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IEEE China Summit & International Conference on signal and Information processing (ChinaSIP)

作者： Yan Cao Jing Zhang Qi Tian Li Zhuo Qianlan Zhou Signal and Information Processing Laboratory Beijing University of Technology Beijing China Department of Computer Science University of Texas at San Antonio TX USA Collaborative Innovation Center of Electric Vehicles in Beijing Beijing China

ISBN: (纸本)9781479919499

The researches on saliency detection for common images have been thoroughly explored in recent years, but little attention has been paid to hyperspectral images. However, salient region detection can contribute to finding significant targets in hyperspectral images. In this paper, spectral saliency is introduced to the spectral domain for detecting targets in hyperspectral images, which are computed by expanding the Itti's visual attention model. Firstly, spatial and spectral features are extracted from hyperspectral image. The conspicuity feature of the first three principal components, orientations, spectral angle and visible spectral band opponent are computed to sum into a saliency map. Finally, salient targets are detected by winner-take-all strategy finding the region with the highest value in the saliency map. Experimental results show that the proposed method have better effectiveness of target detection compared with the method based on RGB image and visible spectrum.

关键词： Decision support systems Indexes Erbium

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Domain adaptation for video steganalysis against motion vector based steganography

Domain adaptation for video steganalysis against motion vect...

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2014 International Conference on Applied sciences, Engineering and technology, ICASET 2014

作者： Wang, Ke Ren Li, Wen Xiang National Key Laboratory of Science and Technology On Blind Signal Processing Chengdu China Zhengzhou Information Science and Technology Institute Zhengzhou China

ISBN: (纸本)9783038351849

Video steganalysis takes effect when videos corrupted by the target steganography method are available. Nevertheless, classical classifiers deteriorate in the opposite case. This paper presents a method to cope with the problem of steganography method mismatch for the detection of motion vector (MV) based steganography. Firstly, Adding-or-Subtracting-One (AoSO) feature against MV based steganography and Transfer Component Analysis (TCA) for domain adaptation are revisited. Distributions of AoSO feature against various MV based steganography methods are illustrated, followed by the potential effect of TCA based AoSO feature. Finally, experiments are carried out on various cases of steganography method mismatch. Performance results demonstrate that TCA+AoSO feature significantly outperforms AoSO feature, and is more favorable for real-world applications. © (2014) Trans Tech Publications, Switzerland.

关键词： Steganography

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Approaching the ideal quantum key distribution with two-intensity decoy states

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Physical Review A 2015年第2期92卷 022332-022332页

作者： Chun-Hui Zhang Sun-Long Luo Guang-Can Guo Qin Wang Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China Academy of Mathematics and Systems Science Chinese Academy of Sciences 100190 Beijing China Key Laboratory of Quantum Information University of Science and Technology of China Hefei 230026 China

We present a scheme for the practical decoy-state quantum key distribution with heralded single-photon source. In this scheme, only two-intensity decoy states are employed. However, its performance can approach the asymptotic case of using infinite decoy states. We compare it with the standard three-intensity decoy-state method, and through numerical simulations, we demonstrate its significant improvement over the three-intensity method in both the final key rate and the secure transmission distance. Furthermore, when taking statistical fluctuations into account, a very high key generation rate can still be obtained even at a long transmission distance.

关键词： QUANTUM mechanics PHOTON number COMPUTER simulation DISTRIBUTION (Probability theory) PARAMETER estimation

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Performances comparison of RFID anti-collision algorithms

Performances comparison of RFID anti-collision algorithms

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2014 International Conference on Multimedia Computing and Systems, ICMCS 2014

作者： Kalache, Mohamed Aissa Fergani, Lamya Speech Communication and Signal Processing Laboratory Faculty of Electronic and Computer Science University of Science and Technology Houari Boumediene Algiers Algeria

ISBN: (纸本)9781479938254

In RFID systems, one of the problems that we must solve is the collision between tags which lowers their efficiency. Two main approaches to tag collision are generally adopted: ALOHA and Tree algorithms. This paper reviews several existing anti-collision algorithms and compares their performances through different simulation experiments. © 2014 IEEE.

