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System and method for facial expression detection

A facial expression and expression technology, applied in the field of face recognition

Pending Publication Date: 2020-01-10
SHANGHAI YITU NETWORK SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, at least one embodiment of the present invention provides a system and method for facial expression detection, which can solve the problem of facial expression detection in the surveillance camera scene

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[0020] specific implementation plan

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the aspects described below in conjunction with the drawings and specific embodiments are only exemplary, and should not be construed as limiting the protection scope of the present invention. The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. As used herein, the terms "first" and "second" are used interchangeably to distinguish one or one class of elements from another or another class, respectively, and are not intended to indicate the position of separate elements or importance.

[0022] see figure 1 , which shows a schematic diagram of the composition of an embodiment of the system for facial expression detection of the pres...

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Abstract

The present invention provides a system and method for facial expression detection. The system comprises a camera used for acquiring an image with an input face; a first deep neural network used for detecting the input face in the image; a quality detection module used for judging whether the detected input human face is a human face picture with qualified quality or not, and sending a trigger signal if the detected input human face is the human face picture with qualified quality; a processing module used for intercepting a face area from the image when receiving the trigger signal sent by the quality detection module, and carrying out affine transformation on the face area to obtain a front image corresponding to the input face; and a determination module used for determining the expression classification of the front image as a first expression through a second deep neural network, and when the input faces in more than a preset number of continuous multi-frame images are all the first expressions, determining the input faces as the first expressions, so that the problem of face expression detection in a monitoring camera scene can be solved.

Description

technical field [0001] The invention relates to the field of face recognition, in particular to a system and method for detecting facial expressions. Background technique [0002] Face recognition refers to computer technology that uses the analysis and comparison of facial visual feature information for identity identification. It belongs to the category of biometric identification technology and is an emerging technology that distinguishes individual organisms based on their own biological characteristics. Face recognition technology has high development prospects and economic benefits in the fields of public security investigation, access control system, target tracking and other civilian security control systems. [0003] People show different facial expressions under different psychological conditions. For example, if a person's eyebrows are raised and crowded together, he is likely to be in fear, worry or anxiety; the nostrils are turned out, and the lips are tight,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/161G06V40/174
Inventor 胡焕行黄杰杨忠程
Owner SHANGHAI YITU NETWORK SCI & TECH
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