CN107194301A - A kind of recognition methods of Quick Response Code and device - Google Patents
A kind of recognition methods of Quick Response Code and device Download PDFInfo
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- CN107194301A CN107194301A CN201610145981.8A CN201610145981A CN107194301A CN 107194301 A CN107194301 A CN 107194301A CN 201610145981 A CN201610145981 A CN 201610145981A CN 107194301 A CN107194301 A CN 107194301A
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- 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
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- 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
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
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Abstract
The invention discloses a kind of recognition methods of Quick Response Code, including：The images to be recognized of Quick Response Code of the collection comprising luminescence display；The position sensing figure in the images to be recognized is extracted, the two-dimentional code position in the images to be recognized is determined according to the position sensing figure, and recognize the Quick Response Code in the two-dimentional code position.The present invention further simultaneously discloses a kind of identifying device of Quick Response Code.
Description
Technical field
The present invention relates to recognition methods and the device of image identification technical field, more particularly to a kind of Quick Response Code.
Background technology
With the rapid development of information technology, increasing difference information media is used widely, two dimension
Code (Two-dimensional code) is as a kind of simple, low cost and propagates convenient new medium,
Nowadays it is seen everywhere in miscellaneous work and living scene.Quick Response Code, also known as two-dimensional bar code, be
The chequered with black and white figure being distributed according to certain rules in plane (two-dimensional directional) with specific geometric figure.
In addition, the coding of Quick Response Code dexterously make use of " 0 ", " 1 " bit for constituting computer-internal logical foundations
The concept of stream, the geometrical body corresponding with binary system using several represents word numerical information, passes through
The terminal automatically identifying and reading such as image input device or photoelectric scanning device, to realize automatically processing for information.
Compared with one-dimension code, Quick Response Code is a kind of barcode standard of higher level.Because one-dimension code can only be at one
Storage information on direction (generally horizontal direction), and Quick Response Code can be deposited in level, vertical direction
Store up information；One-dimension code can only be made up of numeral and letter, and Quick Response Code can store Chinese character, numeral and picture
Etc. information, therefore, the application field of Quick Response Code is much broader, such as：Product false proof/trace to the source, advertisement pushing,
Web site url, data download, positioning/navigation, electronic certificate, vehicle management, information transmission etc..
Found by the retrieval to related Quick Response Code identification technology and investigation：Current Quick Response Code identification scene is big
Be confined to it is passive it is luminous in the case of, i.e., typically do not pasting Quick Response Code on luminous object surface, and two-dimentional
Substantially all it is according to following handling process although the recognition methods of code is a lot：Image gray processing, image increase
By force, image filtering processing, uneven illumination processing, binaryzation, rim detection, framing, image rectification
With distortion correction etc..Wherein, image gray processing is that the colour picture of shooting is converted into gray level image, should
Processing procedure can eliminate the color information in colour picture, reduce the complexity of subsequent treatment；Image filtering
It is a very important link in Quick Response Code identification process, the Gauss produced in acquisition image process can be made an uproar
Sound, salt-pepper noise etc. are filtered out, it is to avoid influence of the noise to decoding, and then improve discrimination；Binaryzation is choosing
Suitable threshold value is taken, gray level image is transformed into the binary image of only " 0 " and " 1 "；Image calibration
Exactly utilization space position relationship, will not just etc. disturb the image rectification of decoding factor because of shooting angle is water
Flat, image that is being easy to decoding.
By above-mentioned handling process, can quickly and accuracy rate recognizes have general Quick Response Code higher,
And for how to recognize the Quick Response Code actively lighted under scene, good solution is not yet proposed at present.It is special
Not, as light emitting diode (LED, Light Emitting Diode) is used as the general of new generation of green light source
And, LED by high brightness, low-power consumption, the long-life, it is fast start, without stroboscopic, do not allow to be also easy to produce vision it is tired
The advantages of labor, traditional electricity-saving lamp and incandescent lamp is gradually replaced, shone as green that is of greatest concern and praising highly
Bright technology.In addition, because LED also has response time short and High Speed Modulation characteristic, shining it
While bright, moreover it is possible to applied to visible light communication and indoor positioning etc..Therefore, shown based on LED array
Quick Response Code is obtained for application in many occasions.
Fig. 1 is given by the image in 2 D code of LED array active luminescence display, as shown in figure 1, due to list
The luminous aperture of individual LED lamp bead influences whether neighbouring LED, and general LED array is because of dense degree
Not enough, the display effect of granular sensation can be formed, and because of the control bright dark refresh rates of LED and the exposure of shooting
Time is uncoordinated, can produce random stripe.These unfavorable factors can all make to utilize ordinary two dimensional code identification side
Method come recognize the Quick Response Code under the scene that actively lights difficulty increase, so as to cause the read access time of Quick Response Code to become
It is long, or can not correctly read the Quick Response Code.
