Metadata-driven multimedia access

Beek, Peter van der; Smith, J. R.; Ebrahimi, Touradj; Suzuki, Teruhiko; Askelof, J.

doi:10.1109/msp.2003.1184338

Cited by 63 publications

(34 citation statements)

References 32 publications

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“…2, where an optimal operator and its corresponding quality are obtained for a given rate constraint, to a set of rates sampled over a whole dynamic range of rate reduction. We can also generate a utility function in a slightly different way, where distortion-rate pairs given by (19) are computed and collected for the predefined .…”

Section: Utility Function Generationmentioning

confidence: 99%

An Optimal Framework of Video Adaptation and Its Application to Rate Adaptation Transcoding

Kim¹,

Wang²,

Chang³

et al. 2005

ETRI J

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The adaptation of video according to the heterogeneous and dynamic resource constraints on networks and devices, as well as on user preferences, is a promising approach for universal access and consumption of video content. For optimal adaptation that satisfies the constraints while maximizing the utility that results from the adapted video, it is necessary to devise a systematic way of selecting an appropriate adaptation operation among multiple feasible choices. This paper presents a general conceptual framework that allows the formulation of various adaptations as constrained optimization problems by modeling the relations among feasible adaptation operations, constraints, and utilities. In particular, we present the feasibility of the framework by applying it to a use case of rate adaptation of MPEG-4 video with an explicit modeling of adaptation employing a combination of frame dropping and discrete cosine transform coefficient dropping, constraint, utility, and their mapping relations. Furthermore, we provide a description tool that describes the adaptationconstraint-utility relations as a functional form referred to as a utility function, which has been accepted as a part of the terminal and network quality of service tool in MPEG-21 Digital Item Adaptation (DIA).

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Section: Utility Function Generationmentioning

confidence: 99%

An Optimal Framework of Video Adaptation and Its Application to Rate Adaptation Transcoding

Kim¹,

Wang²,

Chang³

et al. 2005

ETRI J

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“…Also more than one description may exist for the same content depending on the needs the descriptions intend to address. The types of description tools specified by the MPEG-7 standard are [17] MPEG has invested a great effort in the standardization of MPEG-7 description tools for UMA applications [33]. This makes MPEG-7 the most powerful content description solution available for UMA environments and thus has been chosen for describing content in the context of the UMA system later described in this paper.…”

Section: Multimedia Content Descriptionmentioning

confidence: 99%

Using MPEG standards for multimedia customization

Magalhães

Pereira

2004

Signal Processing: Image Communication

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The multimedia content delivery chain poses today many challenges. The increasing terminal diversity, network heterogeneity and the pressure to satisfy the user preferences are raising the need for content to be customized in order to provide the user the best possible experience. This paper addresses the problem of multimedia customization by (1) presenting the MPEG-7 multimedia content description standard and the MPEG-21 multimedia framework; (2) classifying multimedia customization processing algorithms; (3) discussing multimedia customization systems; and (4) presenting some customization experiments. r

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“…With the explosion of multimedia content, it soon became evident that there was a need for efficient content description (with so-called metadata) to achieve more efficient content management, retrieval, and filtering [15]. Content description is also essential for effective usage environment adaptation if systems are to avoid computationally expensive content analysis at adaptation time.…”

Section: Existing and Emerging Technologiesmentioning

confidence: 99%

Universal multimedia experiences for tomorrow

Pereira¹,

Burnett

2003

IEEE Signal Process. Mag.

114

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The previous decade has seen a variety of trends and developments in the area of communications and thus multimedia access. While individual, isolated developments produced small advances on the status quo, their combination and cross-fertilization resulted in today's complex but exciting landscape. In particular, we are beginning to see delivery of all types of data for all types of users in all types of conditions. This article discusses the current status of universal multimedia access (UMA) technologies and investigates future directions in this area. Key developments and trends from the last few years have set the scene for ubiquitous multimedia consumption. In summary, these are: wireless communications and mobility; standardized multimedia content; interactive versus passive consumption; and the Internet and the World Wide Web (WWW). Disciplines Physical Sciences and MathematicsPublication Details

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Metadata-driven multimedia access

Cited by 63 publications

References 32 publications

An Optimal Framework of Video Adaptation and Its Application to Rate Adaptation Transcoding

An Optimal Framework of Video Adaptation and Its Application to Rate Adaptation Transcoding

Using MPEG standards for multimedia customization

Universal multimedia experiences for tomorrow

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