一种航空图像道路中心线快速提取算法

经典的航空图像道路中心线提取算法针对非实时应用，计算耗时长，难以满足视觉辅助导航、实时地物识别等应用的要求。在研究了图像中道路法向和等效道路宽度的基础上，建立了近似道路法向和等效道路宽度模型来代替经典道路模型，提出了基于道路中心线的快速提取方法。对比实验的结果说明：快速提取方法和经典方法取得了相近的道路提取效果，计算耗时大大下降，可以满足实时性要求。

A Fast Road Centerline Extraction Algorithm for Aerial Images

Aviation image road centerline extraction algorithm was based on the classical non real time applications, long time consuming, difficult to meet the application of visual aided navigation, real-time object recognition and other require- ments. Based on the image method and the equivalent width of the road to the road, a road approximating method and the equivalent width of road model had been set up instead of the classic road model, and a fast extraction method based on the road center line was put forward. The experimental results showed that it achieved similar about road extraction meth- od and classical method, but the computing time had been greatly reduced, it could meet the real-time requirements.