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直线是城区中道路、建筑物以及机场等人工环境下的主要特征,进行直线的提取具有很强的实际意义。首先针对影像建立高斯滤波模型去噪,然后进行边缘检测,在边缘影像上进行Hough变换,通过端点检测的方法来获取直线。试验对比结果表明,该算法可以在航空影像和遥感影像中提取出真实的地物直线。
Straight lines are the main characteristics of the artificial environment of roads, buildings and airports in urban areas. It is of great practical significance to carry out straight line extraction. Firstly, a Gaussian filter model is established for image denoising, and then the edge detection is performed. Hough transform is performed on the edge image, and the straight line is obtained by endpoint detection. The experimental results show that this algorithm can extract the true feature line from aerial image and remote sensing image.