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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: 4913

Citations:  Bibtex RefMan EndNote GB/T7714

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


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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T1 - Perceptual importance analysis for H.264/AVC bit allocation
A1 - Gui-xu LIN
A1 - Shi-bao ZHENG
J0 - Journal of Zhejiang University Science A
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SP - 225
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A071355

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


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