A fast and effective approach to generate true orthophoto in built‐up area
A fast and effective approach to generate true orthophoto in built‐up area
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DOI：
10.1108/02602281111169758
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发表时间：
2011-09
期刊：
影响因子：
1.6
通讯作者：
Cheng Zhong;Hui Li;Xianfeng Huang
中科院分区：
文献类型：
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作者：
Cheng Zhong;Hui Li;Xianfeng Huang
目的 – 正射影像受到高分辨率成像传感器放大的地形位移效应的影响，尤其是在绘制城市地区地图时。提供了使用数字表面模型 (DSM) 消除地貌位移的真实正射影像，以确保可靠的可解释性并保持可用数据的高质量。以前的努力没有提供准确、快速的方法来生成真实的照片。本文的目的是尝试通过分析算法过程的复杂性并找到分配算法过程的最佳方式来解决该问题。设计/方法/途径——在本文中，提出了径向扫描的最佳分割数，以实现最小的复杂性。首先用严格的几何理论讨论了径向扫描和螺旋扫描方法的扫描面积、方位线数量和能见度判断区域，然后用数学计算理论估计了两种方法的算法复杂度。最后，方法的最小复杂性...
Purpose – Orthophoto suffers from the relief displacement effects magnified by high resolution imaging sensors especially when mapping urban areas. True orthophotos eliminating relief displacement with digital surface model (DSM) are presented to assure reliable interpretability and maintain the high quality of the available data. Previous efforts did not provide accurate and fast ways for generating true othorphoto. The purpose of this paper is to try to solve the problem by analyzing the complexity of algorithm processes and finding the optimum manner to allocate them.Design/methodology/approach – In this paper, an optimum segmentation number for radial sweep is presented to achieve minimum complexity. First, the scan area, number of azimuth lines and visibility judgment area of radial sweep and spiral sweep method have been discussed with rigorous geometric theory, and then algorithm complexities of both methods are estimated with mathematical computation theory. Finally, minimum complexity of the meth...