Ultrasonic-based gesture recognition method and system

A technology of gesture recognition and ultrasound, applied in the field of gesture recognition methods and systems based on ultrasound, can solve the problems that the touch screen and keys cannot meet the accuracy requirements, and achieve the effects of good human-computer interaction experience, enhanced interaction experience, and convenient control

Inactive Publication Date: 2018-04-20
SHENZHEN UNIV
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AI Technical Summary

Problems solved by technology

[0003] At present, the control methods of smart watches and mobile phones are mainly concentrated on the touch screen and buttons. For the daily control of the device when the screen size is very small, or how to play games on such devices, the interaction method based on the touch screen and buttons can no longer meet the demand for precision.
If you use the existing interaction methods, your fingers will inevitably block part of the device screen, which is not a good solution

Method used

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  • Ultrasonic-based gesture recognition method and system

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Embodiment Construction

[0032] figure 1 Shows the flow chart of the ultrasonic-based gesture recognition method provided by the present invention, which is described in detail as follows:

[0033] Step S0, collecting the gesture movement to form a gesture template database and storing it. Collect gesture movements comprehensively, store each collected complete gesture movement, store it in the database, establish a complete set of gesture movement models, and number each movement gesture, etc.; During the gesture process, the position change of the hand away from the multimedia during the whole process is saved as a template, and the user can customize the gesture and save it as a template.

[0034] Step S1, the speaker of the multimedia terminal sends out an ultrasonic signal; the speaker on the multimedia terminal is used to send out an ultrasonic wave, wherein the ultrasonic wave is in the form of a cosine wave, and when it is emitted, it is an ultrasonic wave of a single or multiple frequencies,...

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Abstract

The invention is applicable to the field of modifications of wireless identification techniques and provides an ultrasonic-based gesture recognition method, particularly an ultrasonic-based gesture recognition method and a control system. The ultrasonic-based gesture recognition method utilizes multiple microphones and speakers built in a multimedia terminal to arrive at the above function. The ultrasonic-based gesture recognition method comprises the main steps of transmitting, by the speakers, cosine ultrasonic waves of one or multiple frequencies; acquiring, by the microphones, ultrasonic signals reflected back by motion of hands; performing a series of digital signal processing methods to obtain relative displacements of the hands relative to the microphones; recognizing different gestures that may control the multimedia terminal according to templates of the different gestures, which may be pre-customized, relative to the displacements of the microphones.

Description

technical field [0001] The invention belongs to the field of recognition technology improvement, in particular to an ultrasonic-based gesture recognition method and system. Background technique [0002] Nowadays, with the gradual popularization of mobile devices and home multimedia devices, a new passive control method is increasingly required to expand the existing control method. At present, smart wearable devices are similar to smart watches and smart phones. Due to the limitations of the screen, although the existing human-computer interaction methods such as button touch screens can basically meet daily needs, the experience is not good, especially smart watches. Users have limited control methods on these devices, so using wireless sensing control methods outside the device screen will better enhance the user experience and allow developers to take advantage of more dimensional human-computer interaction options. [0003] At present, the control methods of smart watch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01
CPCG06F3/017
Inventor 伍楷舜陈孟奇谢海
Owner SHENZHEN UNIV
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