结合LOG算子和大津法的遥感影像边缘检测方法Edge detection of remote sensing image based on LOG algorithm and Otsu algorithm
刘剑飞,左小清,吴俐民,黄亮
摘要(Abstract):
针对遥感影像具有丰富的细节和混合噪声,采用传统高斯拉普拉斯(LOG)算子难以有效地提取遥感影像地物边缘信息,文章提出一种结合LOG算子和大津法(Otsu法)的遥感影像地物边缘信息提取算法。此算法采用中值滤波对原始影像进行消噪,利用Otsu算法对滤波后影像进行自适应阈值分割得到目标影像,采用LOG算子对目标影像进行边缘信息提取。以安宁某区域的遥感影像为例,实验结果表明,提出的算法与传统LOG算子相比,具有更高的提取精度,能有效地提取出遥感影像的真实边缘、减少伪边缘。
关键词(KeyWords): 边缘检测;高斯拉普拉斯算子;大津法;遥感影像
基金项目(Foundation): 国家自然科学基金项目(41061043);; 云南省教育厅科学研究基金项目(2011J075,2013J062)
作者(Author): 刘剑飞,左小清,吴俐民,黄亮
DOI: 10.16251/j.cnki.1009-2307.2015.01.023
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