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An Improved Algorithm of Automatic Fall Detection

AASRI Procedia 2012年 1卷 353-358页

作者： Hong Liu Changling Zuo Education Ministry Key Laboratory of Intelligent Computing and Signal Processing Anhui University HeFei 230039 China

Fall detection is an important problem in the application research of video surveillance. Quick and effective ways of getting the information of the people falling to the ground can help the people get timely assistance to reduce further injury. This paper proposes an improved algorithm of automatic fall detection. Three features — human aspect ratio, effective area ratio and center variation rate are used in the proposed algorithm, which can effectively prevent misjudgments and greatly increase the accuracy of detection results. This algorithm has a less computing complexity and is easy to implement. Experimental results show that the algorithm has good robustness.

关键词： video surveillance fall detection human aspect ratio effective area ratio center variation rate

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A membrane evolutionary algorithm for DNA sequence design in DNA computing

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Chinese Science Bulletin 2012年第6期57卷 698-706页

作者： XIAO JianHua ZHANG XingYi XU Jin The Research Center of Logistics Nankai UniversityTianjin 300071China Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Computer Science and TechnologyAnhui UniversityHefei 230039China School of Electronics Engineering and Computer Science Peking UniversityBeijing 100871China

DNA sequence design has a crucial role in successful DNA computation,which has been proved to be an NP-hard(non-deterministic polynomial-time hard) *** this paper,a membrane evolutionary algorithm is proposed for the DNA sequence design *** results of computer experiments are reported,in which the new algorithm is validated and out-performs certain known evolutionary algorithms for the DNA sequence design problem.

关键词： DNA计算进化算法序列设计 DNA序列膜设计问题多项式时间计算机实验

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A Design of Temperature and Humidity Remote Monitoring System Based on Wireless Sensor Network Technology

A Design of Temperature and Humidity Remote Monitoring Syste...

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International Conference on Control Engineering and Communication Technology (ICCECT)

作者： Zhiyuan Gao Yingju Jia Hongwei Zhang Xiaohui Li Key Lab of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei China

ISBN: (纸本)9781467344999

In recent years, WSN (Wireless Sensor Network) technology has been developed rapidly, and been widely used in the fields of industry, agriculture, medicine and so on. To solve the low communication rate and short-distance data transmission in the current temperature and humidity monitoring system, this paper designs a temperature and humidity remote monitoring system based on WSN technology. In this system, microprocessor Atmega128L is adopted as the control core of network node, and wireless transceiver module nRF905 is used to realize wireless data transmission. The data of temperature and humidity is sampled by using digital temperature sensor DS18B20 and humidity sensor SHT75 in the system. The proposed network protocol in this paper not only can realize long-rang wireless data transmission, but also can realize self-organizing and manual networking. The results of practical test show that this system has the stable and reliable performance and the advantage of scalab.lity.

关键词： Temperature sensors Wireless sensor networks Humidity Routing Wireless communication Temperature measurement Monitoring

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An Improved Algorithm of Automatic Fall Detection

An Improved Algorithm of Automatic Fall Detection

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2012 AASRI Conference on Computational Intelligence and Bioinformatics (CIB2012)

作者： Hong Liu Changling Zuo Education Ministry Key Laboratory of Intelligent Computing and Signal Processing Anhui University

关键词： video surveillance fall detection human aspect ratio effective area ratio center variation rate

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Contraction network for solving maximum flow problem

Contraction network for solving maximum flow problem

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ACM SIGKDD Workshop on Mining Data Semantics 2012, MDS'12 - SIGKDD 2012

作者： Zhao, Shu Xu, Xiansheng Hua, Bo Zhang, Yanping School of Computer Science and Technology Anhui University Hefei Anhui Province 230039 China Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei Anhui Province 230039 China

ISBN: (纸本)9781450315463

In this paper, we present a novel idea to solve maximum flow problem in the directed networks. Given a directed flow network which we call original network here, we propose a method of Contracting Neighbor-node-set Approach (CNA) based on Quotient Space Theory. It selects some nodes from fine-grained original network as equivalence class to form a new node in the new network. The coarse-grained new network is called quotient network. Then we apply classic algorithms on quotient network to solve the maximum flow of original network. The performance in practice of our algorithm is better than that of classic algorithms and the method of simplifying network. Experimental results show that CNA can approximate accurately solve the maximum flow of original network . The correctness of maximum flow is over 95%. At the same time, the node scale reduces to 55.45% of node scale of original network and edge scale reduces to 32.10% of edge scale of original network, averagely. Copyright © 2012 ACM.

关键词： Equivalence classes

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Secure two-party computation of the quadratic function's extreme minimal value

Secure two-party computation of the quadratic function's ext...

