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International Conference on Mechatronic Science, Electric Engineering and Computer

作者： Yan Zhang Dong Liang Ming Zhu Yining Sun Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education AHU Hefei China Anhui University AHU Hefei China School of Electronics and Information Engineering Anhui University AHU Hefei China Institute of Intelligent Machines Chinese Academy of Sciences CAS Hefei China

ISBN: (纸本)9781479925667

Herein, a new identity recognition method of plantar pressure image (PPI) was investigated based on compressed sensing. During the process of identity recognition, the PPIs were collected with platform system in normal walking speed. The sparse representation of PPI was then obtained according to the sparse basis (i.e., wavelet basis). Finally, measurement vectors were calculated by the Topelitz measurement matrix and the PPI was recognized by compressed sensing classifier. The results showed that the accuracy of identity recognition of PPI based on compressed sensing exceeded 97.76%, demonstrating the effectiveness and stability of the Topelitz-compressed sensing algorithm. Meanwhile, the method used in this study reduced the data storage amount and increased the real-time recognition during the PPI process.

关键词： Accuracy Compressed sensing Sparse matrices Classification algorithms Foot Image recognition Support vector machine classification

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A uniform solution to the independent set problem through tissue P systems with cell separation

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Frontiers of Computer Science 2012年第4期6卷 477-488页

作者： Xingyi ZHANG Xiangxiang ZENG Bin LUO Zheng ZHANG Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Computer Science and TechnologyAnhui UniversityHefei 230039China Department of Computer Science Xiamen UniversityXiamen 361005China Key Laboratory of Image Processing and Intelligent Control Department of Control Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Membrane computing is an emergent branch of natural computing, which is inspired by the structure and the functioning of living cells, as well as the organization of cells in tissues, organs, and other higher order structures. Tissue P systems are a class of the most investigated computing mod- els in the framework of membrane computing, especially in the aspect of efficiency. To generate an exponential resource in a polynomial time, cell separation is incorporated into such systems, thus obtaining so called tissue P systems with cell separation. In this work, we exploit the computational efficiency of this model and construct a uniform family of such tissue P systems for solving the independent set problem, a well-known NP-complete problem, by which an efficient so- lution can be obtained in polynomial time.

关键词： membrane computing tissue P system cell sep- aration independent set problem

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Reconstruction of whisper in Chinese by modified MELP

Reconstruction of whisper in Chinese by modified MELP

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2012 7th International Conference on Computer Science and Education, ICCSE 2012

作者： Huang, Cheng Tao, Xing Yue Tao, Liang Zhou, Jian Bin Wang, Hua Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei 230031 China

ISBN: (纸本)9781467302425

In the present paper, a method for the real-time conversion of whisper to normal phonated speech in Chinese through a multiple excited linear prediction (MELP) analysis-by-synthesis codec is discussed. In the analysis codec processing of whisper speech, parameters from unchanged MELP model are changed, such as the pitch and the formants which aims to reconstruct the target phonated speech using the synthesis codec. Subjective evaluation results show the effectiveness of the technique. © 2012 IEEE.

关键词： Continuous speech recognition

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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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2012 IEEE International Conference on Information Science and Technology, ICIST 2012

作者： Wang, Hua-Bin Tao, Liang Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei Anhui 230039 China

ISBN: (纸本)9781457703454

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. © 2012 IEEE.

关键词： Adaptive filtering

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Design of a new type of broadband antenna with indoor distribution

Design of a new type of broadband antenna with indoor distri...

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2012 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2012

作者： Wang, He-Zhou Wu, Xian-Liang Huang, Zhi-Xiang Zhang, Liang Qin, Kun Qi, Qi Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039 China Hefei Normal University Hefei 230061 China

ISBN: (纸本)9781467321839

Based on the principle of discone antenna, a new type of broadband omnidirectional antenna is presented. According to antenna loading technology, introducing the cone surface profile of the broken line structure and short-circuit load of ways which use three short-circuit branches improve the low-frequency electrical characteristics of the antenna and the bandwidth. A very good miniaturization is achieved which reduces the total size. The physical antenna is produced. The calculated and measured VSWR patterns seem to be in good agreement with each other. The VSWR is less than 1.5 at 800MHz-2600MHz. H plane has an ominidirectional radiation pattern. As to small size and low cost, it will have good market prospects. © 2012 IEEE.

关键词： Directional patterns (antenna)

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A novel anonymous secret sharing scheme based on BP Artificial Neural Network

A novel anonymous secret sharing scheme based on BP Artifici...

