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检索条件"任意字段=14th Conference on Multimedia Computing and Networking 2007"

共 70 条记录，以下是1-10 订阅

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SenseTK: A multimodal, multimedia sensor networking toolkit

SenseTK: A multimodal, multimedia sensor networking toolkit

引用

14th conference on multimedia computing and networking 2007

作者： Sitbon, Phillip Feng, Wu-chi Bulusu, Nirupama Dang, thanh Portland State Univ Portland OR 97207 USA

ISBN: (纸本)9780819466174

this paper describes the design and implementation of a multi-modal, multimedia capable sensor networking framework called SenseTK. SenseTK allows application writers to easily construct multi-modal, multimedia sensor networks that include both traditional scalar-based sensors as well as sensors capable of recording sound and video. the distinguishing features of such systems include the need to push application processing deep within the sensor network, the need to bridge extremely low power and low computation devices, and the need to distribute and manage such systems. this paper describes the design and implementation of SenseTK and provides several diverse examples to show the flexibility and unique aspects of SenseTK. Finally, we experimentally measure several aspects of SenseTK.

关键词： video sensing video applications video adaptation

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Open issues in wireless visual sensor networking

Open issues in wireless visual sensor networking

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Joint Meeting of the 14th International Workshop on Systems, Signals and Image Processing/EURASIP conference Focused on Speech and Image Processing, multimedia Communications and Services

作者： Zahariadis, th. Voliotis, S. Technol Educ Inst Chalkida Dept Elect Engn Psachna 34400 Evia Greece

ISBN: (纸本)9789612480363

the Wireless Visual Sensor Networks (WVSN) target a large variety of distributed, wireless, streaming multimedia networking applications' areas, ranging from home surveillance to military and deep space applications. However, there are a number of open issues that have to be carefully realized before visual sensor webs become widely available. In this paper, we highlight some of the main open issues and challenges, focusing on the networking characteristics. Moreover, we propose a wireless sensor node protocol stack that takes into account the foreseen networking and A/V requirements of the WVSN applications.

关键词： wireless visual sensor networks routing QoS

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Olfactory enhanced multimedia applications: Perspectives from an empirical study

Olfactory enhanced multimedia applications: Perspectives fro...

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14th conference on multimedia computing and networking 2007

作者： Ademoye, Oluwakemi A. Ghinea, Gheorghita Brunel Univ Dept Informat Syst & Comp Uxbridge UB8 3PH Middx England

ISBN: (纸本)9780819466174

the increasing demand for multi-modal systems and applications that are highly interactive and multi-sensory in nature has led to the introduction of new media and new user interface devices in multimedia computing. Computer generated smell, also known as olfactory data, is one of such media objects currently generating a lot of interest in the multimedia industry. We are currently focusing our attention on exploring user perception of computer generated smell when combined with other media to enrich their multimedia experience. In this paper, we present the results of an empirical study into users' perception of olfactory enhanced multimedia displays. Results showed that users generally enjoy an enhanced multimedia experience when augmented by olfactory stimuli, and that the presence of such stimuli increases the sense of relevance. Whilst there is a general positive bias towards olfactory enhanced multimedia applications, specific properties of smell such as diffusion and lingering mean that in practice specific attention needs to be given when a mix of smells is associated with visualised multimedia content;moreover, it was found that whilst smell was incorrectly identified in some instances, the presence of smell per se is generally enough to create a richer user multimedia experience.

关键词： olfaction multimedia smell perception

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A Robust Feature-based Image Watermarking Scheme

A Robust Feature-based Image Watermarking Scheme

引用

14th ACIS International conference on Software Engineering, Artificial Intelligence, networking and Parallel/Distributed computing (SNPD)

作者： Lai, Chih-Chin Chan, Chi-Feng Ouyang, Chen-Sen Chiang, Hui-Fen Natl Univ Kaohsiung Dept Elect Engn Kaohsiung 81148 Taiwan I Shou Univ Dept Informat Engn Kaohsiung 84001 Taiwan Taipei Chengshih Univ Sci & Technol Dept Digital Multimedia Design Taipei 11202 Taiwan

ISBN: (纸本)9780769550053

the main objective of developing an image watermarking technique is to satisfy both imperceptibility and robustness requirements. To achieve this objective, a hybrid image watermarking scheme based on discrete wavelet transform and singular value decomposition is proposed in this paper. In our approach, the edge information of an image is used to embed the watermark. In addition, we apply the particle swarm optimization algorithm to search the proper value of scaling factor which is used to determine the watermark strength. Experimental results are provided to illustrate the proposed approach is able to withstand a variety of image processing attacks.

