【摘要】 根据对H.26L视频编码结构的研究,在运动估计补偿部分的重采样环节,采用立方卷积插值替代双线性插值,并给出自适应运动精度的概念.通过分析比较H.26L的立方卷积插值和H.263的双线性插值,指出立方卷积插值算法的优越性.最后实现了引入立方卷积插值算法的H.26L软件编解码器,使H.26L编码标准更加实用和有效.更多还原

【Abstract】 Based on the research of H.26L coding structure,a novel approach of image resampling in motion compensated prediction using the cubic convolution interpolation instead of the bilinear interpolation is proposed and the conception of adaptive motion accuracy is given.Compared with the bilinear interpolation in H.263,the cubic convolution interpolation has its advantages.Then we realized the H.26L software coder based on the cubic convolution interpolation.Implementation results suggest that cubic convolution interpolation make H.26L an effective video coding standard.更多还原