多源多时相遥感数据面向对象海岛识别方法探讨
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摘要
遥感技术在新一轮全国海岛调查中得到广泛而深入的应用。针对目视解译方法的不足,采用面向对象的自动分类方法实施海岛专题信息提取。对多源多级遥感图像数据和多时相高分辨率光学图像数据,分别采取了不同的小目标识别与伪信息剔除策略。实验结果表明,不论融合高分辨率雷达图像数据与多光谱光学图像数据,还是直接利用多时相高分辨率光学图像数据,面向对象的自动分类方法均能够达到较高的海岛识别能力与识别精度。
Remote sensing technology has found a wide range of applications in the new round of national island investigation.On account of the deficiency of visual interpretation,the object-oriented approach was adopted in this paper to extract island thematic information.For multi-source,multi-resolution data and multi-temporal high resolution optical data,different strategies were adopted to detect small objects and eliminate false information.The experiment results show that the proposed methods give a fine performance in both recognition capability and recognition accuracy.
Remote sensing technology has found a wide range of applications in the new round of national island investigation.On account of the deficiency of visual interpretation,the object-oriented approach was adopted in this paper to extract island thematic information.For multi-source,multi-resolution data and multi-temporal high resolution optical data,different strategies were adopted to detect small objects and eliminate false information.The experiment results show that the proposed methods give a fine performance in both recognition capability and recognition accuracy.
引文
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[3]潘春梅,丁谦,曹文玉.南沙群岛岛礁地形地貌TM影像特征分析[J].国土资源遥感,2002(2):34-37.
[4]杨琦,邹乐君,沈晓华.浙江海域TM数据海岛信息识别提取[J].遥感信息,2003(2):36-37.
[5]陈凌云,胡自宁,黎广钊,等.遥感技术在广西海岛调查中的应用[J].国土资源遥感,2005(4):78-81.
[6]宋玮,张杰,姬光荣.基于SAR与TM图像的南沙双子群礁特征分析[J].海洋科学进展,2004,22(增刊):177-181.
[7]黄建波.中国海岛.沙洲.珊瑚礁遥感监测应用中的典型问题研究[D].青岛:中国海洋大学,2006.
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[9]Trivero P,Biamino W,Nirchio F.High Resolution COSMO-SkyMed SAR Images for Oil Spills Automatic Detection[A].Pro-ceedings of IGARSS 2007[C].Barcelona,2007.
[10]郭华东.汶川地震灾害遥感图集[M].北京:科学出版社,2008.
[11]Baatz M,Schape A.Multi-resolution Segmentation:An Optimi-zation Approach for High Quality Multi-scale Image Segmentation[A].Strobl J,Blaschke T,Griesebner G,et al.AngewandteGeographische Informations VerarbeitungⅫ[C].Heidelberg,2000.
[12]刘宝银,苏奋振.中国海岸带与海岛调查———原则方法系统[M].北京:海洋出版社,2005.
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