Multimedia face changing method and device

The invention provides a multimedia face changing method and device. Relates to the technical field of computer vision. Encoding the image providing the identity and the image providing the attribute by using an encoder based on a pyramid structure to obtain identity information and attribute information; combining the identity information and the attribute information into a new potential code by using a multi-scale adaptive identity mapping network; obtaining a generated image based on the new potential code and a pre-trained generator; respectively encoding the generated image and the image providing the attributes by using the encoder to obtain a high-level potential code, a middle-level potential code and a low-level potential code; according to the characteristics of the potential codes of all the parts, the low-level potential codes of the generated image and the image providing the attributes are exchanged, then the generator is used for decoding, and the generated image subjected to secondary coding