Detection of identity changes during facial recognition enrollment process

A method, comprising:

• capturing a first set of images using a camera located on a device, the device comprising a computer processor and a memory, wherein the first set of images comprises one or more images captured while illuminating a face of a first subject in the images with infrared illumination from a projector located on the device, the first set of images being captured during a facial recognition enrollment authorization process;
• encoding the first set of images to generate first feature vectors defining features of the first subject in the first set of images in a feature space;
• capturing a second set of images using the camera located on the device, wherein the second set of images comprises one or more images captured while illuminating a face of a second subject in the images with the infrared illumination from the projector located on the device, the second set of images being captured during the facial recognition enrollment authorization process;
• encoding images in the second set of images as the images in the second set of images are captured, wherein encoding the images in the second set of images generates second feature vectors defining features of the second subject in the feature space;
• comparing at least some of the second feature vectors to one or more of the first feature vectors;
• and
• determining during the facial recognition enrollment authorization process, whether the second subject is a different subject from the first subject based on the comparison of at least some of the second feature vectors to one or more of the first feature vectors.

A device, comprising:

• a camera;
• at least one illuminator providing infrared illumination;
• circuitry coupled to the camera and the illuminator, wherein the circuitry is configured to:
• capture a first image using the camera, wherein the first image comprises an image captured while illuminating a subject in the image with infrared illumination from the at least one illuminator, the first image being captured during a facial recognition enrollment authorization process;
• determine whether the subject in the first image is a different subject than a reference subject from one or more images captured during the facial recognition enrollment authorization process prior to the first image being captured;
• in response to the subject in the first image being determined to be different than the reference subject, capture one or more second images using the camera;
• determine whether a subject in the second images is the same subject as the subject in the first image;
• and
• restart the facial recognition enrollment authorization process in response to the subject in the second images being determined to be the same subject as the subject in the first image.