Use of Satellite Imagery for Establishing Road Horizontal Alignments
Use of Satellite Imagery for Establishing Road Horizontal Alignments
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DOI：
10.1061/(asce)0733-9453(2007)133:1(29
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发表时间：
2007-02
期刊：
影响因子：
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通讯作者：
S. Easa;Haibin Dong;Jonathan Li
中科院分区：
文献类型：
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作者：
S. Easa;Haibin Dong;Jonathan Li
从高分辨率卫星图像中生成快速和廉价的数字道路图和数据库对于各种应用来说正成为可能。提出了一种利用IKONOS 1 m空间分辨率影像建立道路平面线形的新方法。针对简单圆曲线和反圆曲线这两种类型的平曲线，提出了道路提取算法。该方法只需要两个和三个未知参数的简单和反向曲线，分别。与现有的圆检测方法不同，该方法在比图像尺寸小得多的区域内执行搜索过程，并实现更快的计算。导出的曲线参数表示到地理信息系统数据库中的有用输入。所开发的方法已经过测试，使用IKONOS图像的简单和反向曲线。结果表明，该方法在所有情况下都是收敛的，可用于精确建立道路平曲线。
Generating fast and inexpensive digital road maps and databases from high-resolution satellite imagery is becoming possible for various applications. This paper presents a new method for establishing road horizontal alignment using IKONOS 1 m spatial resolution imagery. Road extraction algorithms were developed for two types of horizontal curves: Simple circular curves and reverse circular curves. The method requires only two and three unknown parameters for simple and reverse curves, respectively. Unlike existing methods of circle detection, the proposed method performs the search procedures in a much smaller area than the image size and achieves faster computations. The derived curve parameters represent useful inputs into a geographic information system database. The developed method has been tested using IKONOS images for simple and reverse curves. The results show that the proposed method converges in all cases and can be used for accurately establishing road horizontal curves.