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Main Title: A two-level sliding-window VBR controller for real-time hierarchical video coding
Author(s): de-Frutos-López, Manuel
del-Ama-Esteban, Óscar
Sanz-Rodríguez, Sergio
Díaz-de-María, Fernando
Type: Conference Object
Language Code: en
Abstract: In this paper, a novel rate control algorithm for real-time VBR hierarchical video coding is proposed. The algorithm works at two levels that are called long- and short-term levels. The long-term level aims at ensuring that the bit count does not exceed the maximum allowed amount for a few-second long window. To this end, it considers a sliding window spanning several GOPs, which is shifted on a GOP basis. In doing so, it avoids the potentially sharp adjustments at the end of the GOP that usually happen in non-sliding approaches. The short-term level aims to provide a proper QP adaptation to fit the target bit budget, which is dictated by the long-term level. It also uses a sliding window, which in this case extends over one GOP. The proposed algorithm has been assessed in realistic conditions for a variety of video sequences. It has been compared to both a constant quality and CBR hierarchical approaches, showing an excellent performance in terms of both rate-distortion and PSNR variation.
Issue Date: 2010
Date Available: 9-Mar-2017
DDC Class: 004 Datenverarbeitung; Informatik
Subject(s): rate control
sliding window
Proceedings Title: 2010 IEEE International Conference on Image Processing : ICIP
Publisher: IEEE
Publisher Place: New York, NY [u.a.]
Publisher DOI: 10.1109/ICIP.2010.5651371
Page Start: 4217
Page End: 4220
ISBN: 978-1-4244-7992-4
ISSN: 1522-4880
Appears in Collections:FG Architektur eingebetteter Systeme » Publications

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