Meanwhile, in order to take into account illumination functions, the brightness of LED array in actual applications is general higher, therefore,
It is exposed with common camera, it is easy to overexposure phenomenon occur.In addition, common Quick Response Code identification software
Sweep and sweep such as wechat, simply the simple camera borrowed in cell phone system application, can not be to the light of camera
The parameters such as circle, focal length are adjusted, so will not automatically be adjusted according to actual light intensity as common photograph scene
Save exposure mode etc..So, it will so that a piece of light of two-dimension code area, it is more likely that None- identified is read
The Quick Response Code.Therefore, how quickly and accurately to recognize by the Quick Response Code of LED array active luminescence display,
It is urgent problem to be solved.
The content of the invention
In view of this, the embodiment of the present invention is expected to provide recognition methods and the device of a kind of Quick Response Code, can be fast
Speed, recognize exactly by the Quick Response Code of LED array active luminescence display, improve the effect for reading 2 D code information
Rate, so that the use for lifting user is perceived.
To reach above-mentioned purpose, what the technical scheme of the embodiment of the present invention was realized in：
The embodiment of the present invention provides a kind of recognition methods of Quick Response Code, and methods described includes：
The images to be recognized of Quick Response Code of the collection comprising luminescence display；
The position sensing figure in the images to be recognized is extracted, according to being determined the position sensing figure
Two-dimentional code position in images to be recognized, and recognize the Quick Response Code in the two-dimentional code position.
In such scheme, the images to be recognized of the Quick Response Code of the collection comprising luminescence display includes：
The mode of operation of selection identification Quick Response Code；
The bottom of the terminal camera of identification Quick Response Code is accessed and called according to the mode of operation of the selection, is adjusted
Whole sweep parameter, and the images to be recognized is gathered using the corresponding Exposure Metering of mode of operation of the selection.
In such scheme, wait to know described in the corresponding Exposure Metering collection of the mode of operation using the selection
Other image, including：
When the mode of operation of the selection is single Quick Response Code recognition mode, read using central heavy spot light-metering mode
Quick Response Code in the images to be recognized, the two-dimension code area of black and white is highlighted, and by the back of the body beyond Quick Response Code
Scene area is blurred；
When the mode of operation of the selection is many Quick Response Code recognition modes, read using average metering mode described
Quick Response Code in images to be recognized, and special pre-treatment is carried out to the Quick Response Code.
It is described to Quick Response Code progress special pre-treatment in such scheme, including：Detection is described to include two
The Luminance Distribution of the images to be recognized of code is tieed up, respective handling is carried out according to different Luminance Distributions.
In such scheme, the Luminance Distribution of the images to be recognized comprising Quick Response Code described in the detection, according to not
Same Luminance Distribution carries out respective handling, including：
If the position sensing figure meets the geometry site of Quick Response Code, and different two-dimension code areas is bright
Notable difference is distributed with degree, then determines multiple two-dimension code areas successively according to brightness degree；
If the Luminance Distribution no significant difference of different two-dimension code areas, by all position sensing figures of extraction
A set is classified as, appoints and takes three position sensing figures in set to carry out permutation and combination, detect every kind of arrangement
Whether combination meets certain condition, and determines two-dimension code area according to the permutation and combination for the condition that meets.
In such scheme, whether the every kind of permutation and combination of detection meets certain condition, including：
According to the black and white saltus step rule of the Quick Response Code, water-filling is entered respectively centered on relevant position detection figure
Square to the detection with vertical direction, the arrangement for the position sensing figure for not meeting black and white saltus step rule is filtered out
Combination.
In such scheme, after the two-dimentional code position in the determination images to be recognized, methods described
Also include：
Quick Response Code in the two-dimentional code position is pre-processed, will be carried out by pretreated Quick Response Code
Decoding obtains corresponding information；
Wherein, the pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to the Quick Response Code
Quick Response Code in position is corrected.
In such scheme, the Quick Response Code is the Quick Response Code shown based on LED array.
The embodiment of the present invention also provides a kind of identifying device of Quick Response Code, and described device includes：Acquisition module,
Identification module；Wherein,
The acquisition module, the images to be recognized for gathering the Quick Response Code comprising luminescence display；
The identification module, for extracting the position sensing figure in the images to be recognized, according to institute's rheme
Put detection figure and determine two-dimentional code position in the images to be recognized, and recognize in the two-dimentional code position
Quick Response Code.
