Reduction in CABAC encoding time of the HEVC

Abstract

As time is important in coding video, this paper presents an optimization method to reduce encoding time of CABAC with respect to the compression rate, delivering the same video quality. This method is based on the statistics of the context models of syntax elements which have a higher number of contexts than others to be compelled in order to reduce their number and thus saving encoding time. In fact, we are interested in residual syntax elements which represents 65% of total number of models. This work is innovative since this idea was not dealt with before. Many simulations are done covering different settings of syntax elements for a variety of video sequences, using two configurations with two quantized parameters QP.