Myoung-jin KIM, Min-cheol HONG
(School of Electronic Engineering, Soongsil University, Seoul 156-743, Korea)
Abstract-The purpose of this paper is to improve allocation of the number of bits by estimating the target bits in H.264/AVC rate control. In the scheme, an enhancement method of the target unit-layer bit allocation is proposed, which uses a frame and unit complexity estimation to improve the existing mean absolute difference (MAD) complexity measurement. Using the statistical characteristics, we obtain change of occurrence bit about QP to apply the bit amount by QP from the video characteristics in the estimated bit amount of the current frame. Simulation results show that not only the proposed rate control scheme could achieve time saving of more than 99% over existing rate control algorithm, but also PSNR and bit rate were almost the same as the performance in all the sequences.
Key words-bit rate control; MAD; unit-layer;statistical information
Manuscript Number: 1674-8042(2011)03-0256-04
doi: 10.3969/j.issn.1674-8042.2011.03.013
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