A Scene Complexity Adaptive Intra-frame Rate Control for Video Coding

Author

Jiang, Zhiping ; Dai, Qingguang ; Ai, Yunfeng

Author_Institution

Dept. of Comput. Sci., Chengdu Univ. of Technol., Leshan, China

fYear

2010

fDate

7-8 Aug. 2010

Firstpage

108

Lastpage

111

Abstract

Rate distortion of Intra-Frame (I-frame) plays a significant role in controlling video quality. Aiming at the deficiency of I-frame rate control of H.264, this paper presents a novel I-frame rate estimation method for H.264 rate control. Firstly, Rate-Complexity-Qstep (RCQ) model of I-frame was gotten by curve fitting, secondly, the information of encoded frames was used to update I-frame weight relative to P-frame, and a reasonable target bits was allocated for I-frame, finally, I-frame Qstep was calculated under the target bits by RCQ model. Experimental results show that the proposed method obtains more accurate I-frame output bit rate and more steady PSNR fluctuation compared with H.264 standard algorithm.

Keywords

curve fitting; rate distortion theory; video coding; H.264 rate control; curve fitting; frame rate estimation method; rate distortion; rate-complexity-qstep model; scene complexity adaptive intra-frame rate control; video coding; video quality control; H.264; rate control; scene complexity; video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Communications (Mediacom), 2010 International Conference on

Conference_Location

Hong Kong

Print_ISBN

978-0-7695-4136-5

Type

conf

DOI

10.1109/MEDIACOM.2010.19

Filename

5694156