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Rate control by partial differential equation modeling

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3 Author(s)
Zhongwei Zhang ; Inst. of Inf. & Commun. Eng., Xi''an Jiaotong Univ., China ; Guizhong Liu ; Hongliang Li

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.

Published in:

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on  (Volume:1 )

Date of Conference:

6-9 Dec. 2004