结合海岸类型和潮位校正的海岸线遥感提取
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摘要
不同类型的海岸具有不同的地物特征,单一算法无法保证海岸线提取精度。针对现有研究多为利用遥感图像进行瞬时水边线提取,从而缺少潮位校正和精度验证的问题,该文提出一种结合海岸类型和潮位校正的海岸线遥感提取方法。以秦皇岛市海岸为例,采用高分辨率SPOT4卫星图像进行瞬时水边线提取,提取方法包括最小噪声分离变换、改进的归一化差异水体指数、数学形态学方法和改进的Canny边缘检测方法,并根据潮位数据计算潮滩坡降,从而准确获取海岸线。利用同时期海岸线实地GPS测量数据对遥感提取的海岸线进行精度验证。结果表明,使用该文方法提取的海岸线精度较高。
The accuracy of coastline extraction can't be guaranteed by applying a single algorithm,because different types of coasts have different characteristics. The existing researches are mostly focused on the extraction of instantaneous waterline,with the lacking of tidal correction and verification of accuracy. In this paper,the authors presented a method combining coastline extraction with coastal type and tidal correction. MNF rotation,MNDWI, morphology and edge detection were applied to SPOT4 data acquired in Qinhuangdao coastal zone to extract instantaneous waterline. Besides,the coastline was extracted accurately by integrating tidal data to calculate the slope of shoal. Moreover,the verification of the accuracy of coastline extraction was achieved by the GPS data obtained in the same period. The results show that the precision of coastline extraction by the method proposed in this paper is high.
The accuracy of coastline extraction can't be guaranteed by applying a single algorithm,because different types of coasts have different characteristics. The existing researches are mostly focused on the extraction of instantaneous waterline,with the lacking of tidal correction and verification of accuracy. In this paper,the authors presented a method combining coastline extraction with coastal type and tidal correction. MNF rotation,MNDWI, morphology and edge detection were applied to SPOT4 data acquired in Qinhuangdao coastal zone to extract instantaneous waterline. Besides,the coastline was extracted accurately by integrating tidal data to calculate the slope of shoal. Moreover,the verification of the accuracy of coastline extraction was achieved by the GPS data obtained in the same period. The results show that the precision of coastline extraction by the method proposed in this paper is high.
引文
[1]马小峰.海岸线卫星遥感提取方法研究[D].大连:大连海事大学,2007.Ma X F.The means of withdrawing coastline by remote sensing[D].Dalian:Dalian Maritime University,2007.
[2]宋玮.基于不动点计算的岸线动态分析方法[D].青岛:中国海洋大学,2004.Song W.A dynamic analysis method of coastline based on computation of stationary points[D].Qingdao:Ocean University of China,2004.
[3]夏东兴,段焱,吴桑云.现代海岸线划定方法研究[J].海洋学研究,2009,27(z1):28-33.Xia D X,Duan Y,Wu S Y.Study on the methodology of recent coastline delimitation[J].Journal of Marine Sciences,2009,27(z1):28-33.
[4]申家双,翟京生,郭海涛,等.海岸线提取技术研究[J].海洋测绘,2009,29(6):74-77.Shen J S,Zhai J S,Guo H T,et al.Study on coastline extraction technology[J].Hydrographic Surveying and Charting,2009,29(6):74-77.
[5]林桂兰,郑勇玲.海岸线修测的若干技术问题探讨[J].海洋开发与管理,2008,25(7):61-67.Lin G L,Zheng Y L.Discussion on some technical problems of coastline revision[J].Ocean Development and Management,2008,25(7):61-67.
[6]刘鹏.海岸线影像特征提取方法与实证研究[D].福州:福建师范大学,2008.Liu P.Coastline image feature extraction methods and empirical study[D].Fuzhou:Fujian Normal University,2008.
[7]Li R X,Ma R J,Di K C.Digital tide-coordinated shoreline[J].Marine Geodesy,2002,25(1/2):27-36.
[8]Ryu J H,Won J S,Kyung K D,et al.Waterline extraction from Landsat TM data in a tidal flat a case study in Gomso bay,Korea[J].Remote Sensing of Environment,2002,83(3):442-456.
