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4th International conference on Model and Data Engineering, MEDI 2014

ISBN: (纸本)9783319115863

The proceedings contain 31 papers. The special focus in this conference is on Model and Data Engineering. The topics include: Playing with state-based models for designing better algorithms;some issues in modeling user behavior data in systems of engagement;automated failure analysis in model checking based on data mining;a model-driven methodology approach for developing a repository of models;towards a generic framework for the initialization and the observation of socio-environmental models;context-aware verification of a cruise-control system;a multi-agent based approach for composite web services simulation;model-driven generation of multi-user and multi domain choreographies for staging in multiple virtual world platforms;adapting aerial root classifier missing data processor in data stream decision tree classification;leveraging concepts and semantic relationships for language model based document retrieval;a full service approach for multimedia content retrieval;ontology-based user modeling for handicraft woman recommendation;stability assess based on enhanced information content similarity measure for ontology enrichment;algebraic graph transformations for merging ontologies;analysis of trajectory ontology inference complexity over domain and temporal rules;ontology-based context-aware SLA management for cloud computing;mapping XML documents using complex SQL data types;replicated convergent data containers;a novel multidimensional model for the OLAP on documents;scalable spectral clustering with weighted pagerank;efficient algorithm to approximate values with non-uniform spreads inside a histogram bucket;modeling a smart home for elderly;theme identification in RDF graphs and an xquery based model transformation language.

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Quality adaptation using Scalable Video Coding (SVC) in Peer-to-Peer (P2P) Video-on-Demand(VoD) streaming

Quality adaptation using Scalable Video Coding (SVC) in Peer...

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IEEE International conference on multimedia Computing and systems (ICMCS)

作者： Youssef Lahbabi El Hassan Ibn Elhaj Ahmed Hammouch ENSET Mohammed V Souissi University Rabat Morocco National Institute of Posts and Telecommunications (INPT) Rabat Morocco

In this paper we present novel quality adaptation mechanisms using Scalable Video Coding (SVC) over Peer-to-Peer (P2P) Video-on-Demand (VoD) systems. Quality adaptation in the VoD streaming system P2P is done in two phases. First using Layer Level Initialization (LLI) strategy, an initial quality is selected based on the peer's static resources, for example screen resolution, bandwidth and device power. After streaming starts, another set of algorithms called the Layer Level Adjustment (LLA) is used to adapt the video quality to various dynamic parameters of the peers (memory, energy consumption) and the system (block availability, throughput). LLI and LLA are evaluated on Quality of Service (QoS) metrics of layer level SVC using Peersim and JSVM Simulators. Finally, we have ensured perfectly the best QoS for streamable SVC layers by our proposed algorithms which maximize flexibility SVC while taking impact of different resources consumption and affects resilience of P2P streaming systems into consideration.

关键词： Streaming media Static VAr compensators Batteries Complexity theory Scalability Bit rate Random access memory

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content aware resource allocation in OFDM systems for energy efficient video transmission

Content aware resource allocation in OFDM systems for energy...

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IEEE International conference on Consumer Electronics (ICCE)

作者： Emad Danish Varuna De Silva Anil Fernando Chamitha De Alwis Ahmet Kondoz I-Lab Multimedia Communications Research University of Surrey Guildford United Kingdom

For OFDM channels, we propose a content-aware subcarrier allocation scheme for multiuser video transmission that maximizes user perceived quality while minimizing power consumption. The scheme utilizes utility function-based genetic algorithms to solve the multi-objective optimization problem. It significantly outperforms existing methods in terms of perceived quality and consumed power.

关键词： Bit rate Resource management OFDM Genetic algorithms Video recording Quality assessment Joints

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A proposal for remote DTV content presentation and control

A proposal for remote DTV content presentation and control

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IEEE International conference on Consumer Electronics - Berlin (ICCE-Berlin)

作者： Nenad Soskic Davor Rapic Stevan Medic Nikola Kuzmanovic RT-RK Institute for Computer Based Systems Novi Sad Serbia Faculty of Technical Sciences University of Novi Sad Novi Sad Serbia

Improvement and development of handheld devices such as tablets or smartphones opens new possibilities for them to be used in DTV environment. Handheld devices' proliferation has modified the way users watch and perceive TV. Giving users more control over their TV and easier access to additional information from their handheld devices is the focus of this paper. In this paper remote DTV content presentation like live TV, EPG and playback of multimedia content is presented. The paper also presents remote DTV content control such as remote controller with mouse pad and keyboard, EPG control and browsing of media server.

