The proceedings contains 94 papers from the IEEE Computer Society's International conference on multimedia Computing and systems. Topics discussed include: virtual reality;quality of service;video-on-demand system...
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The proceedings contains 94 papers from the IEEE Computer Society's International conference on multimedia Computing and systems. Topics discussed include: virtual reality;quality of service;video-on-demand systems;buffer management;content-based retrieval;query languages;hardware prefetching techniques;multimedia modeling;content-based video structuring;real time gesture recognition;three-dimensional presentation;multimedia synchronization;hypermedia documents;digital data processing;video coding;digital video traffic;disk scheduling;and algorithms.
The advent of the digital television in Brazil has allowed users to access interactive channels. Once interactive channels are available, the users are able to find multimediacontent such as movies and breaking news ...
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ISBN:
(纸本)9789897580390
The advent of the digital television in Brazil has allowed users to access interactive channels. Once interactive channels are available, the users are able to find multimediacontent such as movies and breaking news programs, to send and/or receive emails, to access interactive applications and also other contents. In this context, a high demand of requests from users is expected. Therefore, from the content provider's point of view, the determination of transmission parameters is needed in order to ensure the best quality of transmission to every user. The aforementioned identification problem is modelled as an optimization problem and a solution procedure based on metaheuristic techniques is proposed. Genetic Algorithm and Tabu Search metaheuristics are employed separately and coupled in a hybrid scheme to define the best transmission policy, optimizing the transmission parameters, such as audio and video transmission rates. Based on the experimental results, the hybrid algorithm has produced better solutions which meet the quality requirements.
作者：
Lin, XiaofanVobile Inc.
4699 Old Ironsides Drive Ste. 430 Santa Clara CA 95054 United States
content-based image retrieval (CBIR) has been studied for nearly two decades since IBM's research on QBIC (Query by Image content) [1]. In the past decade, another related but different area, video fingerprinting,...
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Due to the disadvantages of annotation based approaches for media object retrieval, there is a broad interest in content-based methods which allow for retrieval by similarity. Despite the plethora of existing work, ac...
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ISBN:
(纸本)1932415645
Due to the disadvantages of annotation based approaches for media object retrieval, there is a broad interest in content-based methods which allow for retrieval by similarity. Despite the plethora of existing work, actual progress in this area can hardly be documented, since performance evaluation for content-based retrieval is still in its infancy. The main reason for this situation is that considerable efforts are needed to design, conduct and analyze cognition experiments for the acquisition of ground truth data. As there is also a lack of publicly available experiment sets and results, performance evaluation of similarity measures is virtually absent. In order to rectify this situation, this article introduces a prototypical framework for the comparison of similarity algorithms for multimedia databases.
multimedia information systems are getting commonplace as kiosk systems in public areas or as online information systems in the Internet. This paper describes the development of a municipal information system that can...
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ISBN:
(纸本)0818682167
multimedia information systems are getting commonplace as kiosk systems in public areas or as online information systems in the Internet. This paper describes the development of a municipal information system that can be used in both domains. In the public area an ATM based client/server structure is used which provides gateways for Internet access. The system offers retrieval of authority information using intuitive and associative access modes. We discuss architectural models and tools which can be used as a system environment. For content representation HTML is extended in order to reflect the designers' impression of such a system.
This paper discusses media streaming using dynamic resource adaptation and update as a means of facilitating Universal multimediaaccess (UMA) [1]: the concept of accessing multimediacontent through a variety of poss...
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ISBN:
(纸本)0780381459
This paper discusses media streaming using dynamic resource adaptation and update as a means of facilitating Universal multimediaaccess (UMA) [1]: the concept of accessing multimediacontent through a variety of possible schemes. As back-ground to our work, the paper summarizes the most common content negotiation approaches and addresses their,facets and problems. MPEG-21 the multimedia framework and its relationship to UMA is then explained. The primary focus of the work is an end-to-end approach to content adaptation which takes advantage of MPEG-21 to facilitate the UMA concept in a media streaming environment. The concept is validated using a media streaming test-bed which provides,for wide adaptation according to broad usage descriptions.
content adaptation has been introduced to tailor the same media content to different derived user contexts to allow end users with different access networks, client devices and/or user profiles to access the same info...
