Title :
Object-level bit allocation and scalable rate control for MPEG-4 video coding
Author :
He, Zhahaa ; Kim, Yong Kwan ; Mitra, Sanjit K.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
In this work, a novel framework for rate-distortion (R-D) analysis is developed. Based on this framework, an object-level bit allocation scheme is proposed for MPEG-4 video coding to determine the target number of bits for each video object. We then propose a macroblock-level rate control algorithm to achieve the bits target for each video object. The proposed bit allocation and rate control algorithm outperforms the VM8 rate control algorithm by providing more accurate rate regulation and significantly improved picture quality
Keywords :
code standards; rate distortion theory; variable rate codes; video coding; MPEG-4; R-D analysis; macroblock-level rate control algorithm; object-level bit allocation; picture quality; rate-distortion analysis; scalable rate control; video coding; Bit rate; Discrete cosine transforms; Image coding; Layout; MPEG 4 Standard; Performance analysis; Quantization; Rate distortion theory; Rate-distortion; Video coding;
Conference_Titel :
MPEG-4. 2001 Proceedings of Workshop and Exhibition on
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-7165-8
DOI :
10.1109/MPEG.2001.996449