关键词： Collision avoidance

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Hybrid color image steganography method used for copyright protection and content authentication

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Journal of Information Hiding and Multimedia signal processing 2015年第4期6卷 686-696页

作者： Lyu, Wan-Li Chang, Chin-Chen Chou, Yeh-Chieh Lin, Chia-Chen Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Computer Science and Technology Anhui University Hefei230039 China Department of Information Engineering and Computer Science Feng Chia University 100 Wenhwa Rd Seatwen Taichung40724 Taiwan Department of Computer Science and Information Management Providence University Taichung43301 Taiwan

In this paper, we proposed a hybrid image data hiding method used for watermarking applications in order to make sure the hidden dual watermarks survive after the image manipulation and enhancement processes. To achieve this goal, the proposed method is divided into two phases. In the first phase, the YCbCr color space is exploited, and, then, LSB techniques are used to embed the first level watermark bits in the YCbCr channel. In the second phase, the modification direction method is used to embed the second level watermark bits in the RGB channel. The experimental results confirmed that the proposed method resists most geometric attacks more effectively than Lusson et al.'s method. Therefore, the method is suitable for protecting the ownership of images and integrity of the potential tampered images. © 2015 ISSN.

关键词： Steganography

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Adaptive optimal trajectory tracking control of nonlinear affine in control system with unknown internal dynamics 33

Adaptive optimal trajectory tracking control of nonlinear af...

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Proceedings of the 33rd Chinese Control Conference, CCC 2014

作者： Tian, Yang Wang, Haoping Vasseur, Christian Sino-French Joint Laboratory of Automation and Signal Processing School of Automation Nanjing University of Science and Technology Nanjing China Sino-French Joint Laboratory of Automation and Signal Processing LAGIS- CNRS UMR 8219 Lille University of Science and Technology Villeneuve d'Ascq France

ISBN: (纸本)9789881563842

This paper presents a new adaptive optimal nonlinear control for trajectory tracking of nonlinear affine-in control systems with unknown internal dynamics. The referred proposed controller which is based on a L2 norm prescribed to minimized a trajectory tracking error and a time-delay estimation technique based nonlinear systems unknown dynamics estimations has adaptive and optimal characters. Moreover with the systems output feedback, the proposed controller dose not require any knowledge of nonlinear internal dynamics ensuring the trajectory tracking of systems multi-outputs. Finally, to validate the proposed method, a satellite numerical example illustrates the performance and robustness. © 2014 TCCT, CAA.

关键词： Controllers

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Color PNG Image Authentication Scheme Based on Rehashing and Secret Sharing Method

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Journal of Information Hiding and Multimedia signal processing 2015年第3期6卷 523-533页

作者： Lyu, Wan-Li Chang, Chin-Chen Wang, Feng Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Computer Science and TechnologyAnhui University Hefei230039 China Department of Information Engineering and Computer Science Feng Chia University 100 Wenhwa Rd Seatwen Taichung40724 Taiwan Department of Mathematics and Physics Fujian University of Technology Fuzhou Fujian350108 China

An authentication scheme that uses rehashing and secret sharing methods to verify the reality of a color image’s content is proposed in this paper. First, the proposed scheme uses Shamir’s secret sharing method to share image features. Second, the proposed scheme innovatively utilizes the rehashing method to overcome easy collisions of the random numbers to enhance the effectiveness against attacks. Third, the proposed method utilizes Portable Network Graphics images to hide authentication messages. Using the rehashing method, the collisions take up little in address space, making the process suitable for processing authentication messages. The experimental results indicated that the proposed scheme had very low false acceptance and rejection ratios and verified that the rehashing method can be used in image authentication applications. © 2009 ISSN 2073-4212.

