Facial image identification system, identifier generation device, identification device, image identification system, and identification system

Abstract

A facial image identification system is provided to calculate a first feature amount related to each of features from first facial image data used in machine learning for constructing a first identifier that identifies the features of a face, calculate a second feature amount related to each feature from second facial image data obtained in the environment using the first identifier, and compare the first and the second feature amounts for each feature. The system extracts a feature having a large difference between the first and the second feature amounts as a difference feature, and constructs, by implementing machine learning that third facial image data is used, a second identifier for identifying the difference feature and/or a difference-related feature. The third facial image data is acquired in the environment that uses the first identifier and reflects the difference feature and/or the difference-related feature in the third facial image data.