New bit-rate control models for image and video transmission

Author

Canhui Cai ; Ding, Runfao ; Mitra, Sanjit K.

Author_Institution

Sch. of Electron. Inf. Eng., Tianjin Univ., China

Volume

2

fYear

2002

fDate

29 June-1 July 2002

Firstpage

958

Abstract

This paper presents two new schemes of bit rate control: a linear significant coefficient percentage model and a mixed power function model of step-size. Based on the rate-distortion characteristics of wavelet images, the relationship between the percentage of significant coefficients and the output bit-rate is examined, and a linear model is developed. Next, a mixed power function model is introduced as the regression of experimental results. Both bit rate control algorithms have been implemented for the X-tree wavelet coder. Simulation results have verified the effectiveness of the new bit-rate control models.

Keywords

image coding; rate distortion theory; transform coding; video coding; wavelet transforms; X-tree wavelet coder; bit rate control; image coding; image transmission; linear model; linear significant coefficient percentage model; mixed power function model; rate-distortion characteristics; video transmission; wavelets; Bit rate; Computational complexity; Decoding; Image coding; Image communication; Laplace equations; Power engineering and energy; Power engineering computing; Rate-distortion; Streaming media;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on

Print_ISBN

0-7803-7547-5

Type

conf

DOI

10.1109/ICCCAS.2002.1178947

Filename

1178947