| 基于梯度矢量流和主动轮廓模型的海陆边界提取 |
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| 引用本文： | 胡倩,张丰,刘仁义,杜震洪.基于梯度矢量流和主动轮廓模型的海陆边界提取[J].浙江大学学报(理学版),2013,40(6):698-704. |
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| 作者姓名： | 胡倩 张丰 刘仁义 杜震洪 |
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| 作者单位： | [1]浙江大学浙江省资源与环境信息系统重点实验室,浙江杭州310028 [2]浙江大学地理信息科学研究所,浙江杭州310028 |
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| 基金项目： | 国家自然科学基金资助项目（41001227,41101356）;海洋公益性行业科研专项经费资助项目（20090512-8）;浙江省科技攻关计划项目（20IOC33146）;中央高校基本科研业务费专项（2011QNA3008）. |
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| 摘 要： | 利用边缘检测与主动轮廓模型组合的方法可提取海陆边界线，但易受轮廓跟踪的缺点影响.在该方法的基础上，利用边缘检测与梯度矢量流的有向力作用生成初始轮廓线，再使用主动轮廓模型对初始轮廓线进行调整，得到精确的海陆边界.实验证明该方法可简便地生成有效的初始轮廓线并准确提取海陆边界，避免使用轮廓跟踪法.该方法可利用GIS数据辅助以简化提取流程.
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| 关 键 词： | 边缘检测 主动轮廓模型 梯度矢量流 海陆边界 GIS |
| 收稿时间： | 2012-11-12 |
Land-sea boundary extraction based on gradient vector flow and active contour model |
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| HU Qian,ZHANG Feng,LIU Ren-yi,DU Zhen-hong.Land-sea boundary extraction based on gradient vector flow and active contour model[J].Journal of Zhejiang University(Sciences Edition),2013,40(6):698-704. |
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| Authors: | HU Qian ZHANG Feng LIU Ren-yi DU Zhen-hong |
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| Affiliation: | 1. Zhejiang Provincial Key Lab of G/S, Zhejiang University, Hangzhou 310028, China 2. Department of Geographic Information Science, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | Active contour model combined with traditional edge detection can be used to extract land-sea boundary, but it is sensitive to shortcomings of boundary tracing. Based on the traditional method, edge detection and the di- rected force of gradient vector flow are used to generate the initial contour, then the active contour model is used to adjust the initial contour to the actual boundary precisely. According to the experiments, the new method can gener- ate the initial contour simply and extract land-sea boundary accurately without boundary tracing. What＇s more, the new method can be used to simplify the extraction process with GIS（Geographic Information System） assistance. |
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| Keywords: | edge detection active contour model gradient vector flow land-sea boundary GIS |
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