基于图像信息的飞机蒙皮裂纹检测

he pressure and decompression process aircraft endure may cause their skins to inflate and deflate. The resulting strain drives the growth of the initially micro cracks. In order to find the crack before it grow up to the critical crack length, we use the magneto-optic image of the aircraft skin for completing the detection procedure to avoid the crack losing stability and leading to an accident. Median filter and binary operation are used to eliminate the noise interference such as serpentine texture, and inhomogeneous illumination, etc. Hough method can be used after morphological operation to extract the rivet center and radius. Then, the crack parameters can be determined. Experimental results show that the method can effectively provide crack parameters for comprehensive crack damage severity evaluation.