CN107395987A - A kind of smart mobile phone frame rate control method and system for visible light communication - Google Patents
A kind of smart mobile phone frame rate control method and system for visible light communication Download PDFInfo
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- CN107395987A CN107395987A CN201710771950.8A CN201710771950A CN107395987A CN 107395987 A CN107395987 A CN 107395987A CN 201710771950 A CN201710771950 A CN 201710771950A CN 107395987 A CN107395987 A CN 107395987A
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- 238000004891 communication Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003384 imaging method Methods 0.000 claims abstract description 44
- 230000002093 peripheral effect Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 208000032365 Electromagnetic interference Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003709 image segmentation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/683—Vibration or motion blur correction performed by a processor, e.g. controlling the readout of an image memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/684—Vibration or motion blur correction performed by controlling the image sensor readout, e.g. by controlling the integration time
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- Signal Processing (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Studio Devices (AREA)
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Abstract
The invention discloses a kind of smart mobile phone frame rate control method and system for visible light communication, the system includes smart mobile phone housing main body, smart mobile phone camera, touch display screen and the hardware circuit in smart mobile phone housing main body；The smart mobile phone housing main part side button and touch display screen can be used in the reception capture for controlling smart mobile phone camera to carry out image；Imaging sensor and digital signal processor are provided with the smart mobile phone camera；The hardware circuit includes electronic operation processor module and is connected with other peripheral hardwares, and the electronic operation processor module is arranged on the hardware circuit inside smart mobile phone housing main body with other peripheral hardwares.The system is based on the imaging sensor in smart mobile phone, by improving the frame rate of imaging sensor, because of the blur effect that shake is brought during the continuous capture images of compensation smart mobile phone, has broad application prospects.
Description
Technical field
The present invention relates to technical field of visible light communication, and in particular to a kind of smart mobile phone frame speed for visible light communication
Rate control method and system.
Background technology
In recent years, the semiconductor devices LED for being described as " green illumination " is developed rapidly, compared to traditional incandescent lighting
Light source, LED have the characteristics that low energy consumption, long lifespan, green.Meanwhile LED also has that modulating performance is good, response sensitivity
It is high, without advantages such as electromagnetic interferences, signal can be transmitted with the high frequency of human eye None- identified, and the optical frequencies that LED is sent is not
Need permission, it is possible to achieve the high broadband of low cost and the high wireless telecommunications of transmission rate, thus expedited the emergence of one can be real
Now illumination and technology --- the visible light communication technology of communicating integral.
With the development of mobile intelligent and the continuous renewal of smart mobile phone function, demand of the people for smart mobile phone
Increasingly it is intended to diversification, nowadays the means in smart mobile phone as communication are merely by with GSM (global mobile communication systems
System) standard and CDMA (CDMA radio communication technology) mode realize that is, data signal is communicated；Smart mobile phone video camera
Means of communication initially is not designed to, if can be it will be seen that optical communication technique is used in combination with smart mobile phone function, by intelligence
Mobile phone camera is as OCC (Optical Camera Communication) communication equipment, for carrying out light in visible light communication
The transmission of signal of communication, then the popularization of smart mobile phone in daily life will bring very big facility.
It is right because OCC (Optical Camera Communication) communications are a kind of picture frame unit communication modes
Frame rate, which is controlled, is advantageous to OCC communications, convenient to adjust OCC communications speed；In existing technology, smart mobile phone is clapped
According to when handset motion smart mobile phone camera capture images can also be impacted, when the first is mobile phone capture images
Offset a very small angle, second of parallel fortune of the upper machine in vertical direction or other directions when being mobile phone capture images
It is dynamic, it can all cause the pixel that the target caught is shown on the image sensor to shift so that frame of pixels thickens, and right
Frame rate, which is controlled, can reduce the influence that fuselage motion is brought, you can to compensate the motion of smart mobile phone fuselage.
Therefore, extremely it is necessary to develop a kind of smart mobile phone frame rate control method and system for visible light communication,
The speed of smart mobile phone imaging sensor capture images is adjusted, while can accurately obtain visible light communication data；Meet user
To the demand of diversification smart mobile phone function, the smart mobile phone hardware circuit such as Intelligent Optimal mobile phone camera and imaging sensor
Use, bigizationner utilize the existing hardware device of mobile phone, with reference to visible light communication technology, realize while image is received
Realize the transmission of visible light communication signal.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, there is provided a kind of smart mobile phone frame for visible light communication
Method of rate control, the blur effect brought is shaken when methods described compensate for smart mobile phone continuous capture images, can be accurate
Visible light communication data is obtained, the utilization of smart mobile phone in optical communications is increased, has expanded the utility function of smart mobile phone, is had
Have broad application prospects.