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2012 8th International Conference on Natural Computation, ICNC 2012

作者： Zhong, Hong Wei, Xiaodong Shi, Runhua Key Laboratory of Intelligent Computing and Signal Processing Anhui University Ministry of Education China School of Computer Science and Technology Anhui University China

ISBN: (纸本)9781457721311

In an anonymous secret sharing scheme, the secret can be reconstructed without knowledge of which participant hold which share. That is, in such scheme the secret can be recovered from the shares without the identities of shareholders. However, the previous anonymous schemes are not very efficient and the existing bounds make optimization work difficult. In this paper, we present a novel anonymous secret sharing scheme by using BP Artificial Neural Network. The scheme can ensure that the shareholders' identities are completely anonymous when the secret is recovered. Unlike previous schemes, our scheme is an ideal (t, n) threshold scheme which parameter t doesn't have lower bounds and need less storage space. Furthermore, the shares can be chosen by shareholders and the communication between dealer and participants doesn't need secure channel. In addition, the participants can verify the correctness of their shares and the secret S. © 2012 IEEE.

关键词： Neural networks

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A novel distributed machine learning method for classification: Parallel covering algorithm

A novel distributed machine learning method for classificati...

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

作者： Zhang, Yanping Wang, Yuehua Zhao, Shu Anhui University Computer Science and Technology Institute Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Hefei Anhui Province 230039 China

ISBN: (纸本)9783642318993

In this paper, we propose a novel distributed machine learning method: Parallel Covering Algorithm, which is inspired by the module feature of CA (Covering Algorithm). Classic method of CA is presented, and we analyze its independent part. Then we develop the Parallel CA by utilizing its modularity as well as data-set decomposition. Detailed implementation of the parallel computing process is described. In the experiment, three data sets are used to evaluate the Parallel CA, and the comparison with classic CA is also shown in the paper. Speedup and efficiency are two criterions to evaluate the performance of the algorithm. Both the analysis and the comparison indicate that the Parallel CA is more effective than CA. We also empirically compare the results obtained by Parallel SVM on a large data set, and it shows that our proposed algorithm is effective. © 2012 Springer-Verlag.

关键词： Learning algorithms

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Study on the gain media using FDTD and four energy level model

Study on the gain media using FDTD and four energy level mod...

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2012 10th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2012

作者： Bingbing, Sun Hui, Wang Bo, Wu Xiang, Huang Zhi Liang, Wu Xian Key Laboratory of Intelligent Computing and Signal Processing Annui University Hefei 230039 China Department of Physics and Electronic Engineering Hefei Normal University Hefei 230039 China

ISBN: (纸本)9781467317993

In order to investigate the gain media which were widely used in metamaterial, a four energy level model is proposed. We solve three groups of coupled equations: Maxwell equations, rate equations of electronic population and polarization equation. Population inversion and lasing threshlod were observed using numerical experiments based on a novel finite-difference time-domain (FDTD) treatment of the optical field. These results show good agreement with lasing theories and our numerical model can be used as an efficient tool for pursuing novel laser devices. © 2012 IEEE.

关键词： Maxwell equations

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Determination of effective parameters in negative-index optical metamaterials

Determination of effective parameters in negative-index opti...

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2012 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2012

作者： Ding, Min Huang, Zhi-Xiang Wu, Xian-Liang Wang, Wang Wu, Ying-Ying Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039 China Department of Physics and Electronic Engineering Hefei Normal University Hefei 230061 China

ISBN: (纸本)9781467321839

We present an enhanced algorithm based on the Kramers-Kronig (K-K) relations, which extracts the effective parameters such as the electric permittivity Ε and magnetic permeability μ of a composite electromagnetic structure from calculated or measured transmission and reflection data. For the general structure, the retrieved parameters are broadly similar whether obtained by the traditional retrieval algorithm or the improved one. For the multilayer negative-index optical metamaterials, the improved algorithm is competent instead of the traditional one due to the calculation involves a branching problem, and the K-K relations can be applied to remove the problem. © 2012 IEEE.

关键词： Multilayers

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Application of AWE technology combined with higher-order basis functions to broad band electromagnetic scattering problems

Application of AWE technology combined with higher-order bas...

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2012 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2012

作者： Ma, Tao Chen, Ming-Sheng Wu, Xian-Liang Qi, Qi Liu, Yi Hao, Ming-Ming Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei 230039 China Department of Physics and Electronic Engineering Hefei Normal University Hefei 230061 China

ISBN: (纸本)9781467321839

In this paper, the asymptotic waveform evaluation (AWE) technique in conjugation with higher-order basis functions method based on the best uniform approximation theory is applied to solve scattering problems over a broad frequency band. To select the best uniform approximation higher-order basis functions, 3-order Chebyshev basis function is used as an example and applied to solving the electrical field integral equation (EFIE) by the method of moments(MOM). Finally, using AWE technique to solving the discrete linear system obtained by high order basis function to accomplish the scattering analysis of perfectly electrical conductor (PEC) over a broad frequency band. It is shown that the presented method has higher computational precision with lower discretization, and greatly improve the computational efficiency. © 2012 IEEE.

关键词： Radar cross section

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