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结合海岸类型和潮位校正的海岸线遥感提取

DOI: 10.6046/gtzyyg.2013.04.15, PP. 91-97

Keywords: 海岸线提取,遥感,海岸类型,潮位校正

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Abstract:

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。

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