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Expression recognition method and device

A technology of facial expression recognition and recognition method, which is applied in the field of facial expression recognition method and device, can solve the problems of poor facial expression decoding effect and low accuracy rate of facial expression recognition, and achieve the effect of improving the accuracy rate

Active Publication Date: 2019-11-15
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

[0004] This application provides an expression recognition method and device, which are used to solve the problems of poor decoding effect of facial expressions and low accuracy of facial expression recognition

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  • Expression recognition method and device

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Embodiment Construction

[0073] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0074] figure 1 It is a flow chart of the facial expression recognition method provided in Embodiment 1 of the present application. The expression recognition method provided in this embodiment may be executed by an expression recognition device. like figure 1 As shown, the facial expression recognition method provided in this embodiment may includ...

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Abstract

The invention provides an expression recognition method and device. The expression recognition method comprises the steps: obtaining a brain signal of a to-be-detected person when the to-be-detected person observes an expression, inputting the brain signal to an expression recognition model comprising a plurality of classifiers, and determining the expression corresponding to the to-be-detected brain signal according to the output results of the plurality of classifiers. A plurality of classifiers in the expression recognition model consider the cognitive mechanism of the brain to different facial expressions, so that the expression recognition model has a hierarchical distribution structure for describing brain signals corresponding to different facial expressions, and the expressions corresponding to the to-be-detected brain signals can be more reasonably determined through the expression recognition model, and the facial expression recognition accuracy is improved.

Description

technical field [0001] The present application relates to the technical field of data processing, and in particular to an expression recognition method and device. Background technique [0002] Decoding visual perception from brain neural signals is a frontier field that has attracted much attention internationally. This technology combines machine learning-related methods to obtain information about objects observed by subjects by analyzing functional Magnetic Resonance Imaging (fMRI) signals collected from subjects. [0003] At present, there are many technologies for analyzing the facial expressions observed by subjects based on fMRI signals of subjects. However, these techniques do not take into account the differences in the brain's cognitive model structure for different facial expressions, resulting in the distortion of facial expressions. The decoding effect is poor, and the accuracy of facial expression recognition is low. Contents of the invention [0004] The ...

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Application Information

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IPC IPC(8): G06K9/00G06K9/62
CPCG06V40/174G06V40/172G06F18/2431G06F18/214
Inventor 张慧魏子翔
Owner BEIHANG UNIV