CN108629384A - A kind of LIFI indoor locating systems based on image recognition - Google Patents
A kind of LIFI indoor locating systems based on image recognition Download PDFInfo
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- CN108629384A CN108629384A CN201710157566.9A CN201710157566A CN108629384A CN 108629384 A CN108629384 A CN 108629384A CN 201710157566 A CN201710157566 A CN 201710157566A CN 108629384 A CN108629384 A CN 108629384A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0025—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement consisting of a wireless interrogation device in combination with a device for optically marking the record carrier
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
- G06K7/10732—Light sources
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/146—Methods for optical code recognition the method including quality enhancement steps
Abstract
The invention discloses a kind of LIFI indoor locating systems based on image recognition, including light source layer, application layer and service layer, wherein the light source layer includes light source and modulation module, modulation module modulates the light that light source is sent out into line amplitude, and the frequency to change light carries out data transmission；The application layer is in communication with each other with the light source layer, processing after being acquired to the light that light source layer is sent out, by treated, image is sent to the service layer, and service layer is decoded rear position analysis to image, it is positioned and is navigated according to corresponding map, and result is beamed back into application layer.The present invention utilizes quick light pulse wireless transmission information, can indoor precise positioning, complete dual role, Low emissivity, low energy consumption, low-carbon environment-friendly using the existing energy consumption output such as street lamp, room lighting and public illumination.
Description
Technical field
The invention belongs to public transport field, more particularly to a kind of LIFI indoor locating systems based on image recognition.
Background technology
Indoor map and positioning service will create completely new sale, advertisement and social networking service, sweeping taking up an area
The indoor scenarios such as fair hall, children's paradise, megastore, supermarket, underground parking, there is an urgent need to indoor positionings and navigation skill
Art, to create a tracking and direct customers, locating goods and the communication network of transaction.
Future is the epoch of mobile Internet, mobile terminal such as smart mobile phone, ipad, notebook gradually it is intelligent with it is small-sized
Change.With the rapid development of wireless access wide band technology and mobile terminal technology, people it is highly desirable can whenever and wherever possible or even
Easily information can be obtained from internet and service, mobile Internet come into being and grow rapidly in moving process.It is existing
In public place such as hotel, supermarket, Condom etc., all towards enlargement, professional development, big commercial circle is gradually formed.But
Also it brings a little trouble to client, such as parking difficulty, looks for required commodity difficulty etc., indoor positioning technologies can be very good to solve
It has determined these problems.Using indoor positioning technologies, it is known that：1. where underground garage can stop 2. milk supermarket which
A local 3. destination I how to go 4. Nike brand shops somewhere.It is walked at sight spot or the prodigious place of flow of the people, personnel
It loses, in terms of indoor positioning technologies can be also used for rescue worker.
Indoor positioning technologies have the active demand with growth of reality, indoor positioning and airmanship, can open up new
Application field.In the large-scale interior space, people do not have to the place for worrying can not find again, without worrying child's meeting again
It loses.In conjunction with the big data processing function in high in the clouds, commercial user can count becoming for consumer spending with the management inventory of digitization
Gesture brings the operation management of more scientific more quantification.
Invention content
In view of this, the purpose of the present invention is to provide a kind of LIFI indoor locating systems based on image recognition, utilize
The LED lamp of indoor intensive installation, built-in signal modulation module, position encoded information superposition, broadcast type is sent on light.
In order to achieve the above objectives, the present invention provides a kind of LIFI indoor locating systems based on image recognition, including light
Active layer, application layer and service layer, wherein
The light source layer includes light source and modulation module, and modulation module modulates the light that light source is sent out into line amplitude, to change
The frequency for becoming light carries out data transmission；
The application layer is in communication with each other with the light source layer, the processing after being acquired to the light that light source layer is sent out, will
Treated, and image is sent to the service layer, and service layer is decoded rear position analysis to image, according to corresponding map into
Row positioning and navigation, and result is beamed back into application layer.
Preferably, the application layer includes image capture module, terminal processing module and transceiver module, and three connects successively
It connects, image capture module carries out Image Acquisition to the light source, and the image collected is exported and carries out figure to terminal processing module
After coding, sends out through transceiver module, sent out through transceiver module, Signal coding takes barcode encoding mode.
