Title :
Rate control by partial differential equation modeling
Author :
Zhang, Zhongwei ; Liu, Guizhong ; Li, Hongliang
Author_Institution :
Inst. of Inf. & Commun. Eng., Xi´´an Jiaotong Univ., China
Abstract :
This work presents a novel rate-control model. Based on the famous heat conduction equation (HCE), a rate transmission equation (RTE) is proposed to describe the bit-rate behaviors during video coding. RTE is inherently the famous diffusion equation. A new rate-control model is derived from the special solution to RTE. Based on this model, a new rate-control scheme is proposed for MPEG-4 applications. Experiments show that the proposed scheme achieves a better buffer status and higher picture quality over the MPEG-4 Q2 scheme.
Keywords :
information theory; partial differential equations; video coding; MPEG-4 applications; bit-rate behaviors; buffer status; diffusion equation; heat conduction equation; higher picture quality; partial differential equation modeling; rate control; video coding; Control systems; Electronic mail; MPEG 4 Standard; Partial differential equations; Process control; Streaming media; Temperature; Video coding; Video compression; Video sequences;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412716
