| Vol. 3, No. 2, December 2006 - Art. 1 |
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| Rate-distortion-complexity Modeling for Network and Receiver
Aware Adaptation |
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by
M. van der Schaar, Y. Andreopoulos (University of California,
Los Angeles)
Copyright
Copyright © IEEE, 2005.Reprinted, with permission, from:
"Rate-Distortion-Complexity Modeling for Network and
Receiver Aware Adaptation," by Mihaela van der Schaar,
Yiannis Andreopoulos, IEEE Transactions on Multimedia, vol.
7, no. 3, June 2005, 471-479 |
| | | Abstract
Existing research on Universal Multimedia Access has mainly focused
on adapting multimedia to the network characteristics while overlooking
the receiver capabilities. Alternatively, part 7 of the MPEG-21
standard entitled Digital Item Adaptation (DIA) defines description
tools to guide the multimedia adaptation process based on both the
network conditions and the available receiver resources. In this
paper, we propose a new and generic rate-distortion-complexity model
that can generate such DIA descriptions for image and video decoding
algorithms running on various hardware architectures. The novelty
of our approach is in virtualizing complexity, i.e., we explicitly
model the complexity involved in decoding a bitstream by a generic
receiver. This generic complexity is translated dynamically into
“real” complexity, which is architecture-specific. The
receivers can then negotiate with the media server/proxy the transmission
of a bitstream having a desired complexity level based on their
resource constraints. Hence, unlike in previous streaming systems,
multimedia transmission can be optimized in an integrated rate-distortion-complexity
setting by minimizing the incurred distortion under joint rate-complexity
constraints. |
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