Preferably, the service layer includes communication module, decoder module, position module and mapping module, the communication mould
After block receives the information that the application layer is sent, it is sent to decoder module and is decoded, decoded information input position module
Location resolution is carried out, the position parsed is exported after being positioned and navigated to mapping module, is transmitted further to communication module
It is exported.
Preferably, described image acquisition module is CMOS formula cameras.
Preferably, described image acquisition module is mobile phone camera.
Preferably, described image acquisition module is rolling screen door shutter sample mode.
Preferably, the terminal processing module includes gray scale conversion unit, Image erosion unit, row superpositing unit, histogram
Figure balanced unit and binary cells, five are sequentially connected, and complete the processing to the image collected, and output is clearly and each
The unique corresponding bar code of light source uses 128C said shanks here.
Preferably, the light source is LED.
The beneficial effects of the present invention are：
1, the problem of visible light communication is green safe, and there is no electromagnetic radiation, it is harmless；
2, visible light communication does not need frequency license, and not will produce electromagnetic radiation, will not be by the interference of electromagnetic field；
3, using forth generation lighting source LED, the low service life of power is long, and environmental protection is reliable and covers extensively, and circuit changes
It makes at low cost.
Description of the drawings
In order to keep the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides following attached drawing and carries out
Explanation：
Fig. 1 is the structural schematic diagram of the LIFI indoor locating systems based on image recognition of present system embodiment 1；
Fig. 2 is the structural schematic diagram of the LIFI indoor locating systems based on image recognition of present system embodiment 2；
Fig. 3 is the LIFI indoor locating system application layer terminal processes based on image recognition of present system embodiment 2
Module gray scale conversion unit exports image；
Fig. 4 is the LIFI indoor locating system application layer terminal processes based on image recognition of present system embodiment 2
Module image erosion unit exports image；
Fig. 5 is the LIFI indoor locating system application layer terminal processes based on image recognition of present system embodiment 2
Module row superpositing unit exports image；
Fig. 6 is the LIFI indoor locating system application layer terminal processes based on image recognition of present system embodiment 2
Module histogram equalization unit exports image；
Fig. 7 is the LIFI indoor locating system application layer terminal processes based on image recognition of present system embodiment 2
Two bit location of module exports image；
Fig. 8 is the LIFI indoor locating system application layer terminal processes based on image recognition of present system embodiment 2
Two bit location of module exports image after image multirow replicates；
Fig. 9 is that the LIFI indoor locating systems based on image recognition of present system embodiment 2 service layer decoder output
Image；
Figure 10 is the structural schematic diagram of the LIFI indoor locating systems based on image recognition of present system embodiment 3；
Specific implementation mode
Below in conjunction with attached drawing, the preferred embodiment of the present invention is described in detail.
System embodiment 1
Referring to Fig. 1, it show the structure of the LIFI indoor locating systems based on image recognition of present system embodiment 1
Schematic diagram, including light source layer 10, application layer 20 and service layer 30, wherein
The light source layer 10 includes light source and modulation module, and modulation module modulates the light that light source is sent out into line amplitude, with
The frequency for changing light carries out data transmission；
The application layer 20 is in communication with each other with the light source layer 10, the place after being acquired to the light that light source layer 10 is sent out
Reason, by treated, image is sent to the service layer 30, and service layer 30 is decoded rear position analysis to image, according to correspondence
Map positioned and navigated, and result is beamed back into application layer 20.
By above-mentioned setting, modulation module is implanted into light source, the location information of each light source is stored in service layer 30；Using
Layer 20 is sent to service layer 30 after carrying out Image Acquisition with light source, and the light of the different frequency sent out by light source obtains the light source
Location information, service layer 30 by where the light source position and navigation information send back to application layer 20, whole system is clearly simple
Clean, efficiently quick, registration, can all realize personnel, vehicle, assets etc. and be accurately positioned, moreover it is possible to realize trajectory track, region
The functions such as alarm, camera shooting linkage.
System embodiment 2
Referring to Fig. 2, it show the LIFI indoor locating systems based on image recognition of invention system embodiment 2
Structural schematic diagram,
Application layer 20 includes image capture module 210, terminal processing module 220 and transceiver module 230, and three connects successively
It connects, image capture module 210 carries out Image Acquisition to the light source, and the image collected is exported to terminal processing module 220
It after carrying out image coding, is sent out through transceiver module 230, the image after coding is 128c bar codes, compared with other bar codes
Get up, relatively complicated, the character of support is also relatively more, and has the different formulas that is encoded to be used for interaction, therefore its
It is also larger using elasticity.