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2012 9th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2012

作者： Fen, Wu Hong, Zhong Runhua, Shi Hongsheng, Huang School of Computer Science and Technology Anhui University Anhui China Key Laboratory of Intelligent Computing and Signal Processing Anhui University Ministry of Education Anhui China Department of Operation and Maintence in China Mobile Xuancheng China

ISBN: (纸本)9781467300223

Privacy-Preserving Computational Geometry (PPCG) is a special Secure Multi-party Computation, which is a hot research in information security. This paper presented a special PPCG problem of secure two-party computing the quadratic function's extreme minimal value on a secret interval. Based on Paillier's additive homomorphic and secure comparison protocol, a novel protocol for this problem is proposed. Furthermore, its correctness, security and efficiency are analyzed. The analysis results show that the proposed protocol is much more efficient than current protocol, which can be applied in some military and commercial fields. © 2012 IEEE.

关键词： Computational geometry

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Novel algorithm for enhancement of hand vein images based on adaptive filtering and retinex method

Novel algorithm for enhancement of hand vein images based on...

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International Conference on Information Science and Technology (ICIST)

作者： Hua-Bin Wang Liang Tao Key Laboratory of Intelligent Computing & Signal Processing Ministry of Education Anhui University Hefei Anhui China

Based on adaptive filtering and retinex method, this paper presents a novel algorithm for Enhancement of hand vein images. First of all, the principle of the near-infrared hand vein image acquisition is introduced. Secondly, the retinex method is used to normalize hand vein images, and the adaptive smoothing method is selected to estimate the illumination. Thirdly, Gray cosine transform is used to enhance the discrimination of the skin and the vein in hand vein images. Finally, a determination criterion of hand vein is established to remove the false vein blocks from the segmented hand vein images. We developed a hand vein recognition system in Microsoft VC6.0 and the experimental results demonstrate the high efficiency of the proposed algorithm in runtime and correct recognition rate.

关键词： Veins Image segmentation Smoothing methods Lighting Skin Histograms Adaptive filters

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Rate-embedded differential space-frequency codes based on cyclic delay diversity

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Journal of Computational Information Systems 2012年第1期8卷 151-158页

作者： Zhang, Hongwei Xu, Lei Li, Xiaohui Lu, Lu Key Lab of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei 230039 China Anhui Public Security Department Hefei 230061 China

The conventional differential space-frequency codes (DSFC) based on cyclic delay diversity (CDD) only could achieve the same transmission rate with that of a single transmit antenna system, the spectral efficiency was low. To improve the spectral efficiency in a non-coherent multiple antenna system, the advantage of CDD is considered fully in this paper and then a rate-embedded differential space-frequency coding scheme based on grouped CDD is proposed. In the proposed scheme, all transmit antennas are partitioned into several groups firstly, the conventional cyclic delays are adopted to achieve spatial diversity in each group, those symbols among different groups are transmitted differentially with low rate and high rate message matrices alternately, consequently high rate transmission is obtained. Simulation results verify that, compared with the conventional DSFC based on CDD, the proposed coding scheme can achieve obviously higher transmission rates and better error performances. © 2012 Binary Information Press January 2012.

关键词： Spectrum efficiency

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Granularity analysis of fuzzy soft set

Granularity analysis of fuzzy soft set

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7th International Conference on Rough Sets and Knowledge Technology, RSKT 2012

作者： Yao, Dengbao Wang, Cuicui Mao, Junjun Zhang, Yanping School of Mathematical Sciences Anhui University Hefei 230039 China Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei 230039 China Department of Computer Science University of Houston Houston TX 77204-3010 United States

ISBN: (纸本)9783642318993

Fuzzy soft set (FSs) is a novel mathematical tool, in order to describe and measure uncertain information of FSs perfectly, granularity analysis based on covering about FSs is originally discussed in this paper. Firstly, the α-dominance relation between any two objects is built by constructing the possibility degree or the weighted possibility degree after standardization, thus α-dominance class and α-covering approximation space could be generated on this relation. Secondly, granular capacity is proposed to measure the granular information of variable precision through introducing concepts of the description set and the indistinguishability set, Finally, an illustrative example is analysed to reflect dynamic changes of uncertain information under different granular structure. © 2012 Springer-Verlag.

关键词： Set theory

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Contracting community for computing maximum flow

Contracting community for computing maximum flow

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IEEE International Conference on Granular computing (GRC)

作者： Yanping Zhang Xiansheng Xu Bo Hua Shu Zhao School of Computer Science and Technology Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei China

In this paper, we propose a novel method named Contracting Community Approach (CCA) to get the maximum flow of flow network. Firstly, we contract communities in the original network. Then, we apply classic algorithms on the contracted network to approximately solve the maximum flow problem. Experimental results show that the efficiency of the proposed algorithm. For sparse networks, the size of network is reduced to 58.38% averagely and the correctness of maximum flow is over 95%. For middle dense networks, the size of network is reduced to 65.77% averagely. For dense networks, the size of network is reduced to 64.84% averagely. And the correctness of maximum flow even reach 100% both in many middle dense and dense cases in our experiments.

关键词： educational institutions Artificial neural networks Video recording

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