Domain adaption

A computer-aided method of training a neural network to transfer mammography images between domains, the neural network operable to perform the steps of:

• receiving a plurality of mammogram images in a first domain where the first domain is a first vendor image style;
• receiving a plurality of mammogram images in a second domain wherein the second domain is a second vendor image style;
• determining a first network to transfer one or more of the plurality of mammogram images in a first domain to a second domain to output transferred second domain images;
• determining a second network to transfer one or more of the plurality of mammogram images in a second domain to a first domain to output transferred first domain images;
• and
• determining a discriminator network to output labels for each input image, the labels comprising being in the first domain, being in the second domain, being the transferred first images or being the transferred second images;
• wherein the training of the neural network is performed by optimising a sum of losses.