Improved single video object rate control for MPEG-4

Author

Chen, Zhenzhong ; Ngan, King N.

Author_Institution

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

Volume

3

fYear

2003

fDate

6-10 April 2003

Abstract

Rate control plays a central role in constant bit-rate (CBR) video coding applications using MPEG-4. The paper considers single video object (SVO) rate control for MPEG-4 and presents a new rate control algorithm based on the quadratic rate-distortion model. Based on a new measure for the encoding complexity, the constraints of the model parameter estimation and a novel quantizer control strategy are proposed. 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

computational complexity; data compression; image sequences; parameter estimation; quantisation (signal); rate distortion theory; video coding; CBR video coding; MPEG-4; PSNR; compressed video sequences; constant bit-rate video coding; encoding complexity; parameter estimation; quadratic rate-distortion model; quantizer control strategy; rate control algorithm; single video object rate control; Bit rate; Centralized control; Encoding; MPEG 4 Standard; Parameter estimation; Quantization; Rate-distortion; Video coding; Video compression; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1199113

Filename

1199113