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Main Title: A Cauchy-density-based rate controller for H.264/AVC in low-delay environments
Author(s): del-Ama-Esteban, Óscar
Sanz-Rodríguez, Sergio
de-Frutos-López, Manuel
Díaz-de-María, Fernando
Type: Conference Object
Language Code: en
Abstract: The accuracy of the Cauchy probability density function for modeling of the discrete cosine transform coefficient distribution has already been proved for the frame layer of the rate control subsystem of a hybrid video coder. Nevertheless, in some specific applications operating in real-time low-delay environments, a basic unit layer is recommended in order to provide a good trade-off between quality and delay control. In this paper, a novel basic unit bit allocation for H.264/AVC is proposed based on a simplified Cauchy probability density function source modeling. The experimental results show that the proposed algorithm improves the average peak signal-to-noise ratio in 0.28 and 0.35 dB with respect to two well-known rate control schemes, while maintaining similar peak signal-to-noise ratio standard deviation and buffer occupancy evolution.
Issue Date: 2009
Date Available: 9-Mar-2017
DDC Class: 004 Datenverarbeitung; Informatik
Subject(s): H.264
basic unit
bit allocation
rate control
Proceedings Title: 2009 Picture Coding Symposium : PCS
Publisher: IEEE
Publisher Place: New York, NY [u.a.]
Publisher DOI: 10.1109/PCS.2009.5167438
Page Start: 1
Page End: 4
ISBN: 978-1-4244-4593-6
Appears in Collections:FG Architektur eingebetteter Systeme » Publications

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