In such scheme, the images to be recognized of the Quick Response Code of the acquisition module collection comprising luminescence display includes：
The mode of operation of selection identification Quick Response Code；
The bottom of the terminal camera of identification Quick Response Code is accessed and called according to the mode of operation of the selection, is adjusted
Whole sweep parameter, and the images to be recognized is gathered using the corresponding Exposure Metering of mode of operation of the selection.
In such scheme, the acquisition module is gathered using the corresponding Exposure Metering of mode of operation of the selection
The images to be recognized, including：
When the mode of operation of the selection is single Quick Response Code recognition mode, read using central heavy spot light-metering mode
Quick Response Code in the images to be recognized, the two-dimension code area of black and white is highlighted, and by the back of the body beyond Quick Response Code
Scene area is blurred；
When the mode of operation of the selection is many Quick Response Code recognition modes, read using average metering mode described
Quick Response Code in images to be recognized, and special pre-treatment is carried out to the Quick Response Code.
It is described to Quick Response Code progress special pre-treatment in such scheme, including：Detection is described to include two
The Luminance Distribution of the images to be recognized of code is tieed up, respective handling is carried out according to different Luminance Distributions.
In such scheme, the Luminance Distribution of the images to be recognized comprising Quick Response Code described in the detection, according to not
Same Luminance Distribution carries out respective handling, including：
If the position sensing figure meets the geometry site of Quick Response Code, and different two-dimension code areas is bright
Notable difference is distributed with degree, then determines multiple two-dimension code areas successively according to brightness degree；
If the Luminance Distribution no significant difference of different two-dimension code areas, by all position sensing figures of extraction
A set is classified as, appoints and takes three position sensing figures in set to carry out permutation and combination, detect every kind of arrangement
Whether combination meets certain condition, and determines two-dimension code area according to the permutation and combination for the condition that meets.
In such scheme, whether the every kind of permutation and combination of detection meets certain condition, including：
According to the black and white saltus step rule of the Quick Response Code, water-filling is entered respectively centered on relevant position detection figure
Square to the detection with vertical direction, the arrangement for the position sensing figure for not meeting black and white saltus step rule is filtered out
Combination.
In such scheme, described device also includes：
Pretreatment module, for determining the images to be recognized in the identification module in two-dimentional code position it
Afterwards, the Quick Response Code in the two-dimentional code position is pre-processed；
Decoder module, phase is obtained for that will enter row decoding by the pretreated Quick Response Code of the pretreatment module
Answer information；
Wherein, the pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to the Quick Response Code
Quick Response Code in position is corrected.
In such scheme, the Quick Response Code is the Quick Response Code shown based on LED array.
The recognition methods for the Quick Response Code that the embodiment of the present invention is provided and device, collection include the two of luminescence display
Tie up the images to be recognized of code；The position sensing figure in the images to be recognized is extracted, is visited according to the position
Mapping shape determines the two-dimentional code position in the images to be recognized, and recognizes the two dimension in the two-dimentional code position
Code.In this way, according to the difference of the mean flow rate of different two-dimension code areas, to using the collection of different Exposure Meterings
Images to be recognized in Quick Response Code carry out respective handling, the Quick Response Code shown based on LED array can be recognized；
Further, the mode of operation adjustment for the identification Quick Response Code that the embodiment of the present invention can also be selected for user is follow-up
Respective handling, is quickly and accurately recognized using different processing modes and single or multiple is shown by LED array
Quick Response Code, with higher recognition efficiency, thus lifted user use perceive, to Quick Response Code recognize skill
The development of art is significant.
Brief description of the drawings
Fig. 1 is the image in 2 D code of the invention by LED array active luminescence display；
Fig. 2 is the implementation process schematic diagram of the recognition methods of Quick Response Code of the embodiment of the present invention；
Fig. 3 is the system flow schematic diagram for the recognition methods that the embodiment of the present invention implements Quick Response Code；
Fig. 4 is the composition structural representation of the identifying device of Quick Response Code of the embodiment of the present invention.
Embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings
Realization to the embodiment of the present invention is described in detail, appended accompanying drawing purposes of discussion only for reference, is not used for
Limit the present invention.
As shown in Fig. 2 in the embodiment of the present invention recognition methods of Quick Response Code implementation process, including following step
Suddenly：
Step 201：The images to be recognized of Quick Response Code of the collection comprising luminescence display；
Wherein, the Quick Response Code is the Quick Response Code shown based on LED array.
This step 201 is specifically included：
The mode of operation of selection identification Quick Response Code；
The bottom of the terminal camera of identification Quick Response Code is accessed and called according to the mode of operation of the selection, is adjusted
Whole sweep parameter, and the images to be recognized is gathered using the corresponding Exposure Metering of mode of operation of the selection.
Wherein, the sweep parameter includes：Aperture, focal length, Exposure mode.
