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基于QuickBird影像的城市高大地物阴影检测方法

DOI: 10.6046/gtzyyg.2015.02.08, PP. 51-55

Keywords: QuickBird影像,主成分变换,阴影检测,形态学滤波

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Abstract:

针对利用高分辨率遥感影像检测阴影时受水体和偏蓝色地物影像的影响问题,提出了一种主成分变换和多波段运算相结合的阴影检测方法。首先,统计、分析了QuickBird影像中阴影、水体及建筑物等典型地物的光谱特征;然后,基于主成分变换和多波段运算相结合的方法识别阴影区域和非阴影区域,并利用多峰直方图阈值算法对阴影进行自动检测;最后,利用形态学滤波算法对检测结果进行后处理。实验结果表明,该方法对QuickBird影像中的阴影提取具有较高的精度、效率和普适性。

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