| 基于不同滤波算法差异的机载LiDAR数据桥梁提取 |
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| 引用本文： | 谷延超,范喆宇,范东明,林鉴.基于不同滤波算法差异的机载LiDAR数据桥梁提取[J].测绘工程,2014,23(11):67-70. |
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| 作者姓名： | 谷延超 范喆宇 范东明 林鉴 |
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| 作者单位： | 西南交通大学地球科学与环境工程学院,四川成都,611756 |
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| 基金项目： | 中央高校基本科研业务费专项资金项目 |
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| 摘 要： | 在对形态学滤波和区域生长算法研究的基础上,通过对桥梁的特点进行分析,提出一种基于形态学滤波和区域生长算法的滤波结果的差异进行桥梁探测的算法.算法不受桥梁形状的影响,桥梁可分叉、无需平行和等宽,甚至在部分桥梁数据不完整的情况下也有效.通过3个不同场景的桥梁实例验证算法的正确性.
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| 关 键 词： | 形态学滤波 区域生长 桥梁探测 机载LiDAR |
Extracting bridge from airborne LiDAR data based on the difference between diverse filtering methods |
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| GU Yan-chao,FAN Zhe-yu,FAN Dong-ming,LIN Jian.Extracting bridge from airborne LiDAR data based on the difference between diverse filtering methods[J].Engineering of Surveying and Mapping,2014,23(11):67-70. |
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| Authors: | GU Yan-chao FAN Zhe-yu FAN Dong-ming LIN Jian |
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| Institution: | (School of Geoscience and Environment Engineering, Southwest Jiaotong University, Chengdu 611756, China) |
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| Abstract: | Through the research on morphological filter and regional growing, a method of bridge extracting is proposed based on difference between above filtering methods. Combining the characteristics of bridges, the bridges can be extracted from the difference of filtered DEM. The proposed method is adaptable to different bridge designs. Therefore, bridges need not parallel edge or uniform width. Furthermore, a bridge can split into parts, and a bridge can be part of the whole bridge, etc. Three different bridges are conducted to demonstrate the efficiency of the proposed method. |
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| Keywords: | morphological filter regional growing bridge extracting airborne LiDAR |
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