Here, the mode of operation of the identification Quick Response Code of the selection includes：Single Quick Response Code recognition mode and many two
Tie up code recognition mode；User can be pre-selected according to practical application request in Quick Response Code barcode scanning application software
It is the single Quick Response Code of identification, or recognizes many Quick Response Codes, facilitates second terminal to be adjusted according to different mode of operations
Whole follow-up respective handling, i.e.,：The single Quick Response Code of selection identification, is subsequently just identified the processing of single Quick Response Code；
The many Quick Response Codes of selection identification, are subsequently just identified the processing of many Quick Response Codes.
Here, the terminal of two-dimensional code display is first terminal, and the terminal of identification Quick Response Code is second terminal, institute
It both can be wireless terminal or catv terminal to state second terminal, wherein, wireless terminal can refer to
Provide a user the equipment of voice and/or data connectivity, the portable equipment with wireless connecting function or
It is connected to other processing equipments of radio modem.
In the embodiment of the present invention, pass through field programmable gate array (FPGA, Field-Programmable Gate
Array) program is individually modulated to each LED lamp bead, can obtain what is characterized with different gray values
Black and white module in Quick Response Code.Here, individually modulation specifically how is carried out to each LED lamp bead and belongs to existing
There is technology, will not be repeated here.
Here, the corresponding Exposure Metering of the mode of operation using the selection gathers the images to be recognized,
Specifically include：
If the mode of operation of the identification Quick Response Code of selection is single Quick Response Code recognition mode, surveyed using central emphasis
Light mode reads the Quick Response Code in the images to be recognized, and the two-dimension code area of black and white is highlighted, and by two dimension
Background area virtualization beyond code；This way it is possible to avoid cause halation to obscure because LED array brightness is too high,
The black and white module of Quick Response Code can not be differentiated so that whole image is rendered as the two dimension for having one piece of black and white in black matrix
Code region, the identification and reading of very convenient Quick Response Code.In this case, it is almost not unnecessary in image
Information, is calculated without carrying out numerous and diverse filtering, only need to can accurately be decoded by basic pretreatment.Therefore,
The read method of the Quick Response Code has faster speed and accuracy.
Wherein, the basic pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to described
Quick Response Code in two-dimentional code position is corrected.
If the mode of operation of the identification Quick Response Code of selection is many Quick Response Code recognition modes, due to multiple Quick Response Codes
In the case of be not in brightness monopole effect, and Luminance Distribution under multiple LED array illumination tends to average
Change, be not in overexposure phenomenon, therefore the Quick Response Code in the images to be recognized is read using average metering mode,
And special pre-treatment is carried out to the Quick Response Code.
Here, can be different according to the Luminance Distribution of two-dimension code area, it is multiple under the scene that actively lights to distinguish
Different Quick Response Codes.
Wherein, it is described to Quick Response Code progress special pre-treatment, including：Quick Response Code is included described in detection
The Luminance Distribution of images to be recognized, respective handling is carried out according to different Luminance Distributions；
Specifically, if the position sensing figure meets the geometry site of Quick Response Code, and different Quick Response Codes
The Luminance Distribution in region has notable difference, then determines multiple two-dimension code areas successively according to brightness degree；
If the Luminance Distribution no significant difference of different two-dimension code areas, by all position sensing figures of extraction
A set is classified as, appoints and takes three position sensing figures in set to carry out permutation and combination, detect every kind of arrangement
Whether combination meets certain condition, and determines two-dimension code area according to the permutation and combination for the condition that meets.
Here, the certain condition of the satisfaction is meets black and white saltus step rule, the when Quick Response Code is being recognized
One terminal can not meet above-mentioned condition, the position sensing of second terminal just in images to be recognized described in None- identified
Figure, or the pseudo- position sensing figure similar to position sensing figure is mistakenly identified, and then cause two
Tie up positioning and the recognition failures of code.Wherein, the pseudo- position sensing figure is probably due to shooting condition, LED
What the limitation of the factors such as luminous intensity was produced, therefore, the position sensing figure extracted is filtered, i.e.,：
The permutation and combination for the position sensing figure for not meeting black and white saltus step rule is filtered out, in the images to be recognized
The position of Quick Response Code be accurately positioned and play an important roll.
Specifically, whether the every kind of permutation and combination of detection meets certain condition, including：According to the two dimension
The black and white saltus step rule of code, centered on relevant position detection figure, carries out horizontal direction and Vertical Square respectively
To detection, filter out the permutation and combination for the position sensing figure for not meeting black and white saltus step rule.
