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。
A new approach for road centerline semi-automatic extraction from aerial images is proposed.
摘要：提出了一种融合像元-多尺度物件级特征的高解析度遥感影像道路中心线提取方法。
Abstract: a novel approach for road centerline extraction from high spatial resolution satellite imagery is proposed by fusing both pixel-based and object-based features.
摘要：道路几何线形是由直线与曲线连接而成的空间立体线形形状，也就是道路中心线的空间描绘。
Abstract: : the road geometry is are connected by a straight line and curve of a three-dimensional linear shape, also is the center line of the road space.
最后，结合本文所提出的非道路区域自动去除演算法和张量投票演算法，实现道路中心线的精提取。
Finally, an automatic noise removing algorithm combined with the tensor voting strategy is presented to accurately extract the road centerline.
在没有中心线的道路上超车时，应开启左转向灯，从被超车左侧超越。
When overtaking on a road without a Central Line, the driver should turn on the left-turn signal and overtake from the left side of the vehicle to be overtaken.
路径跟踪是实现地下铲运机自动化作业的基本任务之一，一般在规划要求跟踪的路径时以巷道路面中心线为期望路径。
Tracking path is one of basic task for the LHD unit auto-drive, sometime midline of tunnel is considered as the LHD's expectation path.
据此对小半径曲线加宽、横向超高及中心线设计中可能存在的安全问题进行了研究，提出了相对山区公路小半径曲线的道路安全设计建议。
Hereby this paper researches the likely issue in curve widen, horizontal slope and center traffic line, and presents correspond advice of road safe design.
目前，基于路段中心线的二维道路网络模型已经普遍存在，但其在几何特征及拓扑关系表达等方面都难以满足复杂交通系统的需求。
The information of centerlines can not cover the changes of lanes, and the two-dimensional model is also inadequate in the expression of three-dimensional transportation networks.
利用拟合的分布控制行程时间的中心线、上下限，从而对行程时间的可接受极限值进行界定，对道路网行程质量进行控制。
The range of acceptable traveltime can be obtained through the center, upper and lower bounds controlled by fitting distribution in quality control.
研究表明，车辆在有边缘线的道路上行驶比在仅有中心线或无标线的道路上行驶时更居中，尤其是在晚间行车时。
The results show that vehicles on edge lined roads drive more to the roads' center than vehicles on axis lined or unlined roads, especially in darkness. The edge lines enable more precise steering.
研究表明，车辆在有边缘线的道路上行驶比在仅有中心线或无标线的道路上行驶时更居中，尤其是在晚间行车时。
The results show that vehicles on edge lined roads drive more to the roads' center than vehicles on axis lined or unlined roads, especially in darkness. The edge lines enable more precise steering.
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