CN106845301A - A kind of binocular bar code reading facility suitable for arc container - Google Patents
A kind of binocular bar code reading facility suitable for arc container Download PDFInfo
- Publication number
- CN106845301A CN106845301A CN201611263035.XA CN201611263035A CN106845301A CN 106845301 A CN106845301 A CN 106845301A CN 201611263035 A CN201611263035 A CN 201611263035A CN 106845301 A CN106845301 A CN 106845301A
- Authority
- CN
- China
- Prior art keywords
- bar code
- rotation
- camera
- plane
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
- G06K7/1456—Methods for optical code recognition including a method step for retrieval of the optical code determining the orientation of the optical code with respect to the reader and correcting therefore
-
- 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
- G06K7/1491—Methods for optical code recognition the method including quality enhancement steps the method including a reconstruction step, e.g. stitching two pieces of bar code together to derive the full bar code
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Image Processing (AREA)
Abstract
The invention provides a kind of binocular bar code reading facility suitable for arc container, including：Two rotatable planes, are provided with a camera and an infrared distance measurement module on each Plane of rotation, two cameras are respectively used to bar code image of the collection in arc container first area and second area；Two infrared distance measurement modules are respectively used to measure the distance of corresponding Plane of rotation and arc container surface, and control corresponding Plane of rotation to stop the rotation when corresponding Plane of rotation is detected with the distance minimum of arc container；Recognizing apparatus also include processor, for carrying out the correction of bar code column width to the first bar code image and the second bar code image with the first bar code image and the second bar code image after being corrected respectively, and two spoke barcode images after correction are carried out into splicing obtain complete target bar image, the present invention can solve the problem that the recognition problem of bar code on arc container, improve the bar code recognition success rate on arc container.
Description
Technical field
The present invention relates to bar code recognition field, and in particular to a kind of binocular bar code recognition suitable for arc container sets
It is standby.
Background technology
Bar code is arranged according to certain coding rule, can express the graphical identifier of customizing messages, is widely used in business
In product mark and the process of circulation.The expression of information needs to be scanned through to be swept with two processes of decoding, wherein bar code in bar code
The quality retouched directly determines the success or failure of decoding.
For the bar code being attached on square container, bar code does not interfere with decoding effect substantially without any distortion during scanning
Really；And the bar code being attached on arc container is directed to, especially when container arc is larger, bar code can occur seriously during scanning
Deformation, has a strong impact on decoding effect.To avoid the problem, current bar code would generally be longitudinally attached on arcuation container, or is set
The length for counting bar code is much smaller than arc container girth, and so when its transverse direction is attached on container, crooked radian is unlikely to influence
Decoding effect.
Above method is the main flow solution for solving bar code scan on arc container, but beautiful for some pursuit designs
See, or nonpipeline standardized production commodity, however it remains the possibility that bar code is laterally adhered on arc container.Work as bar code
Length is more long and in the case that arc container radius is shorter, and recognizing apparatus obtain bar, sky in bar code image in bar code scanning
Ratio regular meeting Deng element changes, if deformation is serious, decoding will produce mistake or operation failure.
The content of the invention
For defect of the prior art, set the invention provides a kind of binocular bar code recognition suitable for arc container
Standby, the present invention can solve the problem that on arc container bar code recognition problem, improves on arc container the identification of bar code or is decoded into
Power.
Specifically, the invention provides following technical scheme：
A kind of binocular bar code reading facility suitable for arc container, the binocular bar code that should be applied to arc container is known
Reading equipment is used to distinguish the bar code being attached on arc container, and the recognizing apparatus include：It is arranged on the recognition
Equipment back side and positioned at same horizontal line and at a distance of two rotatable planes of predeterminable range, respectively the first Plane of rotation and the
Two Plane of rotations, are provided with a varifocal camera and an infrared distance measurement module, respectively first on each Plane of rotation
Camera, the first infrared distance measurement module, second camera and the second infrared distance measurement module；Wherein, first camera is used for
First bar code image of the collection in arc container first area, the second camera is used to gather positioned at arc container
Second bar code image of second area；Wherein, positioned at first area bar code and the bar code positioned at second area are present
Overlapping region and the bar code positioned at first area and the bar code positioned at second area collectively form complete target bar；
First infrared distance measurement module and second infrared distance measurement module are respectively used to measure corresponding Plane of rotation with arc appearance
The distance on device surface, and control corresponding Plane of rotation when corresponding Plane of rotation is detected with the distance minimum of arc container
Stop the rotation；
The recognizing apparatus also include processor, and the processor is respectively to the first bar shaped of first camera collection
After code image and the second bar code image of second camera collection carry out bar code column width correction to be corrected
The first bar code image and correct after the second bar code image, and by correction after the first bar code image and correct after
Second bar code image carries out splicing and obtains complete target bar image；
The processor is additionally operable to that the complete bar code image for obtaining is carried out bar code recognition to be translated accordingly
Code result.