Here, in image procossing, brightness can generally be represented by gray scale, therefore can utilize gray level image
Region division substantially is done according to brightness to whole images to be recognized, under average illumination level can be obtained successively
Several pieces of regions of drop, i.e., every piece region one Quick Response Code of correspondence.Wherein, gray processing is carried out to images to be recognized
During, weighted mean method can be used, gray level image is transformed into.In addition, in the process of gray processing
In, the rgb value for extracting each gray level image pixel is also characterized into monochrome information.
It should be noted that in Quick Response Code, by taking quick response (QR, Quick Response) code as an example,
In any three corners in four corners of QR codes, the square pattern that less picture " returns " word is printed on,
I.e. position sensing figure, can be seen that in Fig. 1.These three position sensing figures are for decoding software positioning
Pattern, meets the geometry site of certain triangle, for example, three positions of each QR code
Detection figure is put respectively on three summits of QR codes, composition isosceles right triangle.Second terminal is led to
Cross view-finder to obtain after images to be recognized, images to be recognized is searched for according to the distinctive black and white saltus step rule of Quick Response Code
Interior position sensing figure, as existing two-dimensional code identification method, you can by three position sensing figures
(such as QR codes is three-back-shaped) determines the edge and profile of Quick Response Code.Here, it is specifically how to determine two
The edge and profile for tieing up code belong to prior art, will not be repeated here.
Here, when user needs to recognize Quick Response Code by second terminal, it is preferable that can be used with shooting
The terminal collection of camera function includes the images to be recognized of Quick Response Code；The Quick Response Code barcode scanning application software used can
According to the mode of operation of selected identification Quick Response Code, the bottom of second terminal such as mobile phone camera is accessed and calls,
Such as parameter such as aperture, focal length is adjusted, and changes the Exposure mode of camera.
In actual applications, it can specifically be imaged according in the Quick Response Code and second terminal shown based on LED array
The factor such as the distance between camera, comes in the spatial relation and the Quick Response Code and second terminal of head
The bottom parameter of camera is adjusted, and changes the Exposure mode of camera.Here, specifically how bottom is adjusted
Parameter and change Exposure mode belong to prior art, will not be repeated here.
Step 202：The position sensing figure in the images to be recognized is extracted, according to the position sensing figure
Shape determines the two-dimentional code position in the images to be recognized, and recognizes the Quick Response Code in the two-dimentional code position.
In step 202., after the two-dimentional code position in the determination images to be recognized, the side
Method can also include：Quick Response Code in the two-dimentional code position is pre-processed, will be passed through pretreated
Quick Response Code enters row decoding and obtains corresponding information.
Wherein, the pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to the Quick Response Code
Quick Response Code in position is corrected.
Here, it is contemplated that LED display halation can form edge sawtooth and as caused by dot matrix screen
Grain sense, can use histogram-fitting calculating threshold value, and reduce its using big window medium filtering influences.
Further, it is also possible to be corrected according to not spatial alternation is breathed out to Quick Response Code.Here, said process is specifically such as
What, which was realized, belongs to prior art, will not be repeated here.
Fig. 3 shows the implementation process signal of the specific embodiment of the recognition methods of Quick Response Code of the present invention, such as schemes
Shown in 3, the embodiment comprises the steps：
Step 301：The mode of operation of user's selection identification Quick Response Code；
Here, the Quick Response Code is the Quick Response Code shown based on LED array, wherein, LED array lights
Display belongs to one kind of active luminescence display, is different from existing most passive luminescence display, i.e., general
Quick Response Code is not pasted on luminous object surface.
Step 302：The type of the mode of operation of the selection is differentiated, if the mode of operation of the selection is single
Quick Response Code recognition mode, then perform step 303, otherwise performs step 304；
Here, the mode of operation of the identification Quick Response Code of user's selection is divided into two types：Single Quick Response Code recognizes mould
Formula and many Quick Response Code recognition modes；User can be according to practical application request, in Quick Response Code barcode scanning application software
It is the single Quick Response Code of identification to be pre-selected, or recognizes many Quick Response Codes, then according to different recognition modes, is adjusted
It is whole follow-up the step of need to perform.
Step 303：The Quick Response Code in images to be recognized is read using central heavy spot light-metering mode, by black and white
Two-dimension code area is highlighted, and the background area beyond Quick Response Code is blurred；
Here, using the method for the step 303, a two dimension shown by LED array can quickly be recognized
Code, it is not necessary to which extra processing procedure allows for the two dimension that whole image is rendered as having one piece of black and white in black matrix
Code region, the identification and reading of very convenient Quick Response Code.
Step 304：The Quick Response Code in images to be recognized is read using average metering mode, and to the two dimension
Code carries out the pretreatment such as step 305；
Step 305：The Luminance Distribution of images to be recognized of the detection comprising Quick Response Code；
Here, can be different according to the Luminance Distribution of two-dimension code area, it is multiple under the scene that actively lights to distinguish
Different Quick Response Codes.
