| 航空影像上道路中心线的半自动提取算法研究 |
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| 引用本文： | 李齐,郭丙轩,董玲燕,张志超.航空影像上道路中心线的半自动提取算法研究[J].测绘信息与工程,2009,34(1):23-25. |
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| 作者姓名： | 李齐 郭丙轩 董玲燕 张志超 |
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| 作者单位： | 武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079 |
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| 摘 要： | 提出了一种新的从航空影像上提取道路中心线的半自动方法。该方法利用道路地物的几何特征和辐射特征，根据用户提供的少量道路种子点，利用自适应灰度模板对道路中心线上的每个点进行调整，最后采用最小二乘算法和牛顿迭代法对调整后的道路中心线上的每个点进行拟合，以此获得趋近于道路中心线的最佳折线。试验结果证明，该算法简单易行、效率较高．具有较好的鲁棒性和实用性。
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| 关 键 词： | 道路中心线提取 自适应灰度模板 中心线调整 最小二乘算法 牛顿迭代法 |
ON SEMI-AUTOMATIC ROAD CENTERLINE EXTRACTION FROM AERIAL IMAGES——BASED ON LEAST SQUARE METHOD AND NEWTON ITERATION METHOD |
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| LI Qi,GUO Bingxuan,DONG Lingyan,ZHANG Zhichao.ON SEMI-AUTOMATIC ROAD CENTERLINE EXTRACTION FROM AERIAL IMAGES——BASED ON LEAST SQUARE METHOD AND NEWTON ITERATION METHOD[J].Journal of Geomatics,2009,34(1):23-25. |
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| Authors: | LI Qi GUO Bingxuan DONG Lingyan ZHANG Zhichao |
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| Institution: | (State Key Laboratory for Information Engineering in Surveying Mapping and Remote Sensing, 129 Luoyu Road, Wuhan 430079, China) |
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| Abstract: | A new approach for road centerline semi-automatic extraction from aerial images is proposed. This approach uses the geometric features and radiation features of the road, according to the small amount seed points given by the user, each point in the road centerline can be gotten. Then an adaptive gray template is used to adjust each point in the road centerline. Finally, least square method and Newton iteration method are adapted to each point in the road centerline to fit a polygonal line. Experimental results show that this algorithm is simple and effective, also have good robustness and practicality. |
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| Keywords: | road centerline extraction adaptive gray template centerline adjustment least square method Newton iteration method |
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