Method and apparatus for training a three-dimensional face reconstruction model and method and apparatus for generating a three-dimensional face image

An electronic device, comprising:

• at least one processor;
• and
• a memory communicatively connected to the at least one processor,
• wherein the memory stores an instruction executable by the at least one processor, and the instruction is executed by the at least one processor to cause the at least one processor to execute the following steps:
• acquiring a sample face image and a stylized face map of the sample face image;
• inputting the sample face image into a three-dimensional face reconstruction model to obtain a coordinate transformation parameter and a face parameter of the sample face image;
• determining a three-dimensional stylized face image of the sample face image according to the face parameter of the sample face image and the stylized face map of the sample face image;
• transforming the three-dimensional stylized face image of the sample face image into a camera coordinate system based on the coordinate transformation parameter, and rendering the transformed three-dimensional stylized face image to obtain a rendered map;
• and
• training the three-dimensional face reconstruction model according to the rendered map and the stylized face map of the sample face image.

A non-transitory computer-readable storage medium storing a computer instruction, wherein the computer instruction is configured to cause a computer to execute the following steps:

• acquiring a sample face image and a stylized face map of the sample face image;
• inputting the sample face image into a three-dimensional face reconstruction model to obtain a coordinate transformation parameter and a face parameter of the sample face image;
• determining a three-dimensional stylized face image of the sample face image according to the face parameter of the sample face image and the stylized face map of the sample face image;
• transforming the three-dimensional stylized face image of the sample face image into a camera coordinate system based on the coordinate transformation parameter, and rendering the transformed three-dimensional stylized face image to obtain a rendered map;
• and
• training the three-dimensional face reconstruction model according to the rendered map and the stylized face map of the sample face image.