Another object of the present invention is to provide a kind of smart mobile phone frame rate control system for visible light communication.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of smart mobile phone frame rate control method for visible light communication, it the described method comprises the following steps：
The image of imaging sensor capture LED light source in step 1, smart mobile phone camera, obtains complete image pixel
Information, and according to the intensity of each pixel in complete image Pixel Information, extract the information source data of LED light source, identify LED light source
Location of pixels in the picture；
Step 2, using cutting techniques LED light source is split from complete image, it is visible to obtain complete LED light source
Optical information obtains the visible optical information of complete LED light source new without changing image pixel size after A/D converter is changed
Image information, to improve the reading speed of imaging sensor；
Step 3, the speed that imaging sensor captures the image of LED light source is improved, the fuselage shake of compensation smart mobile phone causes
Image blur.
Another object of the present invention can be achieved through the following technical solutions：
A kind of smart mobile phone frame rate control system for visible light communication, the system include smart mobile phone shell master
Body, smart mobile phone camera, touch display screen and the hardware circuit in smart mobile phone housing main body；The smart mobile phone
Housing main part side button and touch display screen can be used in the reception capture for controlling smart mobile phone camera to carry out image；It is described
Imaging sensor and digital signal processor are provided with smart mobile phone camera；The hardware circuit is included at electronic operation
Reason device module is simultaneously connected with other peripheral hardwares, and the electronic operation processor module is arranged on smart mobile phone shell master with other peripheral hardwares
On the hardware circuit in internal portion；Target light source LED launches visible light signal, by using the touch display screen or smart mobile phone
Housing main part side sends photographing signals by key control smart mobile phone camera software, and smart mobile phone is controlled by the photographing signals
Imaging sensor in camera, which captures, receives view data, the target light source LED in capture images data, according to complete image
Middle image pixel intensities extract LED information source data, and the location of pixels of identification light source led object in the picture, will using cutting techniques
Pixel comprising the visible light signal data is split, and obtains complete LED visible light data without change data script
Pixel size, the data transfer after segmentation is subjected to reimaging into A/D converter, the size of data for reducing transmission image is come
The output speed of imaging sensor is improved, so as to improve the frame rate of smart mobile phone imaging sensor.
Further, the hardware circuit in the smart mobile phone housing main body includes central processor CPU, at electronic signal
Manage other peripheral hardwares of device module and connection, each functional module and other peripheral hardwares being electrically connected with hardware circuit
Controlled by central processor CPU, control signal is transmitted by transmission line.
Further, the transmission line to ensure between central processor CPU and each peripheral hardware keeps the continuity of impedance simultaneously
And reflex can be eliminated, parallel cabling is used between central processor CPU and each peripheral hardware, it is ensured that data reach center
Processor CPU is close with the time of each peripheral hardware.
Further, the smart mobile phone camera also includes A/D converter module, and imaging sensor will by transmission line
Visible data is transferred to digital signal processor, then signal data is transferred into A/D converter mould by digital signal processor
Block carries out reimaging, is further processed finally by transmission line to software layer；Pass through intelligent hand between each module
Machine camera internal hardware circuit is electrically connected.
The present invention compared with prior art, has the following advantages that and beneficial effect：
1st, the smart mobile phone frame rate control method for visible light communication of the invention, ensureing to capture complete visible ray
While data, the output speed of imaging sensor is improved, so as to improve smart mobile phone frame rate, smart mobile phone is solved and catches
The image blur problem that fuselage shake is brought when obtaining pixel.
2nd, the visible data transmission method in visible light communication technology has been used in combination in the present invention, by light source led
The capture of target, the visible light communication data that LED is sent is obtained, present invention could apply to different environment and occasion, increase
The practicality and novelty of smart mobile phone function.
Brief description of the drawings
Fig. 1 is a kind of structure of smart mobile phone frame rate control system for visible light communication of the embodiment of the present invention 1
Schematic diagram.
Fig. 2 is the influence schematic diagram that the rotation of smart mobile phone fuselage captures pixel to imaging sensor in the embodiment of the present invention 2.
Fig. 3 is the shadow that smart mobile phone fuselage vertical direction movement captures pixel to imaging sensor in the embodiment of the present invention 2
Ring schematic diagram.
Fig. 4 is that the data that imaging sensor is realized in the embodiment of the present invention 2 split schematic diagram.
Fig. 5 is the schematic diagram that imaging sensor continuously captures pixel with frame rate 30fps in the embodiment of the present invention 2.
