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- 2017
直角点特征引导的遥感影像居民地提取方法
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Abstract:
提出了一种基于直角点统计特征的高分辨率遥感全色图像居民地提取方法。首先，分别检测全色图像中的直角点、直线段；然后，利用直角点邻边的长度约束进一步优化直角点；接着，通过构建直角点缓冲区投影的方式生成特征图像；最后，二值化特征图像提取居民地信息。实验结果表明，与角点、直线以及未限制邻边长度直角点的统计特征对比，邻边长度约束的直角点统计特征更能反映居民地信息，有效克服了同样具有较多角点与直线特征的道路、车辆、农田田埂等地物对居民地提取的负面影响。与已有的PanTex指数方法相比，所提方法不依赖于纹理的复杂程度，有效削弱了纹理复杂的非居民地区域对居民地提取的负面影响
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