Remote sensing image authenticity identification method and system

The invention discloses a remote sensing image authenticity identification method and system, and relates to the technical field of image processing, and the method comprises the steps: obtaining a remote sensing image, carrying out the image domain feature extraction processing of the remote sensing image based on an image domain encoder, and obtaining the image domain feature; performing frequency domain feature extraction processing on the remote sensing image based on a frequency domain encoder to obtain frequency domain features; performing preliminary fusion on the image domain features and the frequency domain features based on a multi-domain representation unified mapping module to obtain preliminary fusion features; optimizing the preliminary fusion feature based on a mixed domain feature optimization module to obtain a target fusion feature; and based on a linear classifier, carrying out authenticity identification processing on the remote sensing image by using the target fusion feature to obtain a