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Research on an Steganographic Algorithm based on image Edge

Research on an Steganographic Algorithm Based on Image Edge

引用

international conference on internet technology and Applications (iTAP)

作者： Gouxi Chen Min Cao Donglai Fu Qiaomei Ma

We propose a kind of steganographic algorithm based on the edge processing in this paper. Firstly, the cover is marginalized and reconstructed through mathematical morphology and block markers, then embedding the secret message into the cover picture successfully with F5 steganographic algorithm. The experiments demonstrate that the different cover image use this algorithm to hide the secret information which holds predominant advantages, such as the small changes in image quality, strong ability in anti-attack, and the secret information can be extracted completely from the carrier image. The above advantages make a broad application prospect.

关键词： Morphology image edge detection Aggregates Partitioning algorithms Algorithm design and analysis signal processing algorithms PSNR

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QoS Routing for Heterogeneous Mobile Ad Hoc Networks based on Multiple Exponents in the Definition of the Weighted Connectivity Index

QoS Routing for Heterogeneous Mobile Ad Hoc Networks Based o...

引用

international IEEE conference on signal-image Technologies and internet-based System

作者： Kunagorn Kunavut Teerapat Sanguankotchakorn Department of Telecommunications Science Faculty of Science and Technology Assumption University Thailand Telecommunications Field of Study School of Engineering and Technology Asian Institute of Technology Thailand

In decades, lots of QoS routing algorithms have been proposed to let each mobile node in ad hoc networks to find paths based on QoS metrics which are mainly bandwidth and delay. We also proposed to use both Connectivity Index (CI) and weighted CI, the mathematically combination of link capacity and CI, as the QoS metrics in ad hoc networks. CI is widely used topological index in chemical and mathematical applications. By considering this CI in path computation process, the returned paths are more stable which directly affect throughput and packet delivery ratio of the networks. However, this CI is computed in one dimension only where the exponent or a in the definition of CI is set to-(1/2). CI with this a = -(1/2) is the most successful topological index which has received lots of attentions from chemists and mathematicians. However, the other exponents were also studied as the special case of CI. In this work, we propose to use Shortest-Highest Path algorithm to select the best feasible path in terms of the highest weighted CI and shortest delay link where multiple exponents in weighted CI are applied. We construct simulations in various scenarios to study the effects of these multiple exponents on the heterogeneous ad hoc networks which is more realistic. Since in real applications, multiple types of nodes exist and they usually have different capabilities. Thus, the QoS routings which perform well in homogeneous networks may not be much effective in heterogeneous networks. From the simulation results, it is obvious that Shortest-Highest Path algorithm with weighted CI can also improve the network performances in heterogeneous ad hoc networks.

关键词： Routing Delay Quality of service Indexes Ad hoc networks Bandwidth Throughput

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Intelligent transportation system based on SIP/ZigBee architecture

Intelligent transportation system based on SIP/ZigBee archit...

引用

international conference on image Analysis and signal Processing, IASP

作者： Jianhe Zhou Chungui Li Zengfang Zhang School of Information Engineering Wuhan University of Technology Wuhan Hubei China Department of Computer Engineering Guangxi University of Technology Liuzhou Guangxi China

In a heterogeneous network environment, constructing applications of remote distributed intelligent transportation system (ITS) are faced with complex communication problems proposed by online management, data acquisition and the coordination control of traffic node devices. Therefore, a framework based on SIP/ZigBee architecture is proposed. By using SIP and its extensions, a seamless convergence of traffic measurement and control network between the internet and a short-range wireless sensor and actuator networks (WSAN) can be achieved. The application result shows that various remote communications and control operations of ITS distributed nodes can be unified and simplified.

关键词： Zigbee Monitoring internet Servers Logic gates Protocols Actuators

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Using RLS adaptive algorithm for packet loss replacement in VOIP

Using RLS adaptive algorithm for packet loss replacement in ...

