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Advances in Multimedia
Volume 2014, Article ID 680859, 9 pages
http://dx.doi.org/10.1155/2014/680859
Research Article

Macroblock Layer Rate Control Based on Structural Similarity and Mean Absolute Difference for H.264

1Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science and Technology, Nanjing 210044, China
2School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China

Received 20 April 2013; Revised 24 December 2013; Accepted 2 January 2014; Published 11 February 2014

Academic Editor: Costas Kotropoulos

Copyright © 2014 Xiao Chen and Dongjue Gu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the process of the H.264 video coding, special attention should be paid to the subjective quality of the image. This paper applies the structural similarity (SSIM) based subjective evaluation to the rate control in the H.264 coding and proposes to combine the SSIM and the mean absolute difference (MAD) to perform the macroblock layer bit allocation instead of the MAD. Experimental results show that the proposed method is correlating better with the human visual system and thus achieves better subjective image quality.