An omnibitrate control algorithm for DCT video codec

Author

Li, Guoping ; He, Yun

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

2

fYear

2004

fDate

31 Aug.-4 Sept. 2004

Firstpage

1203

Abstract

A rate control tool in the test model TMN8 of H.263+ is well known for low-delay communications. However, the model accepted by TMN8 rate control is valid only in low bit rate environment In this work, we present a piecewise linear model which can cover wide band of bit rate. An omnibitrate control algorithm (OBC) derived by our model have better performance than that of TMN8 and VM8 rate control in the quality of the encoded video and accuracy of bit allocation and can be applied in a wide range of bit rate environments. Experiment results of OBC with H.263+ and MPEG4 codec show good controlling performance in the wide given target bit rate. Finally, this model can be used in new standard H.264/AVC.

Keywords

code standards; discrete cosine transforms; piecewise linear techniques; video codecs; video coding; DCT video codec; H.263; H.264-AVC standard; MPEG4 codec; OBC; TMN8; bit allocation; low-delay communication; omnibitrate control algorithm; piecewise linear model; rate control tool; video coding; Automatic voltage control; Bit rate; Communication system control; Digital communication; Discrete cosine transforms; Electronic equipment testing; Helium; MPEG 4 Standard; Rate distortion theory; Video codecs;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on

Print_ISBN

0-7803-8406-7

Type

conf

DOI

10.1109/ICOSP.2004.1441540

Filename

1441540