Fast Algorithm for Intra-Prediction Mode Selection in H.264/AVC Based on Edge Direction Histogram
Ziguan Cui · Computer Technology and Development · 2008
H.264/AVC video coding standard aims to enable to significantly improve compression performance compared to all existing video coding standards.In order to achieve that,a robust rate-distortion optimization(RDO) technique is employed to select the best coding mode.As a result,the complexity of computation increase drastically,which makes it difficult for practical applications such as real time video compression.Presents a fast mode selection for intra-prediction based on Pan algorithm to reduce complexity.First,Pan's fast algorithm is improved;meanwhile,joining the relation of chroma predictive mode and luminance predictive mode,besides the relation of Intra-prediction 16×16 and 4×4 blocks.Experiment result shows that the algorithm increases the speed of intra-prediction with negligible loss of peak signal to noise ratio.