Adaptive Scheduling of Multimedia Documents

Wirag, Stefan

doi:10.1007/978-3-642-60111-8_38

Cited by 11 publications

(6 citation statements)

References 10 publications

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“…At run time alternatives are excluded based on presentation constraints. ZyX (Boll and Klas 2001), Tiempo (Wirag 1999) and REVEAL THIS (Pastra 2006) are other examples of multimedia document models which provide some element of flexibility and adaptation. Thang et al (2003Thang et al ( , 2005a propose a content value model, called the Overlapped Content Value (OCV) model which is a systematic approach to determining the conversion boundaries between modalities based on resources available to the system, as apposed to actually controlling cross-modality adaptations.…”

Section: Transmoding In Mobile Intelligent Multimedia Presentation Symentioning

confidence: 99%

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Bandwidth determined transmoding through fuzzy logic in mobile intelligent multimedia presentation systems

2006

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Mobile intelligent multimedia presentation systems are subject to various resource constraints including mobile network characteristics, mobile device capabilities and user preferences. Those presentation systems which incorporate remote multimedia content accessed across HTTP (Hyper Text Transfer Protocol) or RTP (Real Time Transfer Protocol) protocols are particularly reliant on the capabilities of the connecting mobile network (i.e. minimum, average and maximum bandwidth) and in particular on the real-time constraints (i.e. currently available bandwidth, packet loss, bit error rate, latency) which prevail during actual content transmission. One approach to address this is to scale content, thus reducing its datarate requirement, although this technique is inherently limited by the lowest acceptable quality of that media element. Alternatively, content can be converted from one modality to another with a lower resource requirement. TeleMorph, a cross-modality adaptation control platform is detailed here. Initially a brief introduction to Intelligent Multimedia and to Mobile Intelligent Multimedia is given, and key systems discussed. The main premise of TeleMorph is that cross-modality adaptations in mobile presentation systems must be controlled in a manner which gives primary consideration to bandwidth fluctuations as well as the constraints listed above. The current prototype of TeleMorph, which uses a fuzzy inference system to control cross-modality adaptations between video and audio, is described. Particular focus is given to the fuzzy inputs, fuzzy control rules and fuzzy outputs which have been utilised in decision making. TeleTuras, a tourist information application which has been implemented as a testbed for TeleMorph, gives promising evaluation results based on multimedia and bandwidth specific test scenarios. TeleMorph is related to other approaches in the area 123 326 A. J. Solon et al. other approaches in that it focuses specifically on the challenges posed by controlling bandwidth determined cross-modality adaptations in a mobile network environment. Future work on TeleMorph's output presentation composition will incorporate images and text also, thus allowing for extended adaptation between video, audio, images and text, as well as multimodal combinations of these media elements.

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Section: Transmoding In Mobile Intelligent Multimedia Presentation Symentioning

confidence: 99%

“…continuously fluctuating bandwidth. ZyX (Boll and Klas 2001), Tiempo (Wirag 1999) and REVEAL THIS (Pastra 2006) were also detailed in Sect. 2.2 as document models providing some element of flexibility and adaptation, although the control and execution of these adaptations were not dealt with in any of these projects.…”

Section: Relation To Other Workmentioning

confidence: 99%

Bandwidth determined transmoding through fuzzy logic in mobile intelligent multimedia presentation systems

2006

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“…can be applied for the scheduling of deterministic multimedia documents [4,8,16]. Further on, some others complex issues are addressed, such as the adaptive scheduling which is discussed in [28]. This approach introduces the utilization of an event-graph so that alternative configurations of a document can be presented according to the resources of the system and the desired QoS.…”

Section: Related Workmentioning

confidence: 99%

An integrated environment for the presentation of consistent SMIL 2.0 documents

Sampaio

Lohr

Courtiat

2001

Proceedings of the 2001 ACM Symposium on Document Engineering

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The utilization of Interactive Multimedia Documents (IMDs) has been largely addressed in several fields such as education, medicine, etc. since these documents can be distributed and accessed over the World-Wide-Web. In this context, the W3C standard Synchronized Multimedia Integration Language (SMIL) has been proposed for the presentation of IMD's over the Web. However, the flexibility of the temporal model of SMIL 2.0 allows the author to describe temporal synchronization relationships that potentially can not be resolved during the presentation of the document, known as temporal inconsistencies. For this reason, an approach that enables to detect and correct these inconsistencies is needed. This paper presents a formal approach for the verification, scheduling and presentation of consistent SMIL 2.0 documents based on the RT-LOTOS formal description technique. Thus, the consistency analysis of SMIL 2.0 documents is presented and some solutions are proposed in order to deal with potential state space explosion problems. Further on, some contributions are also presented concerning the scheduling and presentation of SMIL 2.0 documents based on a simple scheduling graph, called a Time Labeled Automata (TLA), derived automatically from the document formal specification. Finally, a global Java-based architecture for the implementation of a player of consistent SMIL 2.0 documents is presented.

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“…At run time alternatives are excluded based on presentation constraints. ZyX [3], Tiempo [27], and REVEAL THIS [19] are other examples of multimedia document models which provide some element of flexibility and adaptation. References [23]- [25] propose a content value model, called the Overlapped Content Value (OCV) model which is a systematic approach to determining the conversion boundaries between modalities based on resources available to the system, as apposed to actually controlling cross-modality adaptations.…”

Section: Transmoding In Mobile Intelligent Multimedia Presentatiomentioning

confidence: 99%

TeleMorph: A Fuzzy Logic Approach to Network-Aware Transmoding in Mobile Intelligent Multimedia Presentation Systems

Solon

McKevitt

Curran

2007

IEEE J. Sel. Top. Signal Process.

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Abstract-Mobile intelligent multimedia presentation systems are limited by various constraints including mobile network characteristics, mobile device capabilities, and user preferences. Those presentation systems which incorporate remotely stored multimedia rely on the bandwidth which is available during actual content transmission on the connecting mobile network. One approach to deal with this is to transcode content, thus reducing its data rate requirement, although this technique is inherently limited by the lowest acceptable quality of that media element. Alternatively, content can be transmoded to different modalities with lower bandwidth requirements. TeleMorph, a cross-modality adaptation control platform is detailed in this paper. The main premise of TeleMorph is that cross-modality adaptation decisions in mobile presentation systems must occur with primary consideration for bandwidth fluctuations. TeleMorph has been implemented as a network-aware fuzzy inference system that controls cross-modality adaptations between multimodal audio-video, audio-images, and images-text presentations, as well as unimodal audio and text presentations. Initially, a brief introduction to Intelligent Multimedia and Mobile Intelligent Multimedia is given, and related systems discussed. TeleTuras, a tourist information application implemented as a testbed for TeleMorph, is utilized for objective and subjective evaluations through its integration of six disparate test scenarios that incorporate various media types and qualities. Positive results for each evaluation technique, based on specific metrics, are also presented. In addition, future work on TeleMorph is also detailed.

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Adaptive Scheduling of Multimedia Documents

Abstract: Abstract

Cited by 11 publications

References 10 publications

Bandwidth determined transmoding through fuzzy logic in mobile intelligent multimedia presentation systems

Bandwidth determined transmoding through fuzzy logic in mobile intelligent multimedia presentation systems

An integrated environment for the presentation of consistent SMIL 2.0 documents

TeleMorph: A Fuzzy Logic Approach to Network-Aware Transmoding in Mobile Intelligent Multimedia Presentation Systems

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