On Optimizing H. 264/AVC Rate Control by Improving R-D Model and Incorporating HVS Characteristics. (29th August 2010)

• Record Type: Journal Article
• Authors: Zhu Zhu, Zhongjie Zhongjie; Wang Wang, Yuer Yuer; Bai Bai, Yongqiang Yongqiang; Jiang Jiang, Gangyi Gangyi
• Other Names: Kondi Kondi Lisimachos P. Lisimachos P. Academic Editor.
• Is Part Of: EURASIP journal on advances in signal processing. Volume 2010(2010)
• Publication Date: 2010-08-29
• Subjects: Signal processing -- Periodicals; Traitement du signal; Signal processing; Periodicals; 621.3822
• DOI: 10.1155/2010/830605
• Languages: English
• ISSNs: 1687-6172

Abstract

Abstract : The state-of-the-art JVT-G012 rate control algorithm of H.264 is improved from two aspects. First, the quadratic rate-distortion (R-D) model is modified based on both empirical observations and theoretical analysis. Second, based on the existing physiological and psychological research findings of human vision, the rate control algorithm is optimized by incorporating the main characteristics of the human visual system (HVS) such as contrast sensitivity, multichannel theory, and masking effect. Experiments are conducted, and experimental results show that the improved algorithm can simultaneously enhance the overall subjective visual quality and improve the rate control precision effectively.