[9]Liu H,Jwzek K C.Automated extraction of coastline from satellite imagery by integrating Canny edge detection and locally adaptive thresholding methods[J].International Journal of Remote Sensing,2004,25(5):937-958.
[10]Lee J S,Jurkevich I.Coastline detection and tracing in SAR images[J].IEEE Transactions on Geosciences and Remote Sensing,1990,28(4):662-668.
[11]Chen A J,Chen C F,Chen K S.Investigation of shoreline change and migration along Wai-San-Ding-Zou Barrier island,central west Taiwan[J].Geoscience and Remote Sensing Symposium,1995(3):2097-2099.
[12]Ryan T W,Semintilli P J,Yuen P,et al.Extraction of shoreline features by neural nets and image processing[J].Photogrammetry and Remote Sensing,1991,57(7):947-955.
[13]冯永玖,韩震.海岸线遥感信息提取的元胞自动机方法及其应用[J].中国图象图形学报,2012,17(3):441-446.Feng Y J,Han Z.Cellular automata approach to extract shoreline from remote sensing imageries and its application[J].Journal of Image and Graphics,2012,17(3):441-446.
[14]黄海军,李成治,郭建军.卫星影像在黄河三角洲岸线变化研究中的应用[J].海洋地质与第四纪地质,1994,14(2):29-37.Huang H J,Li C Z,Guo J J.Application of Landsat images to the studies of the shoreline changes of the Huanghe River delta[J].Marine Geology and Quaternary Geology,1994,14(2):29-37.
[15]马小峰,赵冬至,邢小罡,等.海岸线卫星遥感提取方法研究[J].海洋环境科学,2007,26(2):185-189.Ma X F,Zhao D Z,Xing X G,et al.Means of withdrawing coastline by remote sensing[J].Marine Environmental Science,2007,26(2):185-189.
[16]Laben.Process for enhancing the spatial resolution of multispectral imagery using pan-sharpening:US,6 011 875[P].2000-01-04.
[17]Zhang X K,Zhang X,Lan Q Q,et al.Automated detection of coastline using Landsat TM based on water index and edge detection methods[C]//Proceedings of the 2nd International Workshop on Earth Observation and Remote Sensing Applications,Shanghai,2012:153-156.
[18]Otsu N A.Threshold selection method from gray-level histogram[J].IEEE Transactions on Systems,Man,and Cybernetics,1979,9(1):62-66.
[19]徐涵秋.利用改进的归一化差异水体指数(MNDWI)提取水体信息的研究[J].遥感学报,2005,9(5):589-595.Xu H Q.A study on information extraction of water body with the modified normalized difference water index(MNDWI)[J].Journal of Remote Sensing,2005,9(5):589-595.
[20]王李娟,牛铮,赵德刚,等.基于ETM遥感影像的海岸线提取与验证研究[J].遥感技术与应用,2010,25(2):235-239.Wang L J,Niu Z,Zhao D G,et al.The study of coastline extraction and validation using ETM remote sensing image[J].Remote Sensing Technology and Application,2010,25(2):235-239.
[21]张明.基于小波分析的淤泥质潮滩水边线提取[D].上海:华东师范大学,2008.Zhang M.Waterline extraction of muddy coast based on wavelet analysis[D].Shanghai:East China Normal University,2008.
[2]宋玮.基于不动点计算的岸线动态分析方法[D].青岛:中国海洋大学,2004.Song W.A dynamic analysis method of coastline based on computation of stationary points[D].Qingdao:Ocean University of China,2004.
[3]夏东兴,段焱,吴桑云.现代海岸线划定方法研究[J].海洋学研究,2009,27(z1):28-33.Xia D X,Duan Y,Wu S Y.Study on the methodology of recent coastline delimitation[J].Journal of Marine Sciences,2009,27(z1):28-33.
[4]申家双,翟京生,郭海涛,等.海岸线提取技术研究[J].海洋测绘,2009,29(6):74-77.Shen J S,Zhai J S,Guo H T,et al.Study on coastline extraction technology[J].Hydrographic Surveying and Charting,2009,29(6):74-77.
