Abstract: An authentication system includes: a first imaging device that images an individual object in a first stage to generate a registration image; a second imaging device that images an individual object to be authenticated in the second stage to generate an authentication image; and a registration device configured to authenticate the individual object to be authenticated, by extracting a registration partial image from the registration image with use of a registration template to acquire registration image information, extracting an authentication partial image from the authentication image with use of an authentication template to acquire authentication image information, and determining whether the authentication image information and the registration image information represent a same individual object, the authentication template corresponding to the registration template, and having, with respect to the registration template, a difference in accordance with a treatment/processing.

Abstract: An individual object identification system includes: an image acquisition processor configured to perform an image acquisition process to acquire an image of a subject acquired using imaging equipment; a feature point extraction processor that extracts a feature point from the image; a local feature amount calculation processor that calculates a local feature amount of the feature point; a local feature amount group classification processor that performs classification into a predetermined number of local feature amount groups; a global feature amount calculation processor that calculates a global feature amount based on each of the local feature amount groups; a searching target image registration processor that registers a plurality of images that are searching targets; a global feature amount registration processor that registers the global feature amount related to each of the registered images in a global feature amount registration unit; a narrowing processor that narrows down the plurality of registere