Fuzzy Edge Detection Based on Cloud Model
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摘要: 基于云模型和模糊集理论,提出了一种新的边缘检测方法.该方法根据图像灰度,借助区域生长算法产生对象云;通过云运算生成边界云并构建模糊隶属带,进而在条件概率和模糊划分熵的基础上,根据最大模糊熵原则确定最优阈值,对图像模糊边界进行提取.试验结果表明,该算法能保留大量低灰度信息,可以获得较好的检测效果.Abstract: Based on the cloud model and the fuzzy set theory,a new edge detection method was proposed.Firstly,with this method,object clouds are generated using the region growth algorithm on the basis of the gray level of images.Secondly,boundary clouds and fuzzy membership regions for two or more clouds are obtained based on Boolean calculation.Thirdly,the optimal threshold is determined through maximizing the entropy of fuzzy partition based on conditional probabilities and entropy of fuzzy partition.Finally,an edge detection procedure is executed on the edge images.The experimental results show that with the proposed method plenty of lower level gray can be preserved to obtain more favorable edge detection.
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Key words:
- cloud model /
- object cloud /
- fuzzy edge /
- fuzzy membership region /
- edge detection
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傅晓薇,方康玲,李曦.一种改进的快速模糊边缘检测算法[J].武汉科技大学学报(自然科学版),2002,25(1):92-95.Fu X W,Fang K L,Li X.An improved,fast fuzzy algorithm for edge detection[J].Journal of Wuhan Yejin University of Science and Technology,2002,25(1):92-95.[2] Ho K H L.Fuzzy edge detection by fuzzy categorization and classification of edges [A].International Joint Conference on Artificial Intelligence Workshop [C].Montreal:IEEE Computer Society,1995.182-196.[3] 邸凯昌.空间资料挖掘与知识发现(SDMKD)[M].武汉:武汉大学出版社,2001.42-43.[4] 郑顺义,张祖勋,张剑清.基于物方影像匹配和概率松弛的断面自动提取[J].测绘信息与工程,2004,29(2):26-27.Zheng S Y,Zhang Z X,Zhang J Q.Automatic profile extraction based on object space image matching and probability relaxation algorithm[J].Wtusm Bulletin of Science and Technology,2004,29(2):26-27.[5] 章琉晋.图像分割[M].北京:科学出版社,2001.74-75.[6] 李德毅,孟海军,史雪梅.隶属云和隶属云发生器[J].计算机研究与发展,1995,32(6):16-21.Li D Y,Meng H J,Shi X M.Membership clouds and membership cloud generators[J].Journal of Computer Research and Develpment,1995,32(6):16-21.[7] 孙伟,夏正良,潘泓.一种基于模糊划分的边缘检测算法[J].中国图象图形学报,2004,9(1):18-22.Sun W,Xia L Z,Pan H.A new edge detection algorithm based on fuzzy partition[J].Journal of Image and Graphics,2004,9(1):18-22. -
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