Method and device for facial expression recognition

A facial expression recognition and facial expression technology, applied in the field of facial expression recognition, can solve the problems of small image resolution, difficulty in detection, and limited application range of facial expression recognition, etc., achieve high expression recognition rate, improve accuracy The effect of high efficiency, strong ease of use and practicality

Active Publication Date: 2019-08-16
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0003] However, some existing facial expression recognition methods, such as IntraFace, mainly use geometry to extract facial feature points, and it is difficult to detect faces on images with occluded faces, low image resolution, or side faces. Therefore, the application range of facial expression recognition is limited.

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  • Method and device for facial expression recognition
  • Method and device for facial expression recognition
  • Method and device for facial expression recognition

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Embodiment Construction

[0020] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0021] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0022] see figure 1 , figure 1 The implementation flow of the method for recognizing facial expressions provided by the embodiment of the present invention is shown, and the method is applicable to various terminal devices, such as personal computers, tablet computers...

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Abstract

The invention is applicable to the technical field of machine learning, and provides a method and device for recognizing facial expressions. The method includes: acquiring a face image meeting preset conditions; detecting the positions of N feature points of the face in the face image, where N is an integer greater than zero; according to the detected N feature points position, select the eyes, nose and / or corners of the mouth as key feature points to calibrate the face image; perform facial expression recognition on the calibrated face image through the trained deep convolutional neural network, and output Recognition results. Through the present invention, the accuracy rate of human facial expression recognition can be effectively improved, and a higher expression recognition rate can be achieved even for human faces on images with many occlusions, low image resolution, or side faces.

Description

technical field [0001] The invention belongs to the technical field of machine learning, in particular to a method and device for recognizing facial expressions. Background technique [0002] Facial expression recognition refers to analyzing which category the facial expression state belongs to from a given face image, so as to infer the psychological emotions of the recognized object, such as happiness, sadness, surprise, fear, disgust, anger, etc. Facial expression recognition has been widely used in human-computer interaction and machine learning, and is currently a hot topic in the fields of machine learning and pattern recognition. [0003] However, some existing facial expression recognition methods, such as IntraFace, mainly use geometry to extract facial feature points, and it is difficult to detect faces on images with occluded faces, low image resolution, or side faces. As a result, the application range of facial expression recognition is limited. Contents of t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/175G06V40/168
Inventor 谭莲芝李志锋乔宇
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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