图象分割是图象处理中的一项重要工作，虽然目前手工与自动相结合的分割方法已在实际工作中得到了广泛应用，但由于图象的多义性和复杂性，许多分割工作仍无法利用计算机来自动完成．-Image segment plays an important role in the field of image processing and currently the hybrid approach combining the manual and automatic methods is widely used in segment practice.In this paper we present an algorithm capable of locating the target object ontour of sharp tips accurately in the interactive rate