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Positioning method, apparatus and device based on signature image, and storage medium

A positioning method and signboard technology, which is applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of positioning accuracy impact, data maintenance difficulty, and data maintenance difficulty, and achieve high-precision positioning and easy data The effect of maintenance

Inactive Publication Date: 2018-06-22
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use scenarios of the above positioning technologies are different, and the problems and shortcomings brought about are also different. For example, the application scenarios of GPS can only be used in outdoor open spaces and the weather is good, and the positioning location is limited; the difficulty of WIFI and Bluetooth positioning lies in Obtain high-quality WIFI and Bluetooth hotspot data. If the quality of WIFI and Bluetooth hotspot data is not high, the positioning accuracy will be affected, and the positions of WIFI and Bluetooth hotspots may change frequently, making data maintenance very difficult. The difficulty of geomagnetic positioning lies in Data collection, and the geomagnetic situation changes faster, making data maintenance more difficult

Method used

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  • Positioning method, apparatus and device based on signature image, and storage medium
  • Positioning method, apparatus and device based on signature image, and storage medium
  • Positioning method, apparatus and device based on signature image, and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0037] figure 1 It is a flowchart of the positioning method based on the signboard image in Embodiment 1 of the present invention. This embodiment is applicable to the situation of positioning based on the signboard image. This method can be executed by a positioning device based on the signboard image. The implementation of this embodiment The subject can be a server, and the method can specifically include:

[0038] S110. Obtain candidate signboards by filtering from the signboard library according to the shooting position of the current image.

[0039] Wherein, the current image may be an image taken by the user using a shooting device (such as a camera or a mobile phone), and the shooting location of the current image may be the GPS coordinates of the user's current rough location.

[0040] The signboard is mainly used to indicate the name and symbol of the store, which can be called the store logo (the name of the store). The signboard is legally defined as a business na...

Embodiment 2

[0051] figure 2 It is a flowchart of a positioning method based on a signboard image in Embodiment 2 of the present invention. On the basis of the first embodiment, this embodiment further optimizes the above-mentioned positioning method based on the signboard image. Correspondingly, the method in this embodiment may specifically include:

[0052] S201. Cluster the signboard sizes in each signboard sample image to obtain at least one common signboard size.

[0053] Wherein, the signboard sample image may be a certain number of signboard images of different signboard sizes confirmed manually.

[0054] Specifically, the size of the signboard in each signboard sample image can be clustered using the k-means algorithm, that is, each signboard sample image is classified according to the size of the signboard to obtain at least one classification, and the possible size of the signboard image can be counted. Classified signboard sizes serve as common signboard sizes. Exemplarily...

Embodiment 3

[0075] Figure 4 It is a flowchart of the positioning method based on the signboard image in Embodiment 3 of the present invention. This embodiment is applicable to the situation of positioning based on the signboard image. This method can be executed by a positioning device based on the signboard image. The implementation of this embodiment The subject can be a client, and the method can specifically include:

[0076] S310. Acquire a current image taken by the user and a shooting location of the current image.

[0077] Wherein, the current image may be an image taken by the user using a client (such as a mobile phone), and the shooting location of the current image may be the GPS coordinates currently roughly positioned by the user.

[0078] Specifically, the current image taken by the user and the rough location of the current image are acquired.

[0079] S320. According to the current image and the shooting position of the current image, send a positioning request to the ...

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Abstract

Embodiments of the present invention disclose a positioning method, apparatus and device based on a signature image, and a storage medium. The method comprises: selecting a candidate signboard from asignboard library according to a shooting location of the current image; matching the signboard image part contained in the current image with the selected candidate signboard to obtain a matching candidate signboard; and taking the location information of the matched candidate signboard as the current location information. According to the technical scheme provided by the embodiments of the present invention, the signboard image in the image is extracted, the extracted signboard image is combined with the rough location information of the user, an accurate positioning point is obtained through training matching, and without being affected by factors such as the weather and the location, high-precision positioning can be implemented, and data maintenance can be relatively easily carried out.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of positioning, and in particular, to a positioning method, device, device and storage medium based on a signboard image. Background technique [0002] With the rapid development of positioning technology and the continuous updating of smart terminal technology, location-based services are widely used in various fields of work and life. People have higher and higher requirements for positioning accuracy, especially in indoor positioning, and its accuracy has always been a difficult point. Positioning technology is based on the premise of location services. [0003] At present, outdoor positioning is mainly based on the Global Positioning System (GPS), and indoor positioning is mainly based on WIFI, Bluetooth and geomagnetism. The use scenarios of the above positioning technologies are different, and the problems and shortcomings brought about are also different. For example, the a...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06K9/46G06K9/62
CPCG06V10/22G06V10/443G06F18/214
Inventor 吴云鹏王洪志吴俊柯海帆
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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