In a particular embodiment, image capture module 210 is CMOS formulas camera or mobile phone camera, and acquisition mode is volume
Curtain door shutter mode, line by line sequential exposure are not suitable for the shooting of moving object, but when being exposed using global shutter mode, institute
There is pixel to be exposed in synchronization, freezes similar to by moving object, the object for being suitble to shooting quickly to move, however it is global fast
Door is likely to occur as paste phenomenon, and the length of time for exposure is depended on whether appearance as paste phenomenon, if the time for exposure is long, and object
Body movement is too fast, will appear as paste；If the time for exposure is very short, it is similar to moving object and is frozen in moment, then rare picture
Paste；And by the way of rolling screen door shutter, by taking the video sampling speed of 100 frames/second as an example, the exposure of image top and bottom is first
Up to 10 milliseconds of difference afterwards, often shoot piece image, and the variation of the light in 10mS can be collected with static image.Adjustment letter
Number modulator approach is used into shape information using the rolling shutter of cmos image sensor, in conjunction with image processing techniques, is parsed hidden
Hide Signal coding in the picture.
Terminal processing module 220 includes gray scale conversion unit, Image erosion unit, row superpositing unit, histogram equalization list
Member and binary cells, five are sequentially connected, and gray scale conversion unit carries out ash to 210 collected coloured image of image capture module
Degree conversion, the collected original image of image capture module are coloured image, and 3000K colour temperatures are used in specific embodiment
LED light source, display color are yellow, and it is light and dark stripe pattern, mobile phone camera that mobile phone camera, which actually photographed,
The image taken is rolling image, takes the mode for cycling through address coding, tranmitting frequency is adjusted, in this way in each image
In can obtain the information for completely include clear area, pixel switchs to 8 by gray scale conversion unit by 24, is grey referring to Fig. 3
Each fringe gray level value of gray level image for spending conversion unit output is inconsistent, and edge is irregular, so needing to be further processed.
The effect of Image erosion unit can be expressed as detecting image with structural element, and finding out in image can put
The region of the lower structural element, corrosion is a kind of elimination boundary point, the process for making boundary internally shrink, and can be used for eliminating small
And meaningless object can choose sufficiently large structural element if there is tiny connection between two objects, by tiny company
It is logical to erode, to corrode white area high luminance area in the present embodiment, referring to Fig. 4, for the output of Image erosion unit
Image, blackstreak part are widened, the influence interfered between the variation of compensating lamp light dark fringe.
Row superpositing unit is to carry out 64 conversions to each row of image, is then superimposed, then be averaged, eliminates on image
The different influence of lower part gray value, output image is referring to Fig. 5.
Histogram equalization unit to the gray level more than number of pixels in image into line broadening, and it is few to number of pixels in image
Gray scale compressed, to extend the dynamic range as former value, improve the variation of contrast and gray tone, make image
It is more clear, output image is referring to Fig. 6.
Binary cells carry out binary conversion treatment to the image after histogram equalization, obtain two bit images, export image
Referring to Fig. 7.Two bit images are being subjected to multirow duplication, 128c bar code images are being obtained, referring to Fig. 8.By said units by
Processing to the image collected is completed in a processing, after issue service layer and be decoded analysis, be service layer to upper referring to Fig. 9
The decoding output of 128c bar codes, the number of striped and opposite position are stated, reproduction is obtained for, is known using the bar code of standard
Other software can absolutely accuracy rate be read out.The present invention uses the 128c coding modes of standard, and maturation is utilized
The precision and redundancy that coding mode is considered, and identification software need not be developed again in receiving terminal, it can utilize existing
Identification facility, such as bar code recognition software APP common on mobile phone is identified.
System embodiment 3
Referring to Figure 10, it show the knot of the LIFI indoor locating systems based on image recognition of present system embodiment 3
Structure schematic diagram, it is preferable that the service layer 30 includes communication module 310, decoder module 320, position module 330 and mapping module
340, it after the communication module 310 receives the information that the application layer 20 is sent, is sent to decoder module 320 and is decoded, solve
Information input position module 330 after code carries out location resolution, and the position parsed is exported and is determined to mapping module 340
Behind position and navigation, it is transmitted further to communication module 310 and is exported.
