Method and system of inspecting vehicle

A system of inspecting a vehicle, comprising:

• a display device,
• an image processor, and
• a storage device coupled with the image processor and storing computer-readable instructions, wherein the computer-readable instructions, when executed by the image processor, cause the image processor to:
• perform X-ray scanning on an inspected vehicle to obtain an X-ray image of the inspected vehicle;
• preprocess the X-ray image and perform a linear transformation on the preprocessed X-ray image to obtain a to-be-inspected image of the inspected vehicle;
• acquire a visual feature of the to-be-inspected image using a first neural network model;
• retrieve a template image from a vehicle template library based on the visual feature of the to-be-inspected image;
• determine a variation region between the to-be-inspected image and the template image;
• mark a contour of the variation region with a color line on the to-be-inspected image according to data of the variation region, so as to prompt a position of a detected suspect in the inspected vehicle;
• and
• present the to-be-inspected image with the position of the detected suspect in the inspected vehicle being prompted,
• wherein the computer-readable instructions, when executed by the image processor, further cause the image processor to:
• register the to-be-inspected image with the template image;
• extract feature maps of the registered to-be-inspected image and the registered template image;
• and determine a difference between the feature maps of the to-be-inspected image and the template image,
• wherein the feature maps of the to-be-inspected image and the template image are extracted using a second neural network model.