IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD FOR PERFORMING FACIAL AUTHENTICATION

An image processing apparatus includes a first acquisition unit configured to acquire a first feature amount from a first image based on a first trained model configured to extract a feature from an image, a second acquisition unit configured to acquire a second feature amount from a second image based on a second trained model determined based on a state of the second image and configured to extract a feature from an image, and a verification unit configured to determine, based on the first feature amount and the second feature amount, whether an object in the first image and an object in the second image are the same. The second trained model is a model having learned the second feature amount in a same feature space as that for the first trained model.