电子学报2011，Vol.39Issue(z1)：19-23,5.
一种高效的基于H.264/AVC压缩域信息的全局运动估计方法
An Efficient Global Motion Estimation Algorithm on H.264/AVC Compression Domain
摘要
Abstract
An efficient global moron estimation algorithm on H.264/AVC comlression domain is proposed. Due to many technologies of video compression coding used in H.264/AVC,on H.264/AVC compression domain,the motion vector field contains a lot of noise blocks for global motion estimation. The valid motion vector number for global motion estimation is limited. In order to reduce the influence of noise motion vectors and improve accuracy and computational efficiency of global motion estimation,it is necessary to eilminate noise motion vectors during global motion estimation. In this paper,the noise blocks were eliminated efficaciously by using information of MVD (the difference between the current vector and the predicted vector) and reference block for MV prediction in H.264 bits strearn. The extensive experiments show that the proposed method is efficient and robust in terms of both computational complexity and accuracy.关键词
全局运动估计/H.264/AVC压缩域/运动矢量预测/运动矢量预测残差Key words
global motion estimation/H.264/AVC compression domain/motion vector prediction/motion vector difference分类
信息技术与安全科学引用本文复制引用
王喆,刘贵忠,钱学明..一种高效的基于H.264/AVC压缩域信息的全局运动估计方法[J].电子学报,2011,39(z1):19-23,5.基金项目
国家"973"项目(No.2007CB311002) （No.2007CB311002）
国家"863"项目(No.2009AA01Z409) （No.2009AA01Z409）
国家自然科学基金项目(No.60903121) （No.60903121）
