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Main Title: Cauchy-density-based basic unit layer rate controller for H.264/AVC
Author(s): Sanz-Rodríguez, Sergio
del-Ama-Esteban, Óscar
de-Frutos-López, Manuel
Díaz-de-María, Fernando
Type: Article
Language Code: en
Abstract: The rate control problem has been extensively studied in parallel to the development of the different video coding standards. The bit allocation via Cauchy-density-based rate-distortion modeling of the discrete cosine transform coefficients has proved to be one of the most accurate solutions at picture level. Nevertheless, in some specific applications operating in real-time low-delay environments, a basic unit (BU) layer is recommended in order to provide a good tradeoff between picture quality and delay control. In this letter, a novel BU bit allocation for H.264/advanced video coding is proposed based on a simplified Cauchy probability density function source modeling. The experimental results are twofold: 1) the proposed rate control algorithm (RCA) achieves an average peak signal-to-noise ratio improvement of 0.28 dB respect to a well-known BU layer RCA, while maintaining a similar buffer occupancy evolution, and 2) it achieves to notably reduce the buffer occupancy fluctuations respect to a well-known picture layer RCA, while maintaining similar quality levels.
Issue Date: 2010
Date Available: 23-Feb-2017
DDC Class: 004 Datenverarbeitung; Informatik
620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): basic unit (BU)
H264/advanced video coding (AVC)
bit allocation
rate control
Journal Title: IEEE transactions on circuits and systems for video technology : a publication of the Circuits and Systems Society
Publisher: IEEE
Publisher Place: New York, NY [u.a.]
Volume: 20
Issue: 8
Publisher DOI: 10.1109/TCSVT.2010.2051369
Page Start: 1139
Page End: 1143
EISSN: 1558-2205
ISSN: 1051-8215
Appears in Collections:FG Architektur eingebetteter Systeme » Publications

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