A fast and accurate characteristic-based rate-quantization model for video transmission
2007
In this paper, we analyze the limitation of ρ-domain based rate-quantization (R-Q) model. We find out that a
characteristic-based R-Q model can be derived from ρ-domain to q-domain. Experimental data show that such a
characteristic-based R-Q model can provide a more accurate estimation of the actual bitrate than existing models for both
frame-level and macroblock(MB)-level. In addition, a simple analysis of computational complexity of our quantization-free
characteristics extraction framework shows that our model is faster than existing variance and ρ-domain based R-Q
models.
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