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基层层次光流的半自动时空视频分割技术

DOI: 10.11834/jig.200208248

Keywords: MPEG-4,视频分割,面向对象编码,视频编码,图象分割,空域分割,时域分割,层次光流

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Abstract:

在新一代MPEG-4视频编码标准中,为了支持面向对象编码和实现基于内容的应用,视频的半自动分割成为关键技术之一,为此提出了一种基于层次光流的半自动时空视频分割算法。该算法由空域分割和时域分割组成。在空域分割中,提出的基于点的图形用户界面(PBGUI),在用户的协助下,能够精确地定义需要分割的视频对象(VO)。时域分割根据空域分割的结果采用层次光流算法对视频对象进行边界和整体跟踪。实验结果表明,利用该算法,能够精确地分割出视频对象。

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