| 一种基于标记阈值的分水岭分割新算法 |
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| 引用本文： | 关新平,黄娜,唐英干. 一种基于标记阈值的分水岭分割新算法[J]. 系统工程与电子技术, 2009, 31(4): 972-975 |
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| 作者姓名： | 关新平 黄娜 唐英干 |
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| 作者单位： | 燕山大学工业计算机控制工程河北省重点实验室, 河北, 秦皇岛, 066004 |
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| 基金项目： | 国家杰出基金，扬州大学博士基金 |
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| 摘 要： | 为了克服分水岭算法的过分割问题,提出了一种新的带标记(marker)的分水岭分割算法。该方法首先根据邻接像素的连通性提取原始图像梯度的局部极小值点,然后采用最大熵阈值法去除由噪声及图像细节纹理所产生的伪极小值点,将修改后得到的极小值点强制作为标记,并在原始梯度图像上应用带标记的分水岭算法。该方法的优点是可以自适应地提取标记而不需要先验知识,克服了标记提取的困难。实验结果表明,该算法能有效地减少分水岭的过分割现象。
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| 关 键 词： | 图像分割 分水岭 多尺度梯度 标记 最大熵阈值 |
| 收稿时间： | 2007-12-13 |
| 修稿时间： | 2008-09-26 |
New watershed segmentation algorithm via marker threshold |
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| GUAN Xin-ping,HUANG Na,TANG Ying-gan. New watershed segmentation algorithm via marker threshold[J]. System Engineering and Electronics, 2009, 31(4): 972-975 |
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| Authors: | GUAN Xin-ping HUANG Na TANG Ying-gan |
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| Affiliation: | Key Lab of Industrial Computer Control Engineering of Hebei Province, Yanshan Univ., Qinhuangdao 066004, China |
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| Abstract: | An improved marker-controlled watershed segmentation method is proposed to reduce the oversegmentation of watershed algorithm.Firstly,regional minimas in the gradient image are extracted according to the connectivity of adjacent pixels.Then,a maximum entropy threshold method is used to exclude the local minimas generated by the noise and texture.Finally,regarding the modified minimum points as markers,the watershed algorithm is applied to the modified gradients by the markers.The advantages of this method is that makers are extracted adaptively without the need for prior knowledges,which overcomes marker extraction difficulties.Experimental results show that the proposed algorithm can be effective overcomes the over-segmentation problem of watershed. |
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