It should be noted that, in step 24, if the vehicle information cannot be extracted based on the vehicle image, the method may further include the steps of:

processing the vehicle image by sharpening to meet the extraction requirement, and extracting vehicle information from the processed vehicle image. Specifically, the image processor 4 sharpens the vehicle image.

It should be noted that step 24 may be performed immediately after finishing step 22. Step 25 may be performed when it is determined that the vehicle information contained in the vehicle image is not consistent with the standard vehicle information in the vehicle image information base, or be performed immediately after finishing step 22, i.e., directly determining whether the license plate of the vehicle is tampered.

It should be understood that the above embodiments are merely exemplary embodiments for the purpose of illustrating the principle of the disclosure, and the disclosure is not limited thereto. Various modifications and improvements can be made by a person having ordinary skill in the art without departing from the spirit and essence of the disclosure. Accordingly, all of the modifications and improvements also fall into the protection scope of the disclosure.