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International Conference on Network Applications Protocols and Services (NETAPPS)

作者： Norziana Jamil Sera Syarmila Sameon Ramlan Mahmood Department of System and Networking College of Information Technology Universiti Tenaga Malaysia (UNITEN) Kajang Selangor Darul Ehsan Malaysia Faculty of Science Computer and Information Science Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia

Wireless sensor networks have received a great attention since they emerged as new ways of communicating and distributing information in wireless network. However the security aspect of wireless sensor network remains an issue, namely authentication, key management and secure localization. Since the communication of wireless sensor is on broadcast basis, researchers are focusing on how to design an efficient authentication scheme since the data might lost during the transmission and this is crucial for entity authentication prior the actual communication. Entity or user authenticity is important to avoid forgery and replay attack. This paper will focus on authentication by investigating three authentication schemes based on user authentication for Wireless Sensor Network. We identify their weakness and we finally introduce a new scheme which is based on identity-bits commitment for authentication that overcomes problems identified in studied schemes. A basic security analysis is followed to support the strength of the scheme in a real deployment.

关键词： Authentication Wireless sensor networks Base stations Resistance Monitoring Forgery

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Classification of hand postures based on 3D vision model for human-robot interaction

Classification of hand postures based on 3D vision model for...

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19th IEEE International Conference on Robot and Human Interactive Communication, RO-MAN 2010

作者： Takimoto, Hironori Yoshimori, Seiki Mitsukura, Yasue Fukumi, Minoru Faculty of Computer Science and System Engineering Communication and Engineering Okayama Prefectural University 111 Kuboki Soja Okayama 719-1197 Japan Faculty of Engineering Nippon Bunri University 1727 Ichigi Oita 870-0397 Japan Graduate School of Bio-Application and Systems Engineering Tokyo University of Agriculture and Technology 2-24-16 Naka-cho Higashi-koganei Tokyo 184-8588 Japan Dept. of Information and Science Intelligent Systems University of Tokushima 2-1 Minami-josanjima Tokushima 770-8506 Japan

ISBN: (纸本)9781424479917

In this paper, a method for hand posture recognition, which is robust for hand posture changing in an actual environment, is proposed. Conventionally, a data glove device and a 3D scanner have been used for the feature extraction of hand shape. However, the performance of each approach is affeected by hand posture changing. Therefore, this paper proposes the posture fluctuation model for efficient hand posture recognition, based on 3D hand shape and color feature obtained from a stereo camera. A large set of dictionary for posture recognition is built by various leaned hand images which were auto-created from one scanned hand image, based on plural proposed models. In order to show the effectiveness of proposed method, performance and processing times for posture recognition are compared to conventional method. In addition, we perform the evaluation experiment by using the Japanese sign language. © 2010 IEEE.

关键词： Human robot interaction

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Proposal and evaluation for wireless sensor network which use terminal that eliminated receiver circuit

Proposal and evaluation for wireless sensor network which us...

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International Conference on Ubiquitous and Future Networks, ICUFN

作者： Hiroaki Nose Kazumasa Mizuta Hisayoshi Kunimune Miao Bao Masaaki Niimura Yasushi Fuwa Yasushi Yoshikawa Department of Computer and System Engineering Nagano Prefectural Institute of Technology Ueda Japan Graduate School of Science and Technology Shinshu University Nagano Japan Epson Toyocom Corporation Hino Japan Seiko Epson Corporation Suwa Japan Faculty of Engineering Shinshu University Nagano Japan

Sensor network terminals are installed in large numbers in the field and transmit data periodically by radio. Such terminals must be miniaturized, and save power so that each device can operate by battery for several years. As one way to satisfy these two conditions, in this research we propose a terminal design which eliminates the receiver circuit. Because there is no receiver circuit, circuitry can be miniaturized, and power can be saved because there is no need to consume power to receive signals. However, the terminals cannot perform carrier detection and reception acknowledgement because there is no receiver circuit. We propose following two new protocols to solve this problem.

