The application discloses a document tampering detection method, device and equipment for network document
content security. The method comprises the following steps: generating a background amplitude domain component, a background
phase domain component, a text amplitude domain component and a text
phase domain component according to an initial document image; adding a prompt word to each component respectively, and generating a target document image according to each component after adding the prompt word; training a pre-training model by taking the target document image as a training image to obtain a document tampering detection model, and performing document tampering detection by using the document tampering detection model. According to the technical scheme, the
background image and the text image of the initial document image are processed by adding prompt words to each component in the
frequency domain respectively to obtain a target document image, the model is trained by using the target document image, the document tampering detection model is obtained, and the document tampering detection is performed, so that the generalization performance of the document tampering detection method for network document
content security is improved.