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一种具有拓扑自适应性的图象两步分割方法

DOI: 10.11834/jig.2002011335

Keywords: 两步分割方法,图象分割,围道估计,棱边检验算子,活动围道,B样条,拓扑自适应性,图象处理

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Abstract:

为了准确提取出感兴趣区域的边界,研究出一种具有拓扑自适应性的图象两步分割方法,即基于棱边检测算子的B样条活动围道分割方法,该方法首先是进行图象的底层分割,即用基于图象局部特性(像元邻域)操作的棱边检测算子来检测图象的棱边点,然后进行图象的高层分割,即用基于图象全局统计特性的B样条活动围道分割方法来求取对象的准确边界,另外,还提出了基于区域欧拉数的拓扑自适应处理方案,该两图像分割方法具有人为干预少,对初始条件不敏感,拓扑自适应性强等优点,试验结果证明了该方法的有效性。

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