Title :
ρ-domain bit allocation and rate control for real time video coding
Author :
He, Zhihai ; Mitra, Sanjit K.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
A novel framework for rate-distortion (RD) analysis is developed. Based on this framework, an optimum bit allocation scheme and an accurate rate control algorithm are proposed for real-time video coding with H.263+ (see Cote, G. et al., IEEE Trans. on Circuits and Systems for Video Technology, vol.8, p.849-66, 1998). With the proposed algorithm, the picture quality is significantly improved. The output bit rate of the video encoder is controlled robustly and accurately according to the network condition
Keywords :
rate distortion theory; video coding; H.263; bit allocation; network condition; picture quality; rate control; rate-distortion analysis; real time video coding; Bit rate; Discrete cosine transforms; Helium; Image coding; Performance analysis; Quantization; Rate distortion theory; Rate-distortion; Robust control; Video coding;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958172
