A DECODER TRAINING METHOD, A HIGH-RESOLUTION FACE IMAGE GENERATION METHOD, A DEVICE AND A COMPUTER DEVICE

The invention provides a decoder training method which comprises the steps of acquiring a first face image which is a low-resolution face image with resolution that is lower than a first preset value;coding the first face image by a decoder, and forming a high-dimension vector which corresponds with a first face image characteristic, and the dimension of the high-dimension vector is higher than asecond preset value; generating a second face image by a generator according to the high-dimension vector, and the second face image is a high-resolution face image with resolution which is higher than a third preset value; determining the value of a loss function according to the second face image, and adjusting the decoder parameter according to the value of the loss function; and when the value of the loss function satisfies a preset condition, obtaining the trained decoder. According to the method, after the high-dimension vector which is output by the decoder according to the obtained low-resolution face image is input into the generator, the high-resolution face image which approaches the low-resolution face image can be generated.