Use of colour transformation and the geodesic method for road centreline extraction from VHR satellite images

Use of colour transformation and the geodesic method for road centreline extraction from VHR satellite images
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使用颜色变换和测地线方法从 VHR 卫星图像中提取道路中心线

DOI:
10.1080/01431161.2018.1558374
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发表时间:
2019-01
影响因子:
3.4
通讯作者:
Li Jia
Li Jia
中科院分区:
工程技术3区
文献类型:
--
作者:
Miao Zelang;Gao Lipeng;He Yueguang;Wu Lixin;Shi Wenzhong;Samat Alim;Liu Sicong;Li Jia

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摘要基于种子点的道路提取方法是从卫星影像中提取道路网的关键。尽管它的有效性,道路在甚高分辨率(VHR)卫星图像是复杂的,如道路闭塞和材料的变化。为了解决这个问题,本文提出了使用颜色空间变换和测地线方法。首先,将测试图像从红绿蓝颜色空间转换到色调饱和度值颜色空间,以减少材料变化的影响。随后应用测地线方法来提取连接用户提供的道路种子点的初始道路段。最后,利用核密度估计方法对初始结果进行调整,生成中心道路。所提出的方法进行了定量评估的三个测试图像。实验表明,该方法产生了实质性的改进,尖端技术。这项研究的结果为从卫星图像中提取道路提供了一种实用的解决方案。
ABSTRACT Seed point-based road extraction methods are vital for extracting road networks from satellite images. Despite its effectiveness, roads in very high-resolution (VHR) satellite images are complicated, such as road occlusion and material change. To tackle this issue, this paper proposes to use the colour space transformation and geodesic method. First, the test image is converted from Red-Green-Blue colour space to Hue-Saturation-Value colour space to reduce the material change influence. The geodesic method is subsequently applied to extract initial road segments that link road seed points provided by users. At last, the initial result is adjusted by a kernel density estimation method to produce centred roads. The presented method is quantitatively evaluated on three test images. Experiments show that the proposed method yields a substantial improvement over cutting-edge technologies. The findings in this study shine new light on a practical solution for road extraction from satellite images.
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