基于邻块预测的H.264快速帧内预测模式选择算法  

Fast Intra-Prediction Mode Selection Algorithm Based on Adjacent Blocks Prediction for H.264

作　　者：倪红霞[1] 范志浩[1] 

机构地区：[1]杭州电子科技大学自动化学院,杭州310018

出　　处：《江南大学学报（自然科学版）》2010年第4期448-454,共7页Joural of Jiangnan University (Natural Science Edition)　

基　　金：浙江省科技计划重大项目(2008C01015-2);浙江省自然科学基金项目(Y1080674)

摘　　要：针对Pan提出的快速帧内预测模式选择算法存在侯选模式不够精简,以及仅利用了块内部纹理信息进行侯选模式的预测等不足,提出了一种改进的基于邻块预测的H.264快速帧内预测模式选择算法。改进算法不仅采用块内部纹理信息预测,而且利用帧内相邻已编码块进行空域预测,以得到更加精简的侯选模式,从而减少参与选择的模式数量,提高了编码速度。实验结果表明,与Pan算法和JM全搜索算法相比,该算法在保持较好的编码图像质量的同时,可有效地提高编码速度。A algorithm of fast intra-prediction mode selection based on adjacent blocks prediction for H.264 was proposed in the paper,due to the two shortages of the Pan ＇s algorithm as follows： too many intra-prediction modes to be selected and the prediction of intra-prediction modes just using the inside information of the block.The new algorithm proposed not only predict the intra modes from the inside information of the block,but also from the outside information of the block,which can get the much less modes to be selected.The experiment results show that,compared with the Pan＇s algorithm,the new algorithm can decrease the encoding time notability,with good quality of video image.

关 键 词：H.264编码标准 帧内预测 帧内预测模式选择 邻块预测 

分 类 号：TN911.73[电子电信—通信与信息系统]