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Indoor locating system and method based on camera communication and image locating technology

An image positioning and indoor positioning technology, applied in the field of positioning, can solve the problems of low overall accuracy and high cost, and achieve the effect of easy spatial separation

Active Publication Date: 2017-05-31
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The overall accuracy of Wi-Fi positioning technology for indoor positioning is not high, only 2 meters, and a large number of network access points need to be laid, and the cost is high

Method used

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  • Indoor locating system and method based on camera communication and image locating technology
  • Indoor locating system and method based on camera communication and image locating technology
  • Indoor locating system and method based on camera communication and image locating technology

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] The implementation of the present invention needs to rely on the BP neural network model, and the basic principles and algorithm flow of the BP neural network are as follows:

[0028] BP (Back Propagation) neural network, the full name of the multi-layer forward neural network of error backpropagation, is one of the most widely used neural network models at present, which can be used for classification, clustering and prediction, etc., through historical data During training, the network can learn the knowledge implicit in the data. The main feature of the BP neural network is that the signal is transmitted forward and the error is reversed; it is usually composed ...

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Abstract

The invention provides an indoor locating system and method based on a camera communication and image locating technology. The system comprises an emitting end and a receiving end, wherein the emitting end is used for sending a light signal obtained by coding and modulating position information of the emitting end to a space; the receiving end is used for receiving the light signal and performing image locating computing to obtain the position information after decoding and demodulating the light signal. The invention discloses the indoor locating system and method based on the camera communication and image locating technology, and the system and the method are designed for solving the problems such as high hardware cost, nonsupport of high-speed movement, low locating precision and the like of an existing indoor locating system. The system has the advantages of being green, environmentally-friendly, being capable of realizing natural high-density coverage and easily realizing signal spatial isolation and the like.

Description

technical field [0001] The present invention relates to the technical field of positioning, and more specifically, to an indoor positioning system and method based on camera communication and image positioning technology. Background technique [0002] At present, positioning technology develops very rapidly and is widely used. The commonly used positioning methods mainly include GPS positioning technology, RFID indoor positioning technology and Wi-Fi positioning technology. [0003] Among them, the system that uses GPS positioning satellites to perform real-time positioning and navigation around the world is called the global satellite positioning system, or GPS for short. GPS is a comprehensive, all-weather, all-time, high-precision satellite navigation system developed and established by the US Department of Defense. It can provide global users with low-cost, high-precision three-dimensional position, speed and precise timing navigation information. The application model ...

Claims

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Application Information

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IPC IPC(8): G01C21/20G01C21/00
CPCG01C21/00G01C21/206
Inventor 张民赵炜铖张渤罗鹏飞韩大海
Owner BEIJING UNIV OF POSTS & TELECOMM
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