引用

2011 international conference on image Processing, Computer Vision, and Pattern Recognition, IPCV 2011

作者： Miralavi, Seyed Reza Ghorshi, Seyed Mortazavi, Mohammad School of Science and Engineering Sharif University of Technology International Campus Kish Island Iran

ISBN: (纸本)9781601321916

In this paper, a low order recursive linear prediction method and recursive least square as an adaptive filter (LP-RLS) are introduced to predict the speech and the excitation signals. In real-time packet-based communication systems, one major problem is misrouted or delayed packets which results in degraded perceived voice quality. If packets are not available on time, the packet is known as lost packet. The easiest task of a network terminal receiver is to replace silence for the duration of lost speech segments. In a high quality communication system, to avoid quality reduction due to packet loss, a suitable method and/or algorithm is needed to replace the missing segments of speech. The evaluation results show that the proposed method has a lower mean square error (MSE) and higher signal to noise ratio (SNR) compared to the other methods. This particular method also outperforms the low order recursive linear prediction method and normalized least mean square (LP-NLMS).

关键词： Mean square error

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Remote monitoring and control system of solar street lamps based on ZigBee wireless sensor network and GPRS

Remote monitoring and control system of solar street lamps b...

引用

international conference on Electric and Electronics

作者： Lian, Yongsheng Lin, Peijie Cheng, Shuying Institute of Micro/Nano Devices and Solar Cells School of Physics and Information Engineering Fuzhou University Fuzhou 350108 China

ISBN: (纸本)9783642216961

In order to avoid the shortcomings and deficiencies of solar street lamp systems at present market, in this paper, a new kind of solar street lamps monitoring & control system is designed. By combining ZigBee technology with MPPT algorithm in the design of solar street lamp controller, the wireless monitoring network can be constituted by solar lamps themselves, and the conversion efficiency of solar energy is improved. The working state of solar lamps distributed in one area can be monitored and controlled by the remote monitoring center through GPRS and internet. The system consists of three main parts: solar street lamp controller, ZigBee wireless network, remote monitoring center. By designing the system hardware and software, and testing the experimental result, it is proven that the system is highly reliable, cost-effective, low power consumption, fast establishing and has a broad application prospect. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： Controllers

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Low complexity high security image encryption based on Nested PWLCM Chaotic Map

Low complexity high security image encryption based on Neste...

引用

international conference for internet technology and Secured Transactions (ICITST)

作者： Hadi H Abdlrudha Qassim Nasir Computer Sceince Department Faculty of Information Technology Petra Private University Amman Jordan Department of Electrical and Computer Engineering University of Sharjah Sharjah UAE

Chaotic systems produce pseudo-random sequences with good randomness; therefore, these systems are suitable to efficient image encryption. In this paper, a low complexity image encryption based on Nested Piece Wise Linear Chaotic Map (NPWLCM) is proposed. Bit planes of the grey or color levels are shuffled to increase the encryption complexity. A security analysis of the proposed system is performed and presented. The proposed method combine pixel shuffling, bit shuffling, and diffusion, which is highly disorder the original image. The initial values and the chaos control parameters of NPWLCM maps are derived from external secret key. The cipher image generated by this method is the same size as the original image and is suitable for practical use in the secure transmission of confidential information over the internet. The experimental results of the proposed method show advantages of low complexity, and high-level security.

关键词： Encryption Chaotic communication Correlation Entropy

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2011 international conference on Intelligent Computing and Information Science, ICICIS 2011

2011 International Conference on Intelligent Computing and I...

引用

2011 international conference on Intelligent Computing and Information Science, ICICIS 2011

