Facial expression based lie detection method and system

A facial expression, face technology, applied in the field of image processing, can solve problems such as discomfort and disgust

Active Publication Date: 2015-12-16
BEIJING KUANGSHI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

First of all, it requires special equipment and professionals to operate; moreover, the use of the police polygraph requires the activ

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  • Facial expression based lie detection method and system
  • Facial expression based lie detection method and system
  • Facial expression based lie detection method and system

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Embodiment Construction

[0020] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other instances, some technical features known in the art have not been described in order to avoid obscuring the present invention.

[0021] It should be understood that the present invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the / the" are inte...

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Abstract

The invention provides a facial expression based lie detection method and system. The method comprises: receiving a facial video of a user; detecting a facial image feature of at least one frame of the face video; identifying facial expression based on the face image feature; and calculating a lying probability of the user by utilizing a trained artificial neural network based on the identified facial expression. According to the facial expression based lie detection method and system, provided by the invention, analysis can be automatically performed in a dialogue process without the need for special cooperation of the user, so that the facial expression based lie detection method and system, provided by the invention, are easy to realize and very flexible and convenient to use.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and system for polygraph detection based on facial expressions. Background technique [0002] Since ancient times, in production and life, judging whether a person's words are credible has been an important issue. For example, police agencies interrogate suspects, banks review lenders, and they all need to judge whether a person is honest at this moment. It is because this problem is so important that many methods have been invented for it. For example, the police can use a lie detector to determine whether a person is lying by measuring changes in blood pressure and heartbeat. [0003] However, these methods have their own limitations. For example, the credit information system can only give a person's general credit level, but cannot judge the situation of a specific occasion. Moreover, this system is only for a person's economic situation and cannot be ap...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/174G06V40/40
Inventor 张弛印奇
Owner BEIJING KUANGSHI TECH
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