Service layer 30 is in communication with each other with application layer 20, and application layer 20 emits beam collected light source representative information
It is sent to service layer 30 to be decoded and parse, service layer 30 is according to position module 330 and mapping module 340 to decoded letter
Breath is positioned and is navigated, and the position where light source and navigation information are provided.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (8)
1. a kind of LIFI indoor locating systems based on image recognition, which is characterized in that including light source layer, application layer and service
Layer, wherein
The light source layer includes light source and modulation module, and modulation module modulates the light that light source is sent out into line amplitude, to change light
The frequency of line carries out data transmission；
The application layer is in communication with each other with the light source layer, and the processing after being acquired to the light that light source layer is sent out will be handled
Image afterwards is sent to the service layer, and service layer is decoded rear position analysis to image, is determined according to corresponding map
Position and navigation, and result is beamed back into application layer.
2. the LIFI indoor locating systems according to claim 1 based on image recognition, which is characterized in that the application layer
Including image capture module, terminal processing module and transceiver module, three is sequentially connected, image capture module to the light source into
The image collected is exported after carrying out image coding to terminal processing module, is sent out through transceiver module, encoded by row Image Acquisition
Image afterwards is bar code.
3. the LIFI indoor locating systems according to claim 1 based on image recognition, which is characterized in that the service layer
Including communication module, decoder module, position module and mapping module, the communication module receives the information that the application layer is sent
Afterwards, it is sent to decoder module to be decoded, decoded information input position module carries out location resolution, the position that will be parsed
Set output positioned and navigated to mapping module after, be transmitted further to communication module and exported.
4. the LIFI indoor locating systems according to claim 2 based on image recognition, which is characterized in that described image is adopted
Integrate module as CMOS formula cameras.
5. the LIFI indoor locating systems according to claim 2 based on image recognition, which is characterized in that described image is adopted
Integrate module as mobile phone camera.
6. the LIFI indoor locating systems according to claim 2 based on image recognition, which is characterized in that described image is adopted
Integrate module as rolling screen door shutter sample mode.
7. the LIFI indoor locating systems according to claim 2 based on image recognition, which is characterized in that at the terminal
Reason module includes gray scale conversion unit, Image erosion unit, row superpositing unit, histogram equalization unit and binary cells, and five
Be sequentially connected, complete processing to the image collected, output clearly, with the unique corresponding 128c bar codes of each light source.
8. the LIFI indoor locating systems according to claim 1 based on image recognition, which is characterized in that the light source is
LED。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157566.9A CN108629384A (en) | 2017-03-16 | 2017-03-16 | A kind of LIFI indoor locating systems based on image recognition |
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| CN201710157566.9A CN108629384A (en) | 2017-03-16 | 2017-03-16 | A kind of LIFI indoor locating systems based on image recognition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110307839A (en) * | 2019-05-09 | 2019-10-08 | 南京工程学院 | A kind of mine downhole positioning system and localization method based on specific light frequency |
| CN110440808A (en) * | 2019-08-13 | 2019-11-12 | Oppo（重庆）智能科技有限公司 | Indoor orientation method, system and device based on visible light communication |
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| CN105636202A (en) * | 2016-03-16 | 2016-06-01 | 广东工业大学 | Indoor fusion positioning system |
| CN105698798A (en) * | 2016-03-21 | 2016-06-22 | 文成县刀锋科技有限公司 | Household navigation system of energy-saving LIFI (Light Fidelity) communication |
| CN106209230A (en) * | 2016-07-11 | 2016-12-07 | 中国科学院上海技术物理研究所 | A kind of visible light communication system identifying striations code based on APP |
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| CN203519822U (en) * | 2013-04-09 | 2014-04-02 | 北京半导体照明科技促进中心 | Visible-light-based indoor positioning device and system |
| CN105636202A (en) * | 2016-03-16 | 2016-06-01 | 广东工业大学 | Indoor fusion positioning system |
| CN105698798A (en) * | 2016-03-21 | 2016-06-22 | 文成县刀锋科技有限公司 | Household navigation system of energy-saving LIFI (Light Fidelity) communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110307839A (en) * | 2019-05-09 | 2019-10-08 | 南京工程学院 | A kind of mine downhole positioning system and localization method based on specific light frequency |
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Application publication date: 20181009 |