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 Wang Z.-Q.; Liu Z.-R.; Xie M.-J. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 In order to follow the development of image interpretation and data-processing system in photoelectric measurement equipments a kind of hardware acceleration system is designed where MIMD distributed multi-processor architecture is used with SOPC technology. System hardware is composed of FPGA SDRAM SRAM FLASH and PCI bridge chip. Four Nios II embedded processors are integrated in a single FPGA chip and communicate with each other by sharing memory. Experimental results indicate that the system meets the requirements of data-processing system in photoelectric measurement equipments and possesses practical significance for engineering applications. 2010 IEEE.
	Adaptive sliding mode control for airborne Opto-Electronic platform servo system (EI CONFERENCE) 会议论文 OAI收割 7th International Conference on Machine Learning and Cybernetics, ICMLC, July 12, 2008 - July 15, 2008, Kunming, China Wang C.-X.; Liu J.-H.; Shen H.-H.; Dai M. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 The novel presents an adaptive reaching law sliding mode controller to slove a class of uncertain systems.The Airborne Opto-Electronic Platform sliding model is employed to represent a class of complex uncertain system. The control is based on reaching law control. Discrete time implementation of the sliding mode control strategy is considered in the paper since it is more appropriate for practical applications. It is shown that the robustness of the sliding mode control method is constrained by sampling time. Design of the adaptive reaching law based on a discrete expotential reaching law concept is given which to design a new sliding mode controller based on Lyapunov stability theory. The global asymptotic stability is guaranteed. An example with simulation results is given to illustrate the effectiveness of the proposed method. 2008 IEEE.
	Wideband two-port beam splitter of a binary fused-silica phase grating 期刊论文 OAI收割 appl. optics, 2008, 卷号: 47, 期号: 22, 页码: 4004, 4008 Wang Bo; 周常河; Feng Jijun; Ru Huayi; 郑将军收藏 \| 浏览/下载：1009/144 \| 提交时间：2009/09/18 1550 nm Applications. Beam interferences Beam splitters Coated films Damage thresholds Grating profiles High efficiencies Holographic recordings Incident waves Inductively coupled plasma dry etchings Littrow Low coefficient of thermal expansions Modal methods Optical elements Optimized using Phase gratings Physical mechanisms Practical Wave analyses Wide-band transmissions Wideband Wideband spectrums
	Study on the Driving Scheme of a 4-m Alt-azimuth Telescope (EI CONFERENCE) 会议论文 OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China 作者: Zhang J.; Dai S.; Zhao Y.; Zhao Y. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 By summarizing the corresponding parameters Of the driving system of a 4-m Alt-azimuth telescope some unit techniques like the driving modes and structure angular position measurement methods in detail have been analyzed in the paper. A set of primary schemes for astronomical applications including the altitude axes being driven by 2 DC torque motors the azimuth by 4 DC torque motors using helical gears and two pieces of the 27-bit segment tape encoders for each set of axes is proposed. To meet practical engineering needs the shafting motion parameters are designed and motor elementary parameters are primarily calculated to offer the important references for further study on system driving model and prototype development.