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CLC number: TN919.8

On-line Access: 2007-12-20

Received: 2007-07-01

Revision Accepted: 2007-09-26

Crosschecked: 0000-00-00

Cited: 3

Clicked: 3063

Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.2 P.225~231

http://doi.org/10.1631/jzus.A071355


Perceptual importance analysis for H.264/AVC bit allocation


Author(s):  Gui-xu LIN, Shi-bao ZHENG

Affiliation(s):  Institute of Image Comm. & Info. Processing, Dept. of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; more

Corresponding email(s):   guixu_lin@sjtu.edu.cn

Key Words:  Visual quality, Human visual system, Rate control, H.264/AVC


Gui-xu LIN, Shi-bao ZHENG. Perceptual importance analysis for H.264/AVC bit allocation[J]. Journal of Zhejiang University Science A, 2008, 9(2): 225~231.

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Abstract: 
The existing h.264/AVC rate control schemes rarely include the perceptual considerations. As a result, the improvements in visual quality are hardly comparable to those in peak signal-to-noise ratio (PSNR). In this paper, we propose a perceptual importance analysis scheme to accurately abstract the spatial and temporal perceptual characteristics of video contents. Then we perform bit allocation at macroblock (MB) level by adopting a perceptual mode decision scheme, which adaptively updates the Lagrangian multiplier for mode decision according to the perceptual importance of each MB. Simulation results show that the proposed scheme can efficiently reduce bit rates without visual quality degradation.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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