| 基于DSM点云纠正的正射影像房屋边缘锯齿消除 |
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| 引用本文： | 陈良浩,朱彩英,郭连惠,蓝朝桢.基于DSM点云纠正的正射影像房屋边缘锯齿消除[J].测绘科学技术学报,2017,34(3). |
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| 作者姓名： | 陈良浩 朱彩英 郭连惠 蓝朝桢 |
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| 作者单位： | 1. 信息工程大学,河南郑州450001;昆山数字城市信息技术有限公司,江苏昆山215300;2. 昆山数字城市信息技术有限公司,江苏昆山,215300;3. 61618部队,北京,102102;4. 信息工程大学,河南郑州,450001 |
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| 摘 要： | 当前无人机低空航空摄影测量生成的数字正射影像DOM中,房屋边缘大量存在锯齿失真的现象,严重影响了对影像建筑物的判读和提取,降低了无人机航测数字正射影像的使用效益。提出一种利用数字表面模型DSM点云数据,提取其房屋边缘,并进行规则化处理,然后在此基础上进行数字微分纠正,生成正射影像的方法。实验结果表明,利用该方法可有效防止数字正射影像中房屋边缘存在的锯齿失真现象。
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| 关 键 词： | 数字正射影像 房屋边缘 锯齿 无人机 数字表面模型 |
Removing Aliasing Effects of House Edge in DOM Based on the Correction of DSM |
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| CHEN Lianghao,ZHU Caiying,GUO Lianhui,LAN Chaozhen.Removing Aliasing Effects of House Edge in DOM Based on the Correction of DSM[J].Journal of Zhengzhou Institute of Surveying and Mapping,2017,34(3). |
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| Authors: | CHEN Lianghao ZHU Caiying GUO Lianhui LAN Chaozhen |
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| Abstract: | Currently,the phenomenon of the house edge aliasing and distortion existing in DOM,which is generated by the low altitude aerial photogrammetry,seriously affects the interpretation and extraction of buildings from DOM,and reduces the using efficiency of DOM.Aiming at solving this problem,a method which is proposed,extracts its house edge based on DSM and rules the edge,and then generates DOM by digital differential rectification.The result of experiment shows that the method can effectively prevent house edge aliasing and distortion of DOM. |
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| Keywords: | DOM house edge aliasing UAV DSM |
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