A Rapid Intra Prediction Mode Decision Algorithm for AVS-M Video Coding
Donghuan Liu · 2006
As a mobile video standard owned by China,AVS-M adopts hybrid coding based on block whose intra prediction is just for 4×4 block.For luma intra prediction,there are 9 modes and the choice of optimized mode is very complex.In this paper,a rapid intra prediction mode decision algorithm is presented.Its basic idea is to down sample in 4×4 luma block for cost computation and determine a candidate mode set in advance.Simulation results show the rapid algorithm can save about 20%~30% encoding time for all intra prediction coding with a little performance degradation.