关键词： image watermarking image feature

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Towards Zero Factory Downtime: Edge computing and SDN as Enabling Technologies 14

Towards Zero Factory Downtime: Edge Computing and SDN as Ena...

引用

14th International conference on Wireless and Mobile computing, networking and Communications (WiMob)

作者： Govindaraj, Keerthana Grewe, Dennis Artemenko, Alexander Kirstaedter, Andreas Robert Bosch GmbH Corp Sector Res & Adv Engn Renningen Germany Univ Stuttgart Inst Commun Networks & Comp Engn Stuttgart Germany

ISBN: (纸本)9781538668764

Future factory automation systems are expected to process vast amounts of data and orchestrate complex cyber-physical components. Edge computing (EC) is a promising approach to address the requirements set by upcoming industrial systems. While EC caters to the computation requirements, it requires a solution to perform flexible network management of these computation resources. Software-Defined networking (SDN) is a promising candidate to tackle such challenges. While most of the related work on EC and SDN focuses on multimedia or automotive applications, this paper presents the relevance of both paradigms for industrial applications. By introducing two most prominent industrial use cases, namely proactive system surveillance and intelligent technical assistance, this paper discusses the challenges involved and proposes a solution space for realizing these applications using the combination of EC and SDN. Furthermore, it presents future research directions regarding the combination of both paradigms in the context of factory automation.

关键词： factory automation edge computing latency flexibility

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Plasma: A scripting language for processing media streams

Plasma: A scripting language for processing media streams

引用

14th conference on multimedia computing and networking 2007

作者： Zhu, Tao Korshunov, Pavel Liu, Bing Ooi, Wei Tsang Natl Univ Singapore Dept Comp Sci Singapore 117548 Singapore

ISBN: (纸本)9780819466174

Media streaming has found applications in many domains such as education, entertainment, communication and video surveillance. Many of these applications require non-trivial manipulations of media streams, beyond the usual capture/playback operations supported by typical multimedia software and tools. To support rapid development of such applications, we have designed and implemented a scripting language called Plasma. Plasma treats media streams as first-class objects, and caters to the characteristic differences between stored media files and live media streams. In this paper, we illustrate the design and features of Plasma through several small examples, and describe two example applications that we developed on top of Plasma. these two applications demonstrate that using Plasma, complex applications that compose, mix, and filter multimedia streams can be written with relatively little effort.

关键词： Video Plasma Video surveillance Cameras Video processing multimedia Computer programming Motion detection Control systems Optical filters

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Perceptual multimedia compression based on predictive kalman filter eye movement modeling

Perceptual multimedia compression based on predictive kalman...

引用

14th conference on multimedia computing and networking 2007

作者： Komogortsev, Oleg V. Khan, Javed I. Kent State Univ Dept Comp Sci Kent OH 44242 USA

ISBN: (纸本)9780819466174

In this paper we propose an algorithm for predicting a person's perceptual attention focus (PAtF) through the use of a Kalman Filter design of the human visual system. the concept of the PAtF allows significant reduction of the bandwidth of a video stream and computational burden reduction in the case of 3D media creation and transmission. this is possible due to the fact that the human visual system has limited perception capabilities and only 2 degrees out of the total of 180 provide the highest quality of perception. the peripheral image quality can be decreased without a viewer noticing image quality reduction. multimedia transmission through a network introduces a delay. this delay reduces the benefits of using a PAtF due to the fact that the person's attention area can change drastically during the delay period, thus increasing the probability of peripheral image quality reduction being detected. We have created a framework which uses a Kalman Filter to predict future PAtFs in order to compensate for the delay/lag and to reduce the bandwidth/creation burden of any visual multimedia.