关键词： Authentication

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Substrate integrated waveguide filter with improved stopband performance using LTCC technology

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Progress In Electromagnetics Research C 2014年 54卷 155-162页

作者： Zhang, Ping-Juan Li, Min-Quan College of Mathematics Physics and Information Engineering Anhui Science and Technology University Chuzhou233100 China Key Laboratory of Intelligent Computation and Signal Processing Ministry of Education Anhui University Hefei230039 China

A novel multi-layer third-order substrate integrated waveguide (SIW) bandpass filter with improved lower stopband performance is proposed. TE201-mode in folded-SIW cavity is utilized to implement negative cross coupling, and the TE101-mode is taken as a non-resonating node (NRN) for implementing bypass coupling. A circular aperture etched on the middle metal layer is used to realize coupling between source and the second SIW cavity. Then, three transmission zeros located below the passband can be obtained to improve stopband attenuation. Meanwhile, better spurious suppression performance above passband is achieved. A filter sample is designed and fabricated with multi-layer low-temperature co-fired ceramic (LTCC) technology. The measured S-parameters agree well with the simulated ones, with its predicted good performance. © 2014 Electromagnetics Academy. All rights reserved.

关键词： Substrate integrated waveguides

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Unknown input estimation based sliding mode control for EGR-VGT diesel engine air-path

Unknown input estimation based sliding mode control for EGR-...

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International Conference on Systems and Control (ICSC)

作者： Yanyan Shen Haoping Wang Yang Tian Qiankun Qu Abdel Aitouche Ahmed El Hajjaji Sino-French laboratory of Automatic Control and Signal Processing (LaFCAS) School of Automation Nanjing University of Science and Technology China LaFCAS Lille University Nord of France Lille France Universite de Picardie Jules Verne Amiens Hauts-de-France FR

In this paper, we propose an unknown input estimation based sliding mode control (UIESMC) approach for air path in the EGR-VGT diesel engine. This proposed UIESMC controller is adopted to track the intake and exhaust manifold pressures, and compressor mass flow rate when under unknown inputs, which include the un-modeled dynamics, modeled parametric uncertainties and the unknown faults. These unknown inputs are estimated by PI observer by applying high gain at the integral term to satisfy the requirements of both estimation accuracy and less sensitivity to measure noises. This paper finally inverted the EGR and VGT gas mass flow rates into their corresponding valves positions by flow-position transformation module. Finally, through co-simulation results from AMESim and MATLAB/Simulink, the effectiveness and robustness of the proposed control strategy is demonstrated.

关键词： Manifolds Mathematical model Valves Diesel engines Fuels Observers

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Novel M-ary coded modulation scheme based on constellation subset selection

Novel M-ary coded modulation scheme based on constellation s...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Kun Yan Hsiao-Chun Wu Haiyan Zhou Hailin Xiao Guangxi Key Laboratory of Wireless Wideband Communication & Signal Processing Guilin University of Electronic Technology Guilin P. R. China School of Electrical Engineering and Computer Science Louisiana State University Baton Rouge Louisiana U. S. A

In this paper, a novel adaptive coded-modulation scheme, namely M-ary coded modulation, which is spectrally-efficient and can facilitate variable data-rates, is proposed to meet different quality-of-service (QoS) requirements for wireless multimedia applications. An efficient constellation subset selection algorithm incorporated with a novel M-ary coding technique is proposed to generate convolutional codes for different constellation subsets. The studies on the theoretical and practical aspects of our proposed adaptive coded-modulation scheme are presented. Compared with other existing adaptive coded-modulation methods, our scheme offers more flexibilities. According to Monte Carlo simulation results, our new M-ary coded-modulation scheme not only can satisfy the predetermined symbol-error-rate (SER) requirement, but also can significantly enhance the communication quality in terms of bit error rate and throughput.

关键词： Modulation Convolutional codes Cascading style sheets Channel coding Wireless communication Throughput

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