关键词： Protocols Receivers Delay Power demand Zigbee Data models

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Object recognition using visuo-affordance maps

Object recognition using visuo-affordance maps

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2010 IEEE/RSJ International Conference on Intelligent Robots and systems

作者： Arjan Gijsberts Tatiana Tommasi Giorgio Metta Barbara Caputo Department of Robotics Brain and Cognitive Sciences Italian Institute of Technology Genoa Italy Centre Du Parc Idiap Research Institute Martigny Switzerland Department of Communication Computer and System Sciences Faculty of Engineering University of Genova Genoa Italy

One of the major challenges in developing autonomous systems is to make them able to recognize and categorize objects robustly. However, the appearance-based algorithms that are widely employed for robot perception do not explore the functionality of objects, described in terms of their affordances. These affordances (e.g., manipulation, grasping) are discriminative for object categories and are important cues for reliable robot performance in everyday environments. In this paper, we propose a strategy for object recognition that integrates both visual appearance and grasp affordance features. Following previous work, we hypothesize that additional grasp information improves object recognition, even if we reconstruct the grasp modality from visual features using a mapping function. We considered two different representations for the grasp modality: (1) motor information of the hand posture while grasping and (2) a more general grasp affordance descriptor. Using a multi-modal classifier we show that having real grasp information significantly boost object recognition. This improvement is preserved, although to a lesser extent, if the grasp modality is reconstructed using the mapping function.

关键词： Visualization Training Object recognition Image reconstruction Kernel Grasping Robots

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A new language for geographic information systems querying

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Journal of Applied Sciences 2010年第11期10卷 887-894页

作者： Meddah, F.G. Belbachir, H. Laurini, R. Laboratory of System Signal and Data Department of Computer Science Faculty of Science University of Science and Technology Oran Mohammed Boudiaf USTO P.O. Box 1505 El Mnouar Bir el Djir Oran Algeria Liris Laboratory Insa Lyon 69621 - Villeurbane Cedex France

This study proposed a new language which offers the possibility to query Geographic Information systems (GIS) with visual queries. Following the progress of the society and the development of technology, there is much more demand for geographic information. But, most of the Geographic Information systems (GIS) available now are geared toward professionals. They do not have a friendly query interface and only well-trained persons can get information from them. Ordinary people cannot benefit from GIS directly. So, it is valuable to construct an easy-to-use visual query system to retrieve geographic information. To address this problem, we have developed a new visual language. A query is formulated in this language by successive selections of icons and metaphors. A prototype running ENVIS has been realized, which allows users to query experimental data by following a SQL-like SELECT-FROM-WHERE scheme. © 2010 Asian Network for Scientific Information.

关键词： Geographic information systems

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Integration of heterogeneous data sources

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Journal of Applied Sciences 2010年第22期10卷 2923-2928页

作者： Ougouti, N.S. Belbachir, H. Amghar, Y. Benharkat, N.A. System Signal and Data Laboratory Departement of Computer Science Faculty of Science University of Science and Technology Oran Mohamed Boudiaf USTO P.O. Box 1505 El MNaouer Oran Algeria LIRIS UMR 5205 Insa of Lyon 7 Avenue Jean Capelle F-69621 Villeurbanne CEDEX France

Access to distributed, heterogeneous and autonomous information sources, becomes possible with the Internet. These information sources are distinguished by the nature of information, namely, the ontological domain to which they belong but also by the type of media they are issues, such as image, text, video, etc. With the advent of semantic web, new opportunities in multi-sources integration are emerging and many approaches are revisited with taking into account the new requirements. Also, there is the use or reuse of datawarehouses, mediators and peer-to-peer systems. Our project aim to propose a distributed and open system for indexing and searching multimedia content (DIOSYS) and especially an integration system based on the Peer-to-peer paradigm. In this study, we propose a state of the art of the integration problem by examining the most representative approaches of the three currents and we will try to summarize this study with use of tables after having presented and justified a set of criteria. © 2010 Asian Network for Scientific Information.

关键词： Ontology

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Study on Reduction of Steady-state Impedance in Magnetic Shielding Type Superconducting Fault Current Limiter

Study on Reduction of Steady-state Impedance in Magnetic Shi...

