Title :
A perceptual based dead-zone adjustment algorithm for H.264 [video coding]
Author :
Jiang, Wei ; Sun, Jun ; Yu, Songyu ; Wang, Jia
Author_Institution :
Inst. of Image Commun. & Inf. Process. Res., Shanghai Jiao Tong Univ., China
Abstract :
A new adaptive dead-zone adjustment algorithm has been developed, based on the human visual model, for H.264 video coding. In this paper, the proposed scheme utilizes rate-distortion (RD) optimization technology to adaptively adjust the dead-zone size. Also, incorporation of the human visual system model into the RD cost computation improves the performance. Compared with the H.264 reference coder, the proposed algorithm can efficiently improve the subjective viewing quality and reduce the bit rate by 10% on average.
Keywords :
adaptive signal processing; image reconstruction; rate distortion theory; video coding; visual perception; H.264 video coding standard; RD cost computation; adaptive dead-zone adjustment algorithm; bit rate reduction; dead-zone size adaptive adjustment; human visual system model; perceptual adjustment algorithm; rate-distortion optimization; reconstructed subjective viewing quality; Bit rate; Humans; IEC standards; ISO standards; Motion pictures; PSNR; Quantization; Rate-distortion; Video coding; Visual system;
Conference_Titel :
Intelligent Multimedia, Video and Speech Processing, 2004. Proceedings of 2004 International Symposium on
Print_ISBN :
0-7803-8687-6
DOI :
10.1109/ISIMP.2004.1434110