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ISBN:
(纸本)0819456543
content adaptation has been introduced to tailor the same media content to different derived user contexts to allow end users with different access networks, client devices and/or user profiles to access the same information source. However, content adaptation also introduces security implications in a content distribution food chain. In this paper, we conduct an in-depth investigation into the potential security issues involved in content adaptation, especially video content adaptation, in multimedia communication systems. We analyze the security requirements in the context of content adaptation. In particular, we address the issue of where to place the security functions and its implications on the security and content adaptation functionality. The general security architectures for the protection of adapted content are categorized and analyzed. Various rationales and implications of some of the most recent multimedia security technologies are investigated under these architectures. The paper provides the readers with an in-depth analysis, a comprehensive overview, and a better understanding of the security issues in a multimedia communication system where adaptation is a necessity.
The Web is catalyzing a transition from PC-based software and file systems to Internet-based applications and Web services. We aim at the combination of multimedia computing and Web technologies (Web Services) togethe...
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ISBN:
(纸本)9780769538761
The Web is catalyzing a transition from PC-based software and file systems to Internet-based applications and Web services. We aim at the combination of multimedia computing and Web technologies (Web Services) together that supports uniform naming, protection, and access for multimediacontent objects stored by Web services to accomplish distributed computing. At a high level, it creates an integrated file and object system from heterogeneous, multimediacontent objects dispersed across the Internet. Based on this fact, we proposed a novel framework of distributed multimedia computing in this paper. In this framework, the concept of workflow which can describe business processes logically is introduced. Some experiments show the effectiveness of the proposed framework.
Enabling transparent and augmented use of multimediacontent across a wide range of networks and devices is still a challenging task within the multimedia research community. Within multimedia frameworks, content adap...
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ISBN:
(纸本)9781424410163
Enabling transparent and augmented use of multimediacontent across a wide range of networks and devices is still a challenging task within the multimedia research community. Within multimedia frameworks, content adaptation is the core concept to overcome this issue. Most media adaptation engines targeting Universal multimediaaccess (UMA) scale the content w.r.t. terminal capabilities and network resource constraints and do not sufficiently consider user preferences. This paper focuses on a hybrid recommender technique for configuring a cross-modal utility model that guides adaptation of multimediacontent. This approach additionally considers the user environment as well as demographic user data which leads to a personalized and increased multimedia experience. Based on a related adaptation decision technique we show how it is possible to offer a personalized adaptation for the individual user. We present a detailed evaluation of the approach based on results earned by subjective tests.
This paper presents the optimization of the reorganisation algorithms of hybrid index structures supporting multimedia search conditions. multimedia in this case refers to, on the one hand, the support of high dimensi...
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ISBN:
(纸本)9789897580352
This paper presents the optimization of the reorganisation algorithms of hybrid index structures supporting multimedia search conditions. multimedia in this case refers to, on the one hand, the support of high dimensional feature spaces and, on the other, the mix of data of multiple types. We will use an approach which may typically be found in geographic information retrieval (GIR) systems combined of two-dimensional geographical points in combination with textual data. Yet, the dimensions of the points may be arbitrarily set. Currently, most of these access methods implemented for the use in database centric application domains are validated regarding their retrieval efficiency in simulation based environments. Most of the structures and experiments only use synthetic validation in an artificial setup. Additionally, the focus of these tests is to validate the retrieval efficiency. We implemented such an indexing method in a realistic database management system and noticed an unacceptable runtime behaviour of reorganisation algorithms. Hence, a structured and iterative optimization procedure is set up to make hybrid index structures suitable for the use in real world application scenarios. The final outcome is a set of algorithms providing efficient approaches for reorganisations of access methods for hybrid data spaces.
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