Fig. 6 is the schematic diagram that imaging sensor continuously captures pixel with frame rate 60fps in the embodiment of the present invention 2.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
Embodiment 1：
Present embodiments provide a kind of smart mobile phone frame rate control system for visible light communication, the knot of the system
Composition is as shown in figure 1, including smart mobile phone housing main body, smart mobile phone camera, touch display screen and installed in smart mobile phone
Hardware circuit in housing main body；The smart mobile phone housing main part side button and touch display screen can be used in control intelligence
Mobile phone camera carries out the reception capture of image；Imaging sensor and data signal are provided with the smart mobile phone camera
Processor；The hardware circuit includes electronic operation processor module and is connected with other peripheral hardwares, the electronic operation processor
Module is arranged on the hardware circuit inside smart mobile phone housing main body with other peripheral hardwares；Target light source LED transmitting visible ray letters
Number, bat is sent by key control smart mobile phone camera software by using the touch display screen or smart mobile phone housing main part side
According to signal, the imaging sensor capture in smart mobile phone camera is controlled to receive view data, capture by the photographing signals
Target light source LED in view data, LED information source data are extracted according to image pixel intensities in complete image, identify light source led pair
As location of pixels in the picture, using cutting techniques, the pixel comprising the visible light signal data is split, obtained
Complete LED visible light data enter the data transfer after segmentation into A/D converter without change data script pixel size
Row reimaging, the size of data for reducing transmission image improves the output speed of imaging sensor, so as to improving smart mobile phone
The frame rate of imaging sensor.
Wherein, the hardware circuit in the smart mobile phone housing main body includes central processor CPU, E-signal processor
Other of module and connection peripheral hardware, each functional module and other peripheral hardwares for being electrically connected with hardware circuit are by
Central processor CPU control, control signal are transmitted by transmission line.To ensure between central processor CPU and each peripheral hardware
Transmission line keep impedance continuity and reflex can be eliminated, adopted between central processor CPU and each peripheral hardware
With parallel cabling, it is ensured that it is close with the time of each peripheral hardware that data reach central processor CPU.
In addition, the smart mobile phone camera also includes A/D converter module, imaging sensor will be seen that by transmission line
Light data is transferred to digital signal processor, then signal data is transferred into A/D converter module by digital signal processor and entered
Row reimaging, it is further processed finally by transmission line to software layer；Taken the photograph between each module by smart mobile phone
As head internal hardware circuit is electrically connected.
Embodiment 2：
A kind of smart mobile phone frame rate control method for visible light communication is present embodiments provided, methods described includes
Following steps：
The image of imaging sensor capture LED light source in step 1, smart mobile phone camera, obtains complete image pixel
Information, and according to the intensity of each pixel in complete image Pixel Information, extract the information source data of LED light source, identify LED light source
Location of pixels in the picture；
Wherein, LED light source sends visible light signal, the touch display screen and smart mobile phone side press-key control intelligence
Mobile phone camera carries out the reception capture of image.As shown in Fig. 2 amplificationization smart mobile phone image sensor architecture, F is intelligent hand
Machine camera focal length, T are distance of the light source to image sensor pixel plane, and F is much smaller than T, when carrying out figure using smart mobile phone
During as capture, perfect stable state can not be accomplished during due to operating handset, the skew for a small θ angle occur, now
The imaging of light source led in the image sensor can send out into distance be L skew, when θ angles are bigger than normal, due to offset distance L across
The number of pixels crossed is more, and the image that will cause to catch obscures.As shown in figure 3, amplificationization smart mobile phone image sensor architecture,
F is smart mobile phone camera focal length, and T is distance of the light source to image sensor pixel plane, and F is much smaller than T, when intelligence uses hand
It can not accomplish perfect stable state when machine carries out image capture, during due to operating handset, the mobile phone machine in a direction occur
Body moves, by taking vertical direction as an example, when handset moves down, due to smart mobile phone cam lens and light source led position
Distance can occur for the change put, the imaging of light source led for the cheap of L, and the image that will also result in seizure obscures.
Further, in order to reduce offset distance L size, it is necessary to increase smart mobile phone imaging sensor reading speed
Degree.Because the bandwidth between imaging sensor and E-signal processor is limited, the quantity of image pixel can only be reduced to improve
The reading speed of handset image sensor.
Step 2, using cutting techniques LED light source is split from complete image, it is visible to obtain complete LED light source
Optical information obtains the visible optical information of complete LED light source new without changing image pixel size after A/D converter is changed
Image information, to improve the reading speed of imaging sensor；
As shown in figure 4, smart mobile phone imaging sensor capture images, information source data are extracted according to image pixel intensities, identification
The location of pixels of light source led comprising visible light communication data in the picture, using image Segmentation Technology, light source led is wrapped
The Pixel Information contained is split, and does not change the pixel size of original image, ensure that the quality of image after segmentation.After segmentation
Image include less pixel data, by the data by transmission line into A/D converter, pass through A/D converter structure
New display image is built, reduces the data bulk of reading, so as to improve the reading speed of imaging sensor.