关键词： perceptual compression Kalman filter real-time communication

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Video to go: the effects of mobility on streaming media in a CDMA2000 1xEV-DO network

Video to go: The effects of mobility on streaming media in a...

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14th conference on multimedia computing and networking 2007

作者： Sessini, Phillipa Leventer, Matel Mahanti, Anirban Univ Calgary Dept Comp Sci 2500 Univ Dr NW Calgary AB T2N 1N4 Canada

ISBN: (纸本)9780819466174

this paper experimentally examines the performance of streaming media applications over a CDMA2000 1xEV-DO network. the performance of streaming in a cellular network is tested across three different levels of mobility., two applications, and the two transport layer protocols, TCP and UDP. Findings of this study are that streaming applications are impacted more by sources of interference such as high-rise buildings than by increased velocity. Also, when the mobile client is stationary, high data rates and high video quality are consistently achieved. We also find that for the streaming applications considered, UDP streams outperform TCP streams, consistently achieving higher bandwidth.

关键词： wireless multimedia video streaming wireless WANs code division multiple access (CDMA) third generation (3G)

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Flash on disk for low-power multimedia computing

Flash on disk for low-power multimedia computing

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14th conference on multimedia computing and networking 2007

作者： Singleton, Leo Nathuji, Ripal Schwan, Karsten Georgia Inst Technol Coll Comp Atlanta GA 30332 USA

ISBN: (纸本)9780819466174

Mobile multimedia computers require large amounts of data storage, yet must consume low power in order to prolong battery life. Solid-state storage offers low power consumption, but its capacity is an order of magnitude smaller than the hard disks needed for high-resolution photos and digital video. In order to create a device with the space of a hard drive, yet the low power consumption of solid-state storage, hardware manufacturers have proposed using flash memory as a write buffer on mobile systems. this paper evaluates the power savings of such an approach and also considers other possible flash allocation algorithms, using both hardware- and software-level flash management. Its contributions also include a set of typical multimedia-rich workloads for mobile systems and power models based upon current disk and flash technology. Based on these workloads, we demonstrate an average power savings of 267 mW (53% of disk power) using hardware-only approaches. Next, we propose another algorithm. termed Energy-efficient Virtual Storage using Application-Level Framing (EVS-ALF), which uses both hardware and software for power management. By collecting information from the applications and using this metadata to perform intelligent flash allocation and prefetching, EVS-ALF achieves an average power savings of 307 mW (61%), another 8% improvement over hardware-only techniques.

关键词： multimedia Operating systems Video Algorithm development computing systems Systems modeling Solid state electronics Digital photography Data storage Manufacturing

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MO-PR: Message-Oriented Partial-Reliability MPTCP for Real-time multimedia Transmission in Wireless Networks 14

MO-PR: Message-Oriented Partial-Reliability MPTCP for Real-t...

引用

14th IEEE International Wireless Communications and Mobile computing conference (IWCMC)

作者： Qin, Jiuren Xu, Changqiao Huang, Hui Zhong, Lujie Muntean, Gabriel-Miro Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Capital Normal Univ Informat Engn Coll Beijing 100048 Peoples R China Dublin City Univ Sch Elect Engn Performance Engn Lab Dublin Ireland

ISBN: (纸本)9781538620700

As an extension of Transmission Control Protocol (TCP), Multi-Path Transport Control Protocol (MPTCP) provides a reliable and streaming-oriented transmission service to the upper applications. However, when turning to the real-time multimedia transmission, the repeatedly retransmission of expired segments is unnecessary and inefficient. thus, we propose a Message-Oriented Partial-Reliability (MO-PR) improvement for MPTCP in this paper. the MO-PR firstly extend the Partially-Reliability transmission scheme to MPTCP which allows the sender to abandon the invalid segment by notifying the receiver. then, the Message-Oriented retransmission mechanism is designed to improve the discarding efficiency. Finally, the comparison-based simulation results show that MO-PR can effectively improve the transmission performance of multimedia in dynamic wireless networks.

关键词： MPTCP partial-reliability message-oriented multimedia transmission wireless network

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