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Mobile phone indoor positioning and navigation method

An indoor positioning and navigation method technology, applied in the field of navigation, can solve the problems of large accuracy fluctuation range, long time period, and many interference factors, and achieve the effect of small precision fluctuation range, short time period, and few interference factors.

Inactive Publication Date: 2018-12-07
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

But at the same time, these two indoor positioning technologies also have the problems of huge cost, long time period, many interference factors, and large accuracy fluctuation range.

Method used

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  • Mobile phone indoor positioning and navigation method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.

[0018] Such as figure 1 As shown, a mobile phone indoor positioning and navigation method includes the following steps:

[0019] S1, fast 3D reconstruction, using the depth camera of Lenovo Tango mobile phone to obtain the depth information of the scene around the user, and combining the images collected by the 16 million high-pixel camera to model the 3D model of the surrounding scene. The depth information is determined by the time-of-flight provided by structured light and infrared rays, and the obtained depth information is three-dimensionally pasted on the collected color images to obtain a three-dimensional model. At the same time, depth information is beneficial to correct the drift problem of motion tracking;

[0020] S2, computer vision, using the mobile phone camera to collect pictures of surrounding scenes, and then using com...

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Abstract

The invention provides a mobile phone indoor positioning and navigation method including the following steps: S1, fast three-dimensional reconstruction: obtaining depth information of a user surrounding scene through a mobile phone depth camera, and modeling a three-dimensional model of the surrounding scene with combination of the collected image of the mobile phone camera; S2, computer vision: collecting surrounding scene images by using a mobile phone RGB camera, and then carrying out spatial positioning by a computer vision matching algorithm; and S3, path planning and motion tracking: obtaining a user motion state by a mobile phone motion sensor, at the same time, obtaining the features of the surrounding scene by a mobile phone motion tracking sensor in real time, mapping the features to a two-dimensional path plane planning graph to correct a path, and positioning and navigating the user spatial position and motion direction in real time. The method has the beneficial effects ofrealization of mobile phone indoor positioning and navigation, low cost, short time period, fewer interference factors and small precision fluctuation range.

Description

technical field [0001] The invention relates to a navigation method, in particular to an indoor positioning and navigation method for a mobile phone. Background technique [0002] At present, outdoor navigation technology is relatively mature, and GPS and China Beidou have entered the civilian field one after another. However, in terms of indoor navigation, outdoor navigation technology faces the problems of rapid signal attenuation, increased interference factors, and large deviations in positioning accuracy. At present, with the development and maturity of mobile devices and wireless communication technologies, RFID indoor positioning and WiFi indoor positioning technologies are relatively popular indoor positioning and navigation solutions. But at the same time, these two indoor positioning technologies also have the problems of huge cost, long time period, many interference factors, and large fluctuation range of accuracy. Contents of the invention [0003] In order ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20
CPCG01C21/206
Inventor 杨洒孙路伟张如意
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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