Facial expression recognition method and device

A technology of facial expression recognition and facial expression, which is applied in the field of facial expression recognition, can solve the problems of limited application range of facial expression recognition, small image resolution, and difficulty in detection, etc., to achieve strong usability and practicability , high expression recognition rate, and the effect of improving accuracy

Active Publication Date: 2016-06-08
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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  • Facial expression recognition method and device
  • Facial expression recognition method and device
  • Facial expression recognition method and device

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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 belongs to the machine learning technical field and provides a facial expression recognition method and device. The method includes the following steps that: a face image satisfying a preset condition is obtained; the location of N feature points of a face in the face image are detected, wherein N is an integer greater than zero; eyes, a nose and / or the corners of a mouth are selected as key feature points according to the detected locations of the N feature points, so that the face image can be calibrated; facial expression recognition is performed on the calibrated face image through a trained depth convolutional neural network, and a recognition result is outputted. With the method and device of the invention adopted, the accuracy of facial expression recognition can be effectively improved, and even the facial expression recognition rate of faces in images where large-area occlusion exists, low-resolution images and images where side faces exist can be improved.

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 Applications(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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