Access control apparatus and method using facial recognition

An access control apparatus comprising:

• a memory storing one or more instructions;
• and
• a processor configured to execute one or more instructions to perform operations comprising:
• detecting at least one face area in an image of an entrance area,
• calculating a plurality of recognition scores, each indicating a recognition degree for a corresponding one of a plurality of main landmarks within the at least one face area,
• determining a plurality of face attribute factors in the at least one face area,
• extracting, by searching a face attribute lookup table, (i) a plurality of occlusion weights of the plurality of face attribute factors, each occlusion weight indicating a degree to which a corresponding face attribute factor contributes to face occlusion and (ii) face area information corresponding to each face attribute factor,
• calculating a face occlusion score of the at least one face area based on the plurality of recognition scores of the plurality of main landmarks, the plurality of occlusion weights of the plurality of face attribute factors, and the face area information,
• determining, based on the face occlusion score of the at least one face area, whether face recognition can be performed for the at least one face area,
• identifying, from among the at least one face area deemed suitable for the face recognition, a user corresponding to a first face area, and
• notifying, based on the identification of the user being failed, an image of the first face area and a user identification failure.