Handwriting recognition method and system based on WIFI channel state information

A technology for channel state information and handwriting recognition, which is applied in character and pattern recognition, instruments, computer components, etc., can solve problems such as unrealized solutions, and achieve the effects of improving recognition rate, reducing equipment overhead, high stability and precision

Active Publication Date: 2018-11-13
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Since then, many researchers at home and abroad have started research on CSI-based wireless sensing technology, such as breath detection, indoor positioning, gesture recognition, etc., but they are currently limited to the research stage and there is no specific implementation plan.

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  • Handwriting recognition method and system based on WIFI channel state information
  • Handwriting recognition method and system based on WIFI channel state information
  • Handwriting recognition method and system based on WIFI channel state information

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Embodiment Construction

[0057]The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0058] figure 1 It is a flow chart of steps of a handwriting recognition method based on WIFI channel state information of the present invention. Such as figure 1 Shown, a kind of handwriting recognition method based on WIFI channel state information of the present invention comprises the steps:

[0059] Step S1, use the data acquisition module to collect channel state information, use the...

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Abstract

The invention discloses a handwriting recognition method and a handwriting recognition system based on WIFI channel state information. The method comprises the following steps of S1, using a data acquisition module to collect channel state information, processing the collected channel state information by using a movement section detection and segmentation method, and using a K-nearest neighbor algorithm and a dynamic time normalization method to train a classifier, thus acquiring a trained classifier; and S2, using the data acquisition module to acquire the collected channel state information, recognizing the collected channel state information by using the trained classifier, and thus acquiring a recognition result. According to the method and system provided by the invention, the handwriting letter recognition under the WIFI environment is achieved by using the channel state information of the wireless signal, the limitation that traditional behavior recognition needs the user to additionally carry special equipment is overcome, only the existing common consumption level WIFI equipment is needed, and the additional equipment overheads are reduced.

Description

technical field [0001] The invention relates to the technical field of handwriting recognition, in particular to a handwriting recognition method and system based on WIFI channel state information. Background technique [0002] With the development of Internet of Things technology, behavior recognition technology has gradually attracted people's attention, and as a sub-problem in the field of behavior recognition, handwriting recognition technology has been extensively and deeply studied. As the most basic and natural behavior recognition method, handwriting recognition is mainly divided into online handwriting recognition technology and offline handwriting recognition technology. [0003] Due to the rise of the concept of smart home and the widespread use of mobile devices, wireless routers based on WIFI technology have entered thousands of households. WIFI signals are no longer only used for information communication, but also for behavior recognition. The advantage of us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/2135G06F18/24147
Inventor 汪沄刘宁戚正伟管海兵陈勇彪
Owner SHANGHAI JIAO TONG UNIV
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