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Content-adaptive utility-based video adaptation

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3 Author(s)
Jae-Gon Kim ; Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Wang, Y. ; Shih-Fu Chang

Many techniques exist for adapting videos to satisfy heterogeneous resource conditions or user preferences. However, selections of appropriate adaptations among various choices are often ad hoc. To provide a systematic solution, we present a general conceptual framework to model video entity, adaptation, resource, utility, and relations among them. The framework extends the conventional rate-distortion model in terms of flexibility and generality. It allows for formulations of various adaptation problems as resource-constrained utility maximization. It also facilitates new approaches to predicting critical information about resource-utility relations. We apply the framework to a practical case in dynamic bit rate adaptation. Furthermore, we present a description tool, which has been accepted as a part of the MPEG-21 digital item adaptation (DIA), to support utility-based adaptation.

Published in:

Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on  (Volume:3 )

Date of Conference:

6-9 July 2003

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