Recent advances in rate control for video coding
Image Communication
A rate control scheme for H.264/AVC CBR transmission
SPPR'07 Proceedings of the Fourth conference on IASTED International Conference: Signal Processing, Pattern Recognition, and Applications
IEEE Transactions on Circuits and Systems for Video Technology
Consistent picture quality control strategy for dependent video coding
IEEE Transactions on Image Processing
A rate control scheme for H.264/AVC CBR transmission
SPPRA '07 Proceedings of the Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications
An effective real-time rate control scheme for video codec
APPT'07 Proceedings of the 7th international conference on Advanced parallel processing technologies
SNR-based bit allocation in video quality smoothing
PCM'06 Proceedings of the 7th Pacific Rim conference on Advances in Multimedia Information Processing
Rate control for consistent visual quality of H.264/AVC encoding
Image Communication
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Most model-based rate control solutions have the generally questionable assumption that video sequence is stationary. In addition, they often suffer from the fundamental problem of model parameter misestimation. In this paper, we propose a sequence-based frame-level bit allocation framework employing a rate-complexity model that has the capability of tracking the nonstationary characteristics in the video source without look-ahead encoding. In addition, a new nonlinear model parameter estimation approach is proposed to overcome the existing problems in previous model parameter estimation schemes where quantization parameter (QP) is determined to achieve the allocated bits for a frame. Furthermore, a general concept of bit allocation guarantee is discussed and its importance is highlighted. The proposed rate control solution can achieve smoother video quality with less quality flicker and motion jerkiness. Both a complete solution where requantization is employed to guarantee the achievement of the allocated bits, and a simplified solution without requantization are studied. Experimental results show that they both provide significantly better performance, in terms of average peak-signal-to-noise ratio and quality smoothness, than the MPEG-4 Annex L frame-level rate control solution.