| 利用LiDAR数据提取山谷(脊)线的关键技术研究 |
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| 引用本文： | 王宗跃,马洪超,彭检贵.利用LiDAR数据提取山谷(脊)线的关键技术研究[J].山东科技大学学报(自然科学版),2010,29(6). |
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| 作者姓名： | 王宗跃 马洪超 彭检贵 |
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| 作者单位： | 集美大学计算机工程学院;武汉大学遥感信息工程学院; |
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| 基金项目： | 国家重点基础研究发展计划("973"计划)项目，福建省教育厅项目，集美大学科研基金项目 |
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| 摘 要： | 在分析利用LiDAR数据提取山谷(脊)线关键步骤的基础上,针对传统三维流水模拟方法采用单一汇水量阈值提取山谷(脊)线所存在的无法提取既完整又可靠的山谷(脊)线的局限,提出了动态设定汇水量阈值的模型。在实验中,采用正交测试法对动态阈值模型的参数取值进行测试,得到了较合理参数值,实验结果表明,采用动态阈值能够提取更准确的山谷(脊)线。
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| 关 键 词： | 机载激光雷达 山谷线 水文分析 地形特征 |
Research on Key Technologies of Extracting Valley and Ridge Lines with LiDAR Data |
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| WANG Zong-yue,MA Hong-chao,PENG Jian-gui.Research on Key Technologies of Extracting Valley and Ridge Lines with LiDAR Data[J].Journal of Shandong Univ of Sci and Technol: Nat Sci,2010,29(6). |
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| Authors: | WANG Zong-yue MA Hong-chao PENG Jian-gui |
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| Institution: | WANG Zong-yue1,2,MA Hong-chao2,PENG Jian-gui2(1.School of Computer Engineering,Jimei University,Xiamen,Fujian 361021,China,2.School of Remote Sensing and Information Engineering,Wuhan University,Wuhan,Hubei 430079,China) |
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| Abstract: | After the key steps of extracting valley(or ridge) lines by analyzing and using LiDAR data,a model of catchment threshold value set up dynamically was proposed according to some limitations existed in traditional 3 D running water simulation in which the complete and highly reliable valley(or ridge) lines could not be extracted with single catchment threshold value.A group of reasonable parameter values of dynamic threshold model were obtained by orthogonal test method.The experiment results show that more ... |
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| Keywords: | airborne LiDAR valley lines hydrological analysis topographic feature |
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