关键词: 边缘检测, Hough变换, 机场识别

Abstract: As one of the problems in the pattern recognition domain, the airport recognition has a significant application prospect in the military affairs. It contains two aspects：identification of airport and localization of runway. A new method to solve the problem of airport recognition is presented. The method of threshold value division is applied to the image, and the pixels marking method is used to extract the maximum cross-connection domain as possible airport area（ROI）, then Canny operator is used to extract the edge of the image. By using an improved Hough transform method, straight line can be precisely extracted from the edge image and locate the airport runway.

Key words: edge detection, Hough transform, airport recognition