Micro-gesture identification method and system based on ultrasonic active detection

A gesture recognition and active detection technology, applied in the field of target recognition, can solve the problem of difficult to achieve high-precision, high-robust micro-gesture recognition and interactive application scenarios, heavy workload of preprocessing and feature extraction, resolution, environmental factor limitations, etc. problems, to achieve the effect of low power consumption, small restrictions, and reduced information redundancy
CN106446801AActive Publication Date: 2017-02-22TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2017-02-22

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Abstract

The invention provides a micro-gesture identification method and system based on ultrasonic active detection. The method includes the following steps of emitting an ultrasonic signal and receiving an ultrasonic echo signal, reflected by an identified gesture action, of the ultrasonic signal; comparing the ultrasonic signal with the ultrasonic echo signal to obtain the reception time delay and frequency resolution variance of the ultrasonic signal and the ultrasonic echo signal; according to the reception time delay and frequency resolution variance, obtaining the distance and velocity information of the timing sequence in the ultrasonic echo signal; and according to the distance and velocity information, performing identification and determination on the identified gesture action through a data driving pattern recognition algorithm. The micro-gesture identification method and system can accurately identify the micro-gesture actions and have the advantages of high resolution, high robustness, low consumption, and low algorithm complexity.
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Description

technical field

[0001] The invention relates to the technical field of target recognition, in particular to a micro gesture recognition method and system based on ultrasonic active detection. Background technique

[0002] The micro-gesture recognition system refers to an electronic system that classifies and recognizes subtle dynamic gestures over a period of time to achieve the purpose of human-computer interaction. Compared with gestures that involve the entire hand movement, such as the large wave of the hand used in the current common gesture recognition methods, the micro gesture recognition system aims to use human hands and fingers to pinch, rub, and rotate, which are in line with people's natural manipulation habits. Subtle dynamic gestures realize the interaction between people and smart devices.

[0003] The micro-gesture recognition system has important practical significance and application prospects. With the development of wearable devices, traditional touch ...

Claims

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