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International Conferece on Electrical Machines

作者： Mukai, Eiichi Tada, Akio Faculty of Information Sojo University Dept. of Computer System Technology Japan

ISBN: (纸本)9781424417353

A magnetic shielding type superconducting fault current limiter (MSFCL) has undesirable leakage impedance and thus the voltage drop relating to the leakage impedance occurs in the steady-state operation (the standby condition of a fault). Therefore, this paper proposes a divided MSFCL model to reduce the value of the leakage impedance in the steady-state operation. The four-divided model of MSFCL was actually constructed. Then experiments were carried out to demonstrate the advantage of the divided model. Moreover, the divided model was compared with a non-divided model with the same turns of the coils. We confirmed the advantage of the divided model through these experiments.

关键词： Superconducting fault current limiters

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Quality of image vs. quantity of data hidden in the image

Quality of image vs. quantity of data hidden in the image

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2009 International Conference on Image Processing, computer Vision, and Pattern Recognition, IPCV 2009

作者： Zaidan, B.B. Zaidan, A.A. Othmarr, Fazidah Raji, R.Z. Mohammed, S.M. Abdulrazzaq, M.M. Department of Computer System and Technology Faculty of Computer Science and Information Technology University of Malaya 50603 Kuala Lumpur Malaysia

ISBN: (纸本)9781601321190

The rapid development of multimedia and internet allows for wide distribution of digital media data. It becomes much easier to edit, modify and duplicate digital information. In additional, digital document is also easy to copy and distribute, therefore it may face many threats. It became necessary to find an appropriate protection due to the significance, accuracy and sensitivity of the information so. In this paper we will overview the use of data hidden techniques in digital images. In particular we will describe on how one can use the human vision system and pure Steganography to increase the she of the data that we want to embed in the image. We will focused on the property of human vision system that help to increase the amount of data hidden in the bitmap (.bmp) image practically, and improve the work by given result and make a brief discussion on this result Quality of Image vs. Quantity of Data hidden in the Image represents a challenge, in fact quality of image and the quantity of data hidden work in reverse side once we try to increase the amount of data hidden the image quality will be effected, in this research paper we will try to study the impact of increase the data hidden on the quality of image, the author test the result with a specialist on the area of image processing as a survey to insure the quality of the image being a subject for suspecting about a fabrications or distortions, in the next stage we will work on the 5 * LSB m a special images or specific areas.

关键词： Steganography

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A new segmentation on skew document

A new segmentation on skew document

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13th World Multi-Conference on systemics, Cybernetics and Informatics, WMSCI 2009, Jointly with the 15th International Conference on Information systems Analysis and Synthesis, ISAS 2009

作者： Fei, Xiaolei Dong, Mingchui Faculty of Science and Technology University of Macau China Institute of System and Computer Engineering of Macau China

ISBN: (纸本)1934272620

Severe image skewness, which is inevitable in text image acquiring, increases difficulties in image segmentation and decreases character recognition accuracy. In this paper, an improved skew angle estimation technique is presented. In addition, a novel technique of detecting and extracting text from camera-captured images is proposed to solve the following major obstacles in realizing the visual translation: low resolution, various brightness or grayscale, and perspective distortion, and moreover, involuted layouts and interaction of content mixed with the colorful background. As a result, the higher accuracy of camera-based visual translation is witnessed from the obtained testing results.

关键词： Character recognition

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Current problems of substitution techniques of audio steganography

Current problems of substitution techniques of audio stegano...

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2009 International Conference on Artificial Intelligence and Pattern Recognition, AIPR 2009

作者： Zamani, Mazdak Manaf, Azizah Abdul Ahmad, Rabiah Faculty of Computer Science and Information System University of Technology Malaysia College of Science and Technology University of Technology Malaysia Centre for Advanced Software Engineering University of Technology Malaysia

ISBN: (纸本)9781615676576

A wide range of steganography techniques has been described in this literature. Our paper sets the main focus on the evaluation of transparency, robustness and capacity of the embedding function of Substitution Techniques of digital audio steganography algorithms. Here, beside the evaluation of embedding parameters for the existing techniques, two problems -weaknesses- of Substitution Techniques are investigated which if they could be solved, the large capacity - strength- of Substitution Techniques would be practical.

关键词： Steganography

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