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基于MPEG的全局运动估计技术

Keywords: MPEG全局运动估计运动矢量四参数模型摄像机运动补偿视频流

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Abstract:

提出了一种基于MPEG(movingPictureexpertsgroup)的全局运动估计技术;利用四参数模型来描述由摄像机运动带来的全局运动,再利用基于块匹配的算法来求解4个参数,进而作相应的运动补偿,由于MPEG视频流中的运动矢量蕴含了最优块匹配的信息,所以不需要对MPEG视频流完全解码,即可进行参数估计,实验证明该算法速度较快,并能通过运动补偿排除由摄像机运动造成的伪运动区域的干扰。

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