Abstract: A device and method for performing a user identification of a user include acquiring a first image of the user. A second image of the user that is associated with a previous user identification of the user is selected. The first image and the second image are compared, and a user identification is performed based on the comparison of the first image the second image.

Abstract: An apparatus obtains a first image including a plurality of body regions captured at a first time by one or more cameras, each of the plurality of body regions corresponding to a person, among a plurality of persons; detects a first person, among the plurality of persons, by performing facial recognition operation on one of the plurality of body regions in the image obtained from the camera; determines, based on a size of a first body region corresponding to the first person captured in a second image, that the first body region approaching the barrier corresponds to a person closest to the barrier among the plurality of persons; and outputs information to control the barrier to open based on the determination that the first body region corresponds to the person closest to the barrier among the plurality of persons.

Abstract: A gate apparatus includes a memory storing one or more instructions; and a processor configured to execute the one or more instructions to: obtain an image including a plurality of persons captured by one or more cameras, each of the plurality of persons present at a first area in advance of a barrier, process the image to determine whether each of the plurality of persons at the first area is authorized to proceed through the barrier and control the barrier, based on a status that the plurality of persons are identified as being authorized or unauthorized.

Abstract: An apparatus includes a memory storing one or more instructions; and a processor configured to execute the one or more instructions to: obtain a first image including one or more faces captured at a first time by one or more cameras, each of the one or more faces corresponding to a person, among one or more persons; detect a first person, among the one or more persons, by performing facial recognition operation on the one or more faces in the image obtained from the camera; detect a body region corresponding to a face region of the first person; track the body region in a second image captured by the one or more cameras at a second time subsequent to the first time; and output information to control a bather to open based on a determination that the body region is approaching the barrier.