ISBN: (纸本)9783642181337

The proceedings contain 112 papers. The special focus in this conference is on Computing and Information Science. The topics include: Unified electronic currency based on the fourth party platform integrated payment service;research on SaaS and web service based order tracking;evaluation of the industrial economic benefits based on TOPSIS;a DS-UWB cognitive radio system based on bridge function smart codes;the application of virtual reality on distance education;analysis towards VMEM file of a suspended virtual machine;study on feed-forward MAP-based vector control method of vehicle drive motor;circulant graph modeling deterministic small-world networks;the design of logistics information matching platform for highway transportation;hybrid schema matching for deep web;RFID-based critical path expert system for agility manufacture process management;research on the evolutionary strategy based on AIS and its application on numerical integration;research on technique of the cyberspace public opinion detection and tracking;a high performance 50% clock duty cycle regulator;study on risk of enterprise' technology innovation based on ISM;immune clone algorithm to solve the multi-object problems;foreign language teachers' professional development in information age;framework for classifying website content based on folksonomy in social bookmarking;research on internal damping algorithm of marine inertial navigation system;the adaptability evaluation of enterprise information systems;structural damage alarm utilizing modified back-propagation neural networks;computation of virtual regions for constrained hybrid systems;fault diagnosis of diesel engine using vibration signals;the deflection identify of the oil storage tank;the effect of product placement marketing on effectiveness of internet advertising;research on routing selection algorithm based on genetic algorithm;discriminative novel information detection of query-focused update summarization;core image coding based on

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internet based subjective assessment of image quality experiment

Internet based subjective assessment of image quality experi...

引用

international conference on systems, signals and image Processing, IWSSIP

作者： Tomasz Grzywalski Adam Łuczak Ryszard Stasinski Department of Electronics and Communications Poznań University of Technology Poznan Poland

In the paper an internet based massive experiment devoted to subjective assessment of images quality is described. The investigations have been based on DSIS method with some modifications induced by the nature of internet poll. Special measures have been undertaken for removing results given by incompetent experiment participants. The huge number of tests allowed for multi-aspect image quality evaluation: 12 deformation effects have been applied to 22 images. The results point at important problems linked with automation of image quality assessment: factors determined by high levels of human visual cognition (e.g. face deformation), surprisingly high impact of local distortions on scores for some tested images, finally, correct modeling of low-level effects, like masking.

关键词： image quality internet Humans Particle measurements Atmospheric measurements Distortion measurement Databases

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Feature extraction of motor imagery EEG signals based on wavelet packet decomposition

Feature extraction of motor imagery EEG signals based on wav...

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IEEE/Institute of Complex Medical Engineering international conference on Complex Medical Engineering

作者： Hu, Dingyin Li, Wei Chen, Xi Image Processing and Intelligent Control Key Laboratory of Education Ministry of China Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781424493241

Feature extraction in brain-computer interface (BCI) work is an important task that significantly affects the success of brain signal classification. In this paper, a feature extraction method of electroencephalographic (EEG) signals based on wavelet packet decomposition (WPD) is used. The coefficients mean of wavelet packet decomposition and wavelet packet energy of special sub-bands are employed as the original features. The Fisher discriminant analysis (FDA) is used to measure the separabilities of those features. The features which had a higher separability will be considered as effective ones and then the final feature vector are formed. A feature vector is obtained by combining the selected features from six channels. Then, the features are classified by using the k-nearest neighbor (k-NN) algorithm. We obtained significant improvement for the speed and accuracy of the classification for data set Ia, which is a typical representative of one kind of BCI competition 2003 data. The classification results have proved the effectiveness of the proposed method. © 2011 IEEE.

关键词： Feature extraction

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An inversion method of significant wave height based on radial basis function neural network

An inversion method of significant wave height based on radi...

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international Workshop on Computational Transportation Science

作者： Liu, Liqiang Fan, Zhichao Tao, Chunyan Dai, Yuntao College of Automation Harbin Engineering University Heilongjiang China College of Science Harbin Engineering University Heilongjiang China

ISBN: (纸本)9780769543352

In view of the question that traditional significant wave height inversion method of ocean wave don't have high precision and its applicable scope is limited, a significant wave height inversion method based on radial basis function neural network is proposed. Assume significant wave height has a linear relationship with the radar image signal-to-noise ratio's square root, radial basis function neural network is adopt to study and to establish relational function between the two, thereby realizing the significant wave height inversion. The network architecture is designed, data center selection network weight setup and network learning method are discussed in detail. The simulation result shows, compared with the traditional inversion method, a better serviceability and the higher significant wave height inversion precision are obtained in this paper. © 2011 IEEE.

关键词： Water waves

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