Bit allocation for joint spatial-quality scalability in H.264/SVC
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
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IEEE Transactions on Image Processing
Optimum bit allocation and accurate rate control for video coding via ρ-domain source modeling
IEEE Transactions on Circuits and Systems for Video Technology
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IEEE Transactions on Circuits and Systems for Video Technology
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IEEE Transactions on Circuits and Systems for Video Technology
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This paper proposes an optimum spatial bit allocation scheme via SAQD-domain based rate and distortion models for H.264/SVC. Inter-layer dependency is avoided by introducing an independent domain. Inspired by ρ -domain source modeling, we first derived rate and distortion models in SAQD-domain with an analytic justification. Then we formulated the optimum allocation problem with the rate and distortion models in SAQD-domain, and computed the optimum allocation for each spatial layer using the Lagrangian function. Finally, by developing a simplified rate control model, a proper quantization step is determined to meet the target rate. The derived rate and distortion models show high goodness-of-fit. The proposed scheme can also be applied to temporal, SNR scalable coding and H.264 based stereo video coding with limited modifications. Experimental results demonstrate that the proposed scheme outperforms that in JSVM 9.16 with an average PSNR gain up to 1.39 dB and much smaller rate deviations.