Aircraft skin damage identification method and device based on image and ultrasound information fusion

The invention discloses an aircraft skin damage identification method based on image and ultrasound information fusion, belonging to the technical field of structural health monitoring. The method comprises the following steps of: firstly, acquiring an image and an ultrasonic echo signal of an aircraft skin with known types of damages; extracting textural features and ultrasonic echo features of the image; training a classifier in a mode that a feature vector composed of the textural features and the ultrasonic echo features of the image is used as the input and the damage types are used as the outputs; respectively acquiring the image and the ultrasonic echo signal of the aircraft skin to be identified; extracting the textural features and the ultrasonic echo features of the image; and subsequently inputting the feature vector composed of the textural features and the ultrasonic echo features of the image into the trained classifier, and then the output of the classifier is the type of the damage of the aircraft skin to be identified. The invention further discloses an aircraft skin damage identification method based on image and ultrasound information fusion. With the adoption of the method and the device, the discrimination and the accuracy in the detection to the damages of the aircraft skin are remarkably improved.