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Indoor positioning checking method based on photographing of front camera and rear camera of mobile phone

An indoor positioning, front and rear positioning technology, applied in photo interpretation, image analysis, measurement devices and other directions, can solve the problems of low image matching accuracy, small image matching range, low positioning accuracy, etc., to achieve simple steps, improve speed and Accurate, method-step-simple effect

Active Publication Date: 2022-06-28
西安大地测绘股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problems are: the lack of calibration conditions for indoor positioning of image matching from a single-direction camera, so that the user's indoor positioning accuracy is not high; in addition, the range of image matching is small, and the accuracy of image matching is low

Method used

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  • Indoor positioning checking method based on photographing of front camera and rear camera of mobile phone

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Embodiment Construction

[0053] like figure 1 As shown in the present invention, an indoor positioning verification method based on photos taken by the front and rear cameras of a mobile phone includes the following steps:

[0054] Step 1. Establishment of indoor space rectangular coordinate system:

[0055] Take any point in the room as the origin , to pass the origin and points to due north as axis, to pass the origin and point due east as axis, to pass the origin and perpendicular to the axis and the plane formed by the axis pointing to heaven axis to establish a rectangular coordinate system for indoor space ;

[0056] Step 2. Create an indoor panoramic image library:

[0057] Step 201, using a panoramic camera from the origin Start a panoramic shot of the interior, get Indoor panoramic images are sent to the computer to form an indoor panoramic image library; Indoor panoramic image shooting points to obtain the first indoor panoramic images, and are all positive...

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Abstract

The invention discloses an indoor positioning checking method based on photographing of front and rear cameras of a mobile phone. The indoor positioning checking method comprises the following steps: 1, establishing an indoor space rectangular coordinate system; 2, establishing an indoor panoramic image library; 3, acquiring indoor double-scene images by using the smart phone; 4, matching the front image and the rear image with an indoor panoramic image library; 5, acquiring the indoor position of the user; and 6, checking the indoor position of the user. The method is simple in steps and reasonable in design, images shot by the front camera and the rear camera of the smart phone at the same time are used for image matching indoor positioning, the double-scene shooting function of the mobile terminal is effectively utilized, the matching range is widened, and the matching accuracy and the positioning precision are improved; and double-scene photographing has a checking condition that front and rear optical axes are parallel, mutual checking can be carried out from matched resolving positions in two directions, and the indoor positioning speed and precision can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of image matching indoor positioning, and in particular relates to an indoor positioning verification method based on photos taken by front and rear cameras of a mobile phone. Background technique [0002] In recent years, with the development of image recognition technology, the accuracy and speed of image matching have been greatly improved, and it has become possible to locate mobile phones by capturing images with mobile phones. Mobile phones with dual-view front-end and back-end shooting functions have become mainstream devices. In this case, the effective use of image recognition technology, combined with the mobile phone dual-view front-end and back-end shooting technology, makes it possible to achieve accurate indoor positioning. [0003] At present, the image matching positioning method is adopted, which is to obtain the user's current position image through a single-direction camera on the mobile t...

Claims

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Application Information

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IPC IPC(8): G01C11/04G01C11/00H04N5/225H04M1/72403G06T7/73G06V10/46G06V10/75G06F16/583
CPCG01C11/04G01C11/00H04M1/72403G06T7/73G06F16/583H04N23/45G06F18/22
Inventor 陈刚许文文王锋刘缤艳张富军刘占琴温桂霞吴锋社曹斌斌牛林科
Owner 西安大地测绘股份有限公司
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