A Cauchy-density-based rate controller for H.264/AVC in low-delay environments

Oscar del-Ama-Esteban, Sergio Sanz-Rodriguez, Manuel de-Frutos-Lopez, Fernando Diaz-de-Maria
2009 2009 Picture Coding Symposium  
The accuracy of the Cauchy probability density function for modeling of the discrete cosine transform coefficient distribution has already been proved for the frame layer of the rate control subsystem of a hybrid video coder. Nevertheless, in some specific applications operating in real-time low-delay environments, a basic unit layer is recommended in order to provide a good trade-off between quality and delay control. In this paper, a novel basic unit bit allocation for H.264/AVC is proposed
more » ... sed on a simplified Cauchy probability density function source modeling. The experimental results show that the proposed algorithm improves the average peak signalto-noise ratio in 0.28 and 0.35 dB with respect to two well-known rate control schemes, while maintaining similar peak signal-to-noise ratio standard deviation and buffer occupancy evolution.
doi:10.1109/pcs.2009.5167438 dblp:conf/pcs/del-Ama-EstebanRdD09 fatcat:7l7h3om35reotcbxd5g36euvuy