[5]林桂兰,郑勇玲.海岸线修测的若干技术问题探讨[J].海洋开发与管理,2008,25(7):61-67.Lin G L,Zheng Y L.Discussion on some technical problems of coastline revision[J].Ocean Development and Management,2008,25(7):61-67.
[6]刘鹏.海岸线影像特征提取方法与实证研究[D].福州:福建师范大学,2008.Liu P.Coastline image feature extraction methods and empirical study[D].Fuzhou:Fujian Normal University,2008.
[7]Li R X,Ma R J,Di K C.Digital tide-coordinated shoreline[J].Marine Geodesy,2002,25(1/2):27-36.
[8]Ryu J H,Won J S,Kyung K D,et al.Waterline extraction from Landsat TM data in a tidal flat a case study in Gomso bay,Korea[J].Remote Sensing of Environment,2002,83(3):442-456.
[9]Liu H,Jwzek K C.Automated extraction of coastline from satellite imagery by integrating Canny edge detection and locally adaptive thresholding methods[J].International Journal of Remote Sensing,2004,25(5):937-958.
[10]Lee J S,Jurkevich I.Coastline detection and tracing in SAR images[J].IEEE Transactions on Geosciences and Remote Sensing,1990,28(4):662-668.
[11]Chen A J,Chen C F,Chen K S.Investigation of shoreline change and migration along Wai-San-Ding-Zou Barrier island,central west Taiwan[J].Geoscience and Remote Sensing Symposium,1995(3):2097-2099.
[12]Ryan T W,Semintilli P J,Yuen P,et al.Extraction of shoreline features by neural nets and image processing[J].Photogrammetry and Remote Sensing,1991,57(7):947-955.
[13]冯永玖,韩震.海岸线遥感信息提取的元胞自动机方法及其应用[J].中国图象图形学报,2012,17(3):441-446.Feng Y J,Han Z.Cellular automata approach to extract shoreline from remote sensing imageries and its application[J].Journal of Image and Graphics,2012,17(3):441-446.
[14]黄海军,李成治,郭建军.卫星影像在黄河三角洲岸线变化研究中的应用[J].海洋地质与第四纪地质,1994,14(2):29-37.Huang H J,Li C Z,Guo J J.Application of Landsat images to the studies of the shoreline changes of the Huanghe River delta[J].Marine Geology and Quaternary Geology,1994,14(2):29-37.
[15]马小峰,赵冬至,邢小罡,等.海岸线卫星遥感提取方法研究[J].海洋环境科学,2007,26(2):185-189.Ma X F,Zhao D Z,Xing X G,et al.Means of withdrawing coastline by remote sensing[J].Marine Environmental Science,2007,26(2):185-189.
[16]Laben.Process for enhancing the spatial resolution of multispectral imagery using pan-sharpening:US,6 011 875[P].2000-01-04.
[17]Zhang X K,Zhang X,Lan Q Q,et al.Automated detection of coastline using Landsat TM based on water index and edge detection methods[C]//Proceedings of the 2nd International Workshop on Earth Observation and Remote Sensing Applications,Shanghai,2012:153-156.
[18]Otsu N A.Threshold selection method from gray-level histogram[J].IEEE Transactions on Systems,Man,and Cybernetics,1979,9(1):62-66.
[19]徐涵秋.利用改进的归一化差异水体指数(MNDWI)提取水体信息的研究[J].遥感学报,2005,9(5):589-595.Xu H Q.A study on information extraction of water body with the modified normalized difference water index(MNDWI)[J].Journal of Remote Sensing,2005,9(5):589-595.
[20]王李娟,牛铮,赵德刚,等.基于ETM遥感影像的海岸线提取与验证研究[J].遥感技术与应用,2010,25(2):235-239.Wang L J,Niu Z,Zhao D G,et al.The study of coastline extraction and validation using ETM remote sensing image[J].Remote Sensing Technology and Application,2010,25(2):235-239.
[21]张明.基于小波分析的淤泥质潮滩水边线提取[D].上海:华东师范大学,2008.Zhang M.Waterline extraction of muddy coast based on wavelet analysis[D].Shanghai:East China Normal University,2008.