基于直线提取的机场跑道识别方法

针对红外机场跑道图像的结构特点，提出了一种机场跑道识别和提取跑道中心点的算法。首先对红外图像进行空域滤波；然后采用Sobel算子提取边缘图像；接着提取所有可能的直线段，并计算它们的参数；接着对找到的直线段进行连接性测试，得到最终的直线提取结果；最后从找到的所有直线中搜索平行直线对，从中识别出机场主跑道的边缘，计算出跑道中心点。大量的仿真实验证明这种方法可以红外图像中准确、快速地识别出机场跑道和提取跑道中心点。

Automatic Airfield Runway Recognition Algorithm Based on Line Extraction

Aiming for the structure feature of the airfield runway,a new airfield runway recognition and center spot extraction algorithm is proposed.Firstly,median filter is used to remove pulse noise.Secondly,the edge image is extracted with sobel operator.Thirdly,all possible line sect are extracted and their parameters are calculated.Fourthly,line extraction result are got by implementing line sect connect test.Finally,parallel lines are searched from all lines,and edges of main runway are recognised,and center spot of runway are calculated.Many experiments show that this method can recognize airfield runway and extract center spot exactly and quickly in the infrared images.