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投稿时间：2007-04-25
投稿时间：2007-04-25
中文摘要: 针对边缘流方法检测图像边界得到的边界不连续问题，提出了把边缘流作为水平集方程中的一个变量，并将多尺度思想引入该方程。该方法首先在大尺度图像下得到相应尺度的边缘流矢量，将其代入水平集方程，通过求解水平集方程，找出图像目标边界的大致轮廓，然后利用大尺度所得到的大致轮廓作为高一级尺度的水平集方程的初始轮廓，计算相应的边缘流矢量，代入水平集方程求解，逐步进行轮廓优化，最终实现图像分割。采用该方法提取图像目标边界，不仅解决了边缘流方法中边界不连续的问题，也使水平集方法中曲线演化速度太慢的问题得到大大的改善。该方法用
Abstract:In order to solve the edge discontinuity produced by the edgeflow method used to detect the image edge, the edgeflow was made a variable into the level set equation and a multi-scale idea was also introduced into it. First, arough contour was found out by the way that the edgeflow vector, being acquired through the image with large scale, and it was put into the level set equation; Second, the rough contour was gradually optimized as an initial one in another level set equation of smaller scale when its edgeflow vector was calculated out and put into level equation to solve; Finally, the segmentation of image was carried out. The results showed that it eliminates the edge discontinuity and speeds up the curve evolution when applied to the segentation of conglomerate image.
文章编号：20080125 中图分类号： 文献标志码：
基金项目:四川省科技攻关资助项目（05GG021-026-03）
作者简介:
引用文本：
吴晓红,罗代升,王正勇.基于边缘流的多尺度水平集砾岩图像分割[J].工程科学与技术,2008,40(1):133-137.
.Edgeflow-based Multi-scale Level Set Segmentation for Conglomerate Images[J].Advanced Engineering Sciences,2008,40(1):133-137.
引用文本：
吴晓红,罗代升,王正勇.基于边缘流的多尺度水平集砾岩图像分割[J].工程科学与技术,2008,40(1):133-137.
.Edgeflow-based Multi-scale Level Set Segmentation for Conglomerate Images[J].Advanced Engineering Sciences,2008,40(1):133-137.