Further, the recognizing apparatus also include display screen, and the display location is used in the front of the recognizing apparatus
In the complete bar code image of display and corresponding decoding result.
Further, the processor includes：Image rectification unit and image mosaic unit；
Described image correct unit, for according to the radian of arc container respectively to the first bar code image and the second bar shaped
Code image carries out the correction by column of bar code column width, and after respectively obtaining the first bar code image after correcting and correcting second
Bar code image；
Described image concatenation unit, for obtaining the first bar code image after correcting and the second bar code figure after correction
The overlapping region of picture, and based on the overlapping region to correction after the first bar code image and correct after the second bar code figure
As carrying out splicing, obtain correcting spliced bar code image.
Further, described image is corrected unit and is included：Parameter acquisition module and bar code column width correct module；
The parameter acquisition module, for according to the distance between the first camera and second camera, the first rotary flat
The first distance between face and arc container or the second distance between the second Plane of rotation and arc container, and the first rotation
The anglec of rotation of the anglec of rotation of plane or the second Plane of rotation obtains arc container radius；Wherein, the first Plane of rotation and arc
Describe that the first distance between device is distance when the first Plane of rotation is minimum with arc container distance, the second Plane of rotation and arc
Distance when describing that the second distance between device is the second Plane of rotation minimum with arc container distance；
The bar code column width corrects module, and the arc container radius for being obtained according to the parameter acquisition module is pressed
Correct formula according to default column width carries out bar code column width to the first bar code image and the second bar code image respectively
Correct by column, the first bar code image and the second bar code image after being corrected；Wherein, to the first bar code image or
When second bar code image carries out the correction of bar code column width, opened with the first camera or second camera central point column
Begin, carry out bar code column width correction by column to both sides.
Further, the parameter acquisition module is used to obtain arc container radius according to equation below one：
R=(d2/2)/cosC-d1 formula one
Wherein, d2 represents the distance between the first camera and second camera；D1 represents the first Plane of rotation and arc
The first distance between container or the second distance between the second Plane of rotation and arc container；C=90 ° of-C1, C1It is the first rotation
Turn the anglec of rotation of plane or the anglec of rotation of the second Plane of rotation.
Further, the default column width correction formula is：
Wherein, the first camera or second camera are being carried out the bar code projection on arc container when bar code is distinguished
Onto imaging plane, d2 represents the actual width of bar code row, the modified strip that d1 is projected on imaging plane when representing that bar code is gathered
Code column width, d1 represents the distance that the first camera or second camera central point are arranged to bar code to be corrected, and A represents arc container
Radius of circle angle folded between surface point and the first camera or second camera central point, B represent arc container surface point with
Angle between imaging plane, r represents arc container radius.
Further, described image concatenation unit includes：Adjusting module, determining module and concatenation module；
The adjusting module, adjusts for the first bar code image and the second bar code image after correction after by correction
Center position to same level and guarantee two images keeps constant；
The determining module, the overlapping region for determining the two images after adjustment；
The two images are spliced by the concatenation module for the image information according to the overlapping region.
Further, the determining module, the overlay region for determining the two images after adjustment according to equation below three
Domain：
D3=2* (d/2-d2/2)=d-d2 formula three
Wherein, d3 represents the length of the overlapping region of two images, and d2 is represented between the first camera and second camera
Distance；D represents the areas imaging of the first camera or second camera, and the areas imaging is open and flat on imaging plane
Bar code image width.
As shown from the above technical solution, the binocular bar code reading facility suitable for arc container that the present invention is provided, base
The varifocal camera being arranged side by side in two, catches the left and right region of bar code on arc container, and two are imaged respectively
Head obtains image and is corrected respectively, eliminates radian to obtaining the influence of image, on the basis of image rectification, then is taken the photograph by two
As the overlapping region of head, two images are spliced, so that for decoding provides comparatively ideal bar code image.It can be seen that the present invention
Bar code recognition problem on arc container is can solve the problem that, the recognition success rate of bar code on arc container is improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the backside structure of the binocular bar code reading facility suitable for arc container that one embodiment of the invention is provided
Schematic diagram；
Fig. 2 is the Facad structure of the binocular bar code reading facility suitable for arc container that one embodiment of the invention is provided
Schematic diagram；
Fig. 3 is the relative position schematic diagram of the recognizing apparatus that one embodiment of the invention is provided and arc container；
Fig. 4 is that the bar code column width that one embodiment of the invention is provided corrects schematic diagram；
Fig. 5 is the first camera and second camera imaging relations schematic diagram that one embodiment of the invention is provided.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 shows the back side of the binocular bar code reading facility suitable for arc container that one embodiment of the invention is provided
Structural representation.Wherein, 1 device body is represented, 2 represent infrared distance measurement module, and 3 represent camera, and 4 represent Plane of rotation.Its
In, infrared distance measurement module, camera and Plane of rotation