ICCMS '09 Proceedings of the 2009 International Conference on Computer Modeling and Simulation
A novel macroblock-layer rate-distortion model for rate control scheme of H.264/AVC
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
Overview of the H.264/AVC video coding standard
IEEE Transactions on Circuits and Systems for Video Technology
Rate-constrained coder control and comparison of video coding standards
IEEE Transactions on Circuits and Systems for Video Technology
Optimum bit allocation and rate control for H.264/AVC
IEEE Transactions on Circuits and Systems for Video Technology
A Novel Rate Control Scheme for Low Delay Video Communication of H.264/AVC Standard
IEEE Transactions on Circuits and Systems for Video Technology
A novel rate control algorithm for H.264/AVC based on human visual system
PSIVT'11 Proceedings of the 5th Pacific Rim conference on Advances in Image and Video Technology - Volume Part II
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Rate control plays a critical role in the video encoder. In this paper, an effective macroblock (MB) layer rate control algorithm is proposed for H.264/AVC to improve video quality and reduce the computational complexity. By thoroughly analyzing the temporal-spatial correlation and object direction, the mean absolute difference (MAD) value of current MB is a weighted combination of temporal MAD predicted by previous frame and spatial MAD predicted by current frame, and then four directional patterns are chosen adaptively for data point selection in quadratic rate-quantization (R-Q) model parameters estimation. Finally, a more accurate header bits prediction model is developed to improve the accuracy of allocated bits which can be used for quantization parameter (QP) calculation. Extensive experiment results show that compared with JVT-G012, the proposed algorithm achieves higher average peak signal to noise ratio (PSNR) up to 0.51dB improvements and more accurate target bit rates.