Step 306：If the Luminance Distribution difference of different two-dimension code areas is larger, step 307 is performed；
Here, it is necessary to which a precondition, i.e., the position sensing figure of described different two-dimension code areas meets
The geometry site of Quick Response Code.
Step 307：Determine multiple two-dimension code areas successively according to brightness degree, terminate this handling process；
Step 308：If the Luminance Distribution difference of different two-dimension code areas is smaller, step 309 is performed；
Step 309：All position sensing figures of extraction are classified as a set, appoint three taken in set
Position sensing figure carries out permutation and combination, detects whether every kind of permutation and combination meets certain condition, and according to full
The permutation and combination of sufficient condition determines two-dimension code area.
Here, whether the every kind of permutation and combination of detection meets certain condition, including：
According to the black and white saltus step rule of the Quick Response Code, water-filling is entered respectively centered on relevant position detection figure
Square to the detection with vertical direction, the arrangement for the position sensing figure for not meeting black and white saltus step rule is filtered out
Combination.
Wherein, the certain condition of the satisfaction is the black and white saltus step rule for meeting Quick Response Code.
What the embodiment of the present invention was proposed is a kind of two-dimensional code identification method for actively lighting under scene, as
In the application example by LED array two-dimensional code display, the image caused by LED illumination effect is avoided that
The interference that fringe phenomena etc. caused by inappropriate time for exposure is caused to decoding when granular sensation, shooting, is opened up
The wide application scenarios of Quick Response Code identification technology, improve read rate of the Quick Response Code under complex scene；Enter one
Step ground, the embodiment of the present invention is according to Luminance Distribution different in images to be recognized, moreover it is possible to different Working moulds
Formula reads single Quick Response Code or multiple Quick Response Codes, and image acquisition mode is adjusted according to user's request, can accelerate single
The reading speed of individual Quick Response Code, and have higher reading efficiency to the identification of many Quick Response Codes.
To realize the above method, the embodiment of the present invention additionally provides a kind of identifying device of Quick Response Code, such as Fig. 4
Shown, the device includes acquisition module 41, identification module 42；Wherein,
The acquisition module 41, the images to be recognized for gathering the Quick Response Code comprising luminescence display；
The identification module 42, for extracting the position sensing figure in the images to be recognized, according to described
Position sensing figure determines the two-dimentional code position in the images to be recognized, and recognizes in the two-dimentional code position
Quick Response Code.
Wherein, the Quick Response Code is the Quick Response Code shown based on LED array.
Here, described device also includes：Pretreatment module 43, for determining institute in the identification module 42
State after the two-dimentional code position in images to be recognized, the Quick Response Code in the two-dimentional code position is pre-processed；
Decoder module 44, for row decoding will to be entered by the pretreated Quick Response Code of the pretreatment module 43
Obtain corresponding information.
Wherein, the pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to the Quick Response Code
Quick Response Code in position is corrected.
Here, the images to be recognized of the Quick Response Code of the collection of acquisition module 41 comprising luminescence display includes：
The mode of operation of selection identification Quick Response Code；
The bottom of the terminal camera of identification Quick Response Code is accessed and called according to the mode of operation of the selection, is adjusted
Whole sweep parameter, and the images to be recognized is gathered using the corresponding Exposure Metering of mode of operation of the selection.
Wherein, the acquisition module 41 is described using the corresponding Exposure Metering collection of mode of operation of the selection
Images to be recognized, including：
When the mode of operation of the selection is single Quick Response Code recognition mode, read using central heavy spot light-metering mode
Quick Response Code in the images to be recognized, the two-dimension code area of black and white is highlighted, and by the back of the body beyond Quick Response Code
Scene area is blurred；
When the mode of operation of the selection is many Quick Response Code recognition modes, read using average metering mode described
Quick Response Code in images to be recognized, and special pre-treatment is carried out to the Quick Response Code.
Here, it is described to Quick Response Code progress special pre-treatment, including：Quick Response Code is included described in detection
The Luminance Distribution of images to be recognized, respective handling is carried out according to different Luminance Distributions.
Specifically, if the position sensing figure meets the geometry site of Quick Response Code, and different Quick Response Codes
The Luminance Distribution in region has notable difference, then determines multiple two-dimension code areas successively according to brightness degree；
If the Luminance Distribution no significant difference of different two-dimension code areas, by all position sensing figures of extraction
A set is classified as, appoints and takes three position sensing figures in set to carry out permutation and combination, detect every kind of arrangement
Whether combination meets certain condition, and determines two-dimension code area according to the permutation and combination for the condition that meets.
