Improved single-video-object rate control for MPEG-4

Author

Ngan, King N. ; Meier, Thomas ; Chen, Zhenzhong

Author_Institution

Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore

Volume

13

Issue

5

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

385

Lastpage

393

Abstract

Rate control plays a central role in constant bit-rate video coding applications using MPEG-4. This paper considers single-video-object rate control for MPEG-4 and presents a new rate-control algorithm based on the quadratic rate-distortion (R-D) model. The major innovations are a novel constraint for the least-mean-square estimation of the model parameters of the R-D function, a new measure for the encoding complexity, novel quantizer control and an efficient frame skipping strategy. Simulation results show that the MPEG-4 coder, using the proposed algorithm, can achieve a higher PSNR than a coder using the conventional rate-control algorithm.

Keywords

code standards; data compression; least mean squares methods; quantisation (signal); rate distortion theory; telecommunication control; telecommunication standards; video coding; LMS estimation; MPEG-4 coder; PSNR; R-D function; constant bit-rate video coding; efficient frame skipping; encoding complexity; least-mean-square estimation; model parameters; quadratic rate-distortion model; quantizer control; rate-control algorithm; simulation results; single-video-object rate control; video-coding standards; Bit rate; Centralized control; MPEG 4 Standard; PSNR; Quantization; Rate-distortion; Technological innovation; Transform coding; Video coding; Video sequences;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/TCSVT.2003.811609

Filename

1201113