FACIAL EXPRESSION RECOGNITION METHOD, FACIAL EXPRESSION RECOGNITION APPARATUS, COMPUTER PROGRAM, AND ADVERTISEMENT MANAGEMENT SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve accuracy of facial expression recognition using hierarchical neural network.;SOLUTION: A facial expression recognition method according to one aspect of the present invention is a method for recognizing facial expressions included in a photographed image. The method includes a learning step of causing a hierarchical neural network to learn parameters based on input data of a learning image group having features relating to at least facial ruggedness information (angle A), texture information (gradient G), and contour information (contour E), and a recognition step of extracting features relating to at least the three types of information from the photographed image to generate a plurality of input images and causing the hierarchical neural network that has learned the facial expressions included in the photographed image to recognize the generated plurality of input images as input data.;SELECTED DRAWING: Figure 6;COPYRIGHT: (C)2018,JPO&INPIT