Wherein, whether the every kind of permutation and combination of detection meets certain condition, including：
According to the black and white saltus step rule of the Quick Response Code, water-filling is entered respectively centered on relevant position detection figure
Square to the detection with vertical direction, the arrangement for the position sensing figure for not meeting black and white saltus step rule is filtered out
Combination.
In actual applications, the acquisition module 41, identification module 42, pretreatment module 43, decoding mould
Block 44 can be by central processing unit (CPU, the Central Processing in the terminal of two-dimensional code display
Unit), microprocessor (MPU, Micro Processor Unit), digital signal processor (DSP, Digital
Signal Processor) or field programmable gate array (FPGA, Field Programmable Gate Array)
Deng realization.
The images to be recognized of Quick Response Code of the collection of the embodiment of the present invention comprising luminescence display；Extract described to be identified
Position sensing figure in image, the two dimension in the images to be recognized is determined according to the position sensing figure
Code position, and recognize the Quick Response Code in the two-dimentional code position.In this way, according to the flat of different two-dimension code areas
The difference of equal brightness, corresponding position is carried out to the Quick Response Code in the images to be recognized using the collection of different Exposure Meterings
Reason, can recognize the Quick Response Code shown based on LED array；Further, the embodiment of the present invention can also be for using
The mode of operation of the identification Quick Response Code of family selection adjusts follow-up respective handling, using different processing modes it is quick,
The single or multiple Quick Response Codes shown by LED array are recognized exactly, with higher recognition efficiency, so that
The use for lifting user is perceived, and the development to Quick Response Code identification technology is significant.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the protection model of the present invention
Enclose, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc. all should
Within protection scope of the present invention.
Claims (16)
1. a kind of recognition methods of Quick Response Code, it is characterised in that methods described includes：
The images to be recognized of Quick Response Code of the collection comprising luminescence display；
The position sensing figure in the images to be recognized is extracted, according to being determined the position sensing figure
Two-dimentional code position in images to be recognized, and recognize the Quick Response Code in the two-dimentional code position.
2. according to the method described in claim 1, it is characterised in that the collection includes the two of luminescence display
The images to be recognized of dimension code includes：
The mode of operation of selection identification Quick Response Code；
The bottom of the terminal camera of identification Quick Response Code is accessed and called according to the mode of operation of the selection, is adjusted
Whole sweep parameter, and the images to be recognized is gathered using the corresponding Exposure Metering of mode of operation of the selection.
3. method according to claim 2, it is characterised in that the Working mould using the selection
The corresponding Exposure Metering of formula gathers the images to be recognized, including：
When the mode of operation of the selection is single Quick Response Code recognition mode, read using central heavy spot light-metering mode
Quick Response Code in the images to be recognized, the two-dimension code area of black and white is highlighted, and by the back of the body beyond Quick Response Code
Scene area is blurred；
When the mode of operation of the selection is many Quick Response Code recognition modes, read using average metering mode described
Quick Response Code in images to be recognized, and special pre-treatment is carried out to the Quick Response Code.
4. method according to claim 3, it is characterised in that described special to Quick Response Code progress
Pretreatment, including：The Luminance Distribution of the detection images to be recognized comprising Quick Response Code, according to different bright
Degree distribution carries out respective handling.
5. method according to claim 4, it is characterised in that Quick Response Code is included described in the detection
The Luminance Distribution of images to be recognized, respective handling is carried out according to different Luminance Distributions, including：
If the position sensing figure meets the geometry site of Quick Response Code, and different two-dimension code areas is bright
Notable difference is distributed with degree, then determines multiple two-dimension code areas successively according to brightness degree；
If the Luminance Distribution no significant difference of different two-dimension code areas, by all position sensing figures of extraction
A set is classified as, appoints and takes three position sensing figures in set to carry out permutation and combination, detect every kind of arrangement
Whether combination meets certain condition, and determines two-dimension code area according to the permutation and combination for the condition that meets.
6. method according to claim 5, it is characterised in that whether the every kind of permutation and combination of detection
Certain condition is met, including：
According to the black and white saltus step rule of the Quick Response Code, water-filling is entered respectively centered on relevant position detection figure
Square to the detection with vertical direction, the arrangement for the position sensing figure for not meeting black and white saltus step rule is filtered out
Combination.
7. according to the method described in claim 1, it is characterised in that determine the images to be recognized described
In two-dimentional code position after, methods described also includes：
Quick Response Code in the two-dimentional code position is pre-processed, will be carried out by pretreated Quick Response Code
Decoding obtains corresponding information；
Wherein, the pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to the Quick Response Code
Quick Response Code in position is corrected.
8. the method according to any one of claim 1 to 7, it is characterised in that the Quick Response Code is base
The Quick Response Code shown in LED array.