关键词： Digital TV Handheld computers Servers Androids Humanoid robots multimedia communication

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A novel video encryption algorithm-based on speaker voice as the public key

A novel video encryption algorithm-based on speaker voice as...

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IEEE International conference on Control Science and systems Engineering (CCSSE)

作者： Obaida M. Al-Hazaimeh Nouh Alhindawi Nesreen A. Otoum Department of Information Technology AL-BALQA' Applied University Salt Jordan Department of Software Engineering JADARA University Irbid Jordan Department of Information Technology University of PETRA Amman Jordan

Advances in the digital content transmission have been extremely increased in the past few years. In addition, the security and privacy issues of the transmitted data have increasingly an important concern in multimedia technology. In this paper, we propose applicable and secure video encryption algorithm. This makes secure video encryption feasible for realtime application. The proposed algorithm concentrates in general on the symmetric key cryptographic technique. Characteristically, the multimedia technology which has been usually used by public users is resulting in a key exchange problem and normally a trusted intermediate authority takes this responsibility. In this paper, we have proposed a novel video encryption algorithm based on the speaker voice to generate a public key which eliminates the need for a trusted third party for key exchange. The generated public key from the speaker's voice is used to encrypt of the transferred digital multimedia over the open communication channel (i.e. Internet). The experimental results showed that the proposed algorithm is very secure and has on average only 5.4 ms of encryption time per frame, which is significantly smaller compared to the state of the art secure video encryption algorithms.

关键词： Encryption Streaming media multimedia communication Classification algorithms Algorithm design and analysis

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content-aware association control in wireless networks

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Journal of Computational Information systems 2014年第7期10卷 2865-2872页

作者： Sun, Quan Huang, Liusheng Guo, Weijie Xu, Hongli School of Computer Science and Technology University of Science and Technology of China Hefei 230026 China

With the rapid development of wireless technology, it is of increasing interest to support various services in wireless LANs. access control and load balancing are employed to meet the different QoS requirements of different services. Although a number of AP access control schemes and load balancing techniques have been proposed for wireless LANs, few of them have considered the diversity of QoS requirements of different services, which can be used to improve QoS while balancing the traffic load. In this paper, we propose a new association control scheme, which considers the difference among user services' requirements and balances their load among APs. The defined problem CAL (content-aware Association control and Load balancing) is mathematically described as a min-max programming. Since the CAL problem is NP-hard, we propose an α-approximation (α≥2) centralized algorithm CCAL to resolve it. CCAL employs a novel method to simplify the original problem to the Minimum cost Maximum flow problem, which is solved in polynomial time. Extensive evaluations show that the proposed algorithms outperform the conventional schemes in terms of the bandwidth and traffic load. © 2014 Binary Information Press.

关键词： multimedia services

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Aerial videography in built heritage documentation: The case of Post-Independence Architecture of Malaysia

Aerial videography in built heritage documentation: The case...

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International conference on Virtual systems and multimedia

作者： Delas Santano Human Esmaeili Centre for Creative Content and Digital Innovation University of Malaya Kuala Lumpur Malaysia i-Knowmedia Faculty of Creative Multimedia Multimedia University Cyberjaya Malaysia

The Unmanned Aerial Vehicle (UAV) has become increasingly affordable in the market and has been reduced to smaller sizes, providing an entry level UAV for any beginner. For this paper we have utilized the GoPro action camera as the chosen camera, since DJI has an established gimbal for it and also the fact that the GoPro setup is considered the entry level, which is available to anyone and also produces good quality. Recent research collaboration has identified built heritage in Malaysia with a scope of being built after the nation's independence between 1957 and 1970. Three buildings from this category were shot with the UAV, the National Mosque, Tun Abdul Razak Apartments or famously known as the Pekeliling Flats, and the Rifle Range Flats in Penang. This research will present the utilization of UAV in documenting a built heritage, its challenges in operating the machine, and documenting the sites. This study also briefly describes how aerial videography can be beneficial for visualization artists. In addition to aerial capturing, one aspect of built heritage documentation deals with e-reconstruction including digital drawings, 3D modeling, virtual reality, etc. This can be achieved by using existing visual materials as a reference to generate a virtualized version of the building. In some points visualization artist needs full access to the building, as existing reference images are insufficient. But as mentioned above, sometimes access is limited to terms and conditions mostly related to safety. In this situation one of the best alternatives is to use UAV drones. Aerial videography can be beneficial for visualization artists, first as the reference, and secondly to be combined with virtualized materials for augmented reality purposes as the land where flats were located on, will be covered by newly built skyscrapers in the near future.