Step 3, the speed that imaging sensor captures the image of LED light source is improved, the fuselage shake of compensation smart mobile phone causes
Image blur.
Fig. 5 and Fig. 6 is respectively the signal that imaging sensor continuously captures pixel with frame rate 30fps and frame rate 60fps
Figure, it can be seen that improve the frame rate of imaging sensor, that is, improve the frequency of image capture sensor target, reduce imaging point
The distance between L, can compensate smart mobile phone fuselage shake caused by image blur.
It is described above, patent preferred embodiment only of the present invention, but the protection domain of patent of the present invention is not limited to
This, any one skilled in the art is in the scope disclosed in patent of the present invention, according to the skill of patent of the present invention
Art scheme and its patent of invention design are subject to equivalent substitution or change, belong to the protection domain of patent of the present invention.
Claims (5)
1. a kind of smart mobile phone frame rate control method for visible light communication, it is characterised in that methods described includes following
Step：
The image of imaging sensor capture LED light source in step 1, smart mobile phone camera, obtains complete image Pixel Information,
And according to the intensity of each pixel in complete image Pixel Information, the information source data of LED light source are extracted, identify that LED light source is being schemed
Location of pixels as in；
Step 2, using cutting techniques LED light source is split from complete image, obtain complete LED light source visible ray letter
The visible optical information of complete LED light source is obtained new image by breath without changing image pixel size after A/D converter is changed
Information, to improve the reading speed of imaging sensor；
Step 3, improve imaging sensor capture LED light source image speed, caused by compensation smart mobile phone fuselage shake into
As fuzzy.
A kind of 2. smart mobile phone frame rate control system for visible light communication, it is characterised in that：The system includes intelligence
Phone housing main body, smart mobile phone camera, touch display screen and the hardware circuit in smart mobile phone housing main body；Institute
State smart mobile phone housing main part side button and touch display screen can be used in controlling smart mobile phone camera to carry out connecing for image
Catching obtains；Imaging sensor and digital signal processor are provided with the smart mobile phone camera；The hardware circuit bag
Include electronic operation processor module and be connected with other peripheral hardwares, the electronic operation processor module is arranged on intelligence with other peripheral hardwares
On hardware circuit inside energy mobile phone housing main body；Target light source LED launches visible light signal, is shown by using described touch
Screen or smart mobile phone housing main part side send photographing signals by key control smart mobile phone camera software, pass through the photographing signals
Control the imaging sensor in smart mobile phone camera to capture and receive view data, the target light source LED in capture images data,
LED information source data are extracted according to image pixel intensities in complete image, the location of pixels of identification light source led object in the picture, are made
With cutting techniques, the pixel comprising the visible light signal data is split, obtain complete LED visible light data without
Change data script pixel size, the data transfer after segmentation is subjected to reimaging into A/D converter, reduces transmission image
Size of data improve the output speed of imaging sensor, so as to improving the frame rate of smart mobile phone imaging sensor.
3. a kind of smart mobile phone frame rate control system for visible light communication according to claim 2, its feature exist
In：Hardware circuit in the smart mobile phone housing main body includes central processor CPU, E-signal processor module and company
Other peripheral hardwares connect, each functional module and other peripheral hardwares for being electrically connected with hardware circuit are by central processing unit
CPU control, control signal are transmitted by transmission line.
4. a kind of smart mobile phone frame rate control system for visible light communication according to claim 3, its feature exist
In：Transmission line to ensure between central processor CPU and each peripheral hardware keeps the continuity of impedance and can eliminate reflection
Phenomenon, parallel cabling is used between central processor CPU and each peripheral hardware, it is ensured that data reach central processor CPU with it is each
The time of individual peripheral hardware is close.
5. a kind of smart mobile phone frame rate control system for visible light communication according to claim 2, its feature exist
In：The smart mobile phone camera also includes A/D converter module, and imaging sensor will be seen that light data is transmitted by transmission line
To digital signal processor, then signal data is transferred to A/D converter module by digital signal processor and carries out reimaging,
It is further processed finally by transmission line to software layer；Pass through smart mobile phone camera internal hardware between each module
Circuit is electrically connected.
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| CN201710771950.8A CN107395987A (en) | 2017-08-31 | 2017-08-31 | A kind of smart mobile phone frame rate control method and system for visible light communication |
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| WO2019134176A1 (en) * | 2018-01-08 | 2019-07-11 | 华为技术有限公司 | Camera communication method and device |
| WO2020047859A1 (en) * | 2018-09-07 | 2020-03-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Electronic apparatus, image correction method, and non-transitory computer-readable recording medium |
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