9. a kind of identifying device of Quick Response Code, it is characterised in that described device includes：Acquisition module, identification
Module；Wherein,
The acquisition module, the images to be recognized for gathering the Quick Response Code comprising luminescence display；
The identification module, for extracting the position sensing figure in the images to be recognized, according to institute's rheme
Put detection figure and determine two-dimentional code position in the images to be recognized, and recognize in the two-dimentional code position
Quick Response Code.
10. device according to claim 9, it is characterised in that the acquisition module collection includes hair
The images to be recognized for the Quick Response Code that light is shown includes：
The mode of operation of selection identification Quick Response Code；
The bottom of the terminal camera of identification Quick Response Code is accessed and called according to the mode of operation of the selection, is adjusted
Whole sweep parameter, and the images to be recognized is gathered using the corresponding Exposure Metering of mode of operation of the selection.
11. device according to claim 10, it is characterised in that the acquisition module uses the choosing
The corresponding Exposure Metering of mode of operation selected gathers the images to be recognized, including：
When the mode of operation of the selection is single Quick Response Code recognition mode, read using central heavy spot light-metering mode
Quick Response Code in the images to be recognized, the two-dimension code area of black and white is highlighted, and by the back of the body beyond Quick Response Code
Scene area is blurred；
When the mode of operation of the selection is many Quick Response Code recognition modes, read using average metering mode described
Quick Response Code in images to be recognized, and special pre-treatment is carried out to the Quick Response Code.
12. device according to claim 11, it is characterised in that described that spy is carried out to the Quick Response Code
Different pretreatment, including：The Luminance Distribution of the detection images to be recognized comprising Quick Response Code, according to different
Luminance Distribution carries out respective handling.
13. device according to claim 12, it is characterised in that Quick Response Code is included described in the detection
Images to be recognized Luminance Distribution, respective handling is carried out according to different Luminance Distribution, including：
If the position sensing figure meets the geometry site of Quick Response Code, and different two-dimension code areas is bright
Notable difference is distributed with degree, then determines multiple two-dimension code areas successively according to brightness degree；
If the Luminance Distribution no significant difference of different two-dimension code areas, by all position sensing figures of extraction
A set is classified as, appoints and takes three position sensing figures in set to carry out permutation and combination, detect every kind of arrangement
Whether combination meets certain condition, and determines two-dimension code area according to the permutation and combination for the condition that meets.
14. device according to claim 13, it is characterised in that the every kind of permutation and combination of detection is
It is no to meet certain condition, including：
According to the black and white saltus step rule of the Quick Response Code, water-filling is entered respectively centered on relevant position detection figure
Square to the detection with vertical direction, the arrangement for the position sensing figure for not meeting black and white saltus step rule is filtered out
Combination.
15. device according to claim 9, it is characterised in that described device also includes：
Pretreatment module, for determining the images to be recognized in the identification module in two-dimentional code position it
Afterwards, the Quick Response Code in the two-dimentional code position is pre-processed；
Decoder module, phase is obtained for that will enter row decoding by the pretreated Quick Response Code of the pretreatment module
Answer information；
Wherein, the pretreatment includes：Filter out the noise of interference Quick Response Code decoding and to the Quick Response Code
Quick Response Code in position is corrected.
16. the device according to any one of claim 9 to 15, it is characterised in that the Quick Response Code is
The Quick Response Code shown based on LED array.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145981.8A CN107194301A (en) | 2016-03-15 | 2016-03-15 | A kind of recognition methods of Quick Response Code and device |
| PCT/CN2016/105732 WO2017157034A1 (en) | 2016-03-15 | 2016-11-14 | Method, device, and storage medium for identifying two-dimensional code |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145981.8A CN107194301A (en) | 2016-03-15 | 2016-03-15 | A kind of recognition methods of Quick Response Code and device |
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| CN107194301A true CN107194301A (en) | 2017-09-22 |
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| CN201610145981.8A Withdrawn CN107194301A (en) | 2016-03-15 | 2016-03-15 | A kind of recognition methods of Quick Response Code and device |
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| WO (1) | WO2017157034A1 (en) |
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| CN110475079A (en) * | 2019-09-10 | 2019-11-19 | 上海快仓智能科技有限公司 | A kind of image exposure luminance regulating method, system and associated component |
| WO2020057583A1 (en) * | 2018-09-20 | 2020-03-26 | Gmkw Technology Wuxi Co., Ltd. | Luminescent symbol and method for fixing luminescent symbol to tangible object |
| CN111488751A (en) * | 2019-01-29 | 2020-08-04 | 北京骑胜科技有限公司 | Two-dimensional code image processing method and device, electronic equipment and storage medium |
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| WO2017157034A1 (en) | 2017-09-21 |
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