关键词： Cameras Unmanned aerial vehicles Visualization Global Positioning System Three-dimensional displays Floors

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Using multimedia Ontologies for Automatic Image Annotation and Classification

Using Multimedia Ontologies for Automatic Image Annotation a...

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IEEE International conference on Services Economics (SE)

作者： Antonio M. Rinaldi IKNOS-LAB - Intelligent and Knowledge Systems Università di Napoli Federico II Napoli Italy DIETI - Dipartimento di Ingegneria Elettrica e delle Tecnologie dell'Informazione Napoli Italy

In the era of big data, the use of formal models and techniques to represent and manage information is a necessary task to implement efficient intelligent information systems. In this paper we propose a complete framework to annotate and categorize images. Our approach is based on multimedia ontologies organized following a formal model to represent knowledge. Our ontologies use multimedia data and linguistic properties to bridge the gap between the target semantic classes and the available low-level multimedia descriptors. The multimedia features are automatically extracted using algorithms based on MPEG-7 standard. The informative image content is annotated with semantic information extracted from our ontologies and the categories are dynamically built by means of a general knowledge base. Experimental results show the efficiency of our approach in the annotation and classification tasks using a combination of textual and visual components.

关键词： multimedia communication Ontologies Semantics Visualization Pragmatics Transform coding Standards

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Real-time discovery and decision making from big data

Real-time discovery and decision making from big data

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IEEE International conference on Consumer Electronics-Taiwan (ICCE-TW)

作者： Mihaela van der Schaar Chancellor's Professor of Electrical Engineering University of California Los Angeles

As the world becomes evermore connected and instrumented, decision-makers have ever more rapid access to ever changing and growing streams of data - but this makes the decision-maker's problems ever more complex as well, because it is impossible to learn everything in the time frame in which decisions must be made. What the decision-maker must do, therefore, is to discover in real time what is relevant in the enormous stream of data and use the relevant information to make good decisions. This talk presents a systematic framework and associated algorithms that enable a decision-maker to do this. The algorithms we propose yield strong performance guarantees for both the long run and the short run. The applications are numerous and include patient monitoring, online recommendation systems, social networks, targeted advertisement, surveillance, network security, finance etc.

关键词： Awards activities Educational institutions Streaming media Electrical engineering multimedia communication Real-time systems

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An effectual elucidation of task scheduling and memory partitioning for MPSoC

An effectual elucidation of task scheduling and memory parti...

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International conference on (ISCO) Intelligent systems and Control

作者： A Poorani B Anuradha C. Vivekanadhan SNS College of Engineering Coimbatore Department of Information Technology SNS College of Engineering Coimbatore Department of EEE SNS College of Engineering Coimbatore

In upcoming technologies multiprocessors are used for the efficient performance improvement. The multi processor system on chip is the complex embedded system used in multimedia applications for the resource utilization and simultaneous accessing. The MPSoC is the processor which uses the n number of resources such as peripherals, devices and processing elements for the improvisation of speed and performance which in turn reduces the execution time and energy dissipation. In general we use the offchip memory which has the cache in order to reduce the time of data fetch. In off chip memory access they use the decoupled approach where the partitioning and allocation of tasks to processor are done separately. Scratch Pad Memory is the fast on-chip memory which is the part of integrated chip memory (RAM). The SPM is the on-chip memory which can be used for the integration approach of task scheduling and memory partitioning. The integrated approach uses heuristics algorithm which increases the performance but when data needed is not available it leads to cache conflict. Thus the cache conflict is also been resolved by the use of segmented LRU algorithm. By the use of these two algorithms the execution cycle time is been reduced which can be evaluated using various benchmarks.

关键词： Processor scheduling Random access memory Benchmark testing Partitioning algorithms Resource management Embedded systems Computer architecture

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