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Facial expression recognition input method

An input method and facial expression recognition technology, applied in character and pattern recognition, input/output of user/computer interaction, instruments, etc., can solve problems such as inconvenient use, slow input speed, and unsatisfactory input speed

Inactive Publication Date: 2014-03-26
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, considering the input speed of these input methods, the first few input methods usually require hand operation, and it is not convenient to use when the hands are doing other tasks or for the disabled. The input speed of gamers who require higher input speed cannot meet the requirements. One needs to train the brain to achieve input, and the input speed is extremely slow

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  • Facial expression recognition input method
  • Facial expression recognition input method

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Embodiment Construction

[0117] In the following specific implementation Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 11 , Figure 14 and Figure 15 In the two-dimensional coordinate diagram in , the horizontal axis represents the position of the object in pixels, and the vertical axis represents the sum of pixel gray values.

[0118] Such as figure 1 Shown, the present invention is a kind of facial expression recognition input method, comprises the following steps:

[0119] Make sure that there is no moving object in the shooting environment, that is, the background is still, make an expression in front of the camera, perform step S11, acquire two consecutive frames of images, and calculate the difference grayscale image of the two frames of images. Such as figure 2 ; When shooting, it is required that the face of the person should face the camera as far as possible, and keep a suitable distance (the head can roughly fill the video image output by the camera). Use a camera or ot...

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Abstract

A facial expression recognition input method which comprises the steps of obtaining continuous two frames of images, calculating a difference gray level image of the two frames of images, locating the positions of eyebrows, eyes and the mouth in the current frame, tracking the movements of the eyebrows, the eyes and the mouth and calculating the displacement vector of the target objects, namely the eyebrows, the eyes and the mouth, compared with those of the former frame of image, matching the displacement vector of the target object and facial expression images in a preset facial expression bank, and inputting corresponding button values of the matched facial expression images. According to the method, the designated button values are input utilizing the shape or the displacement of the head of people, hand participation is avoided, and due to the fact that the brain is close to organs on the head, control speed of facial expressions is high, and input is fast.

Description

technical field [0001] The invention relates to an expression recognition input method. Background technique [0002] For the convenience of life, people have designed a variety of input methods other than keyboards and mice, such as touchpad input methods, touch screen input methods, and input methods based on brain wave recognition. However, considering the input speed of these input methods, the first few input methods usually require hand operation, and it is not convenient to use when the hands are doing other tasks or for the disabled. The input speed of gamers who require higher input speed cannot meet the requirements. One needs to train the brain to achieve input, and the input speed is extremely slow. [0003] In view of this, the present invention is proposed. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide an expression recognition input method that av...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01G06K9/00
Inventor 李争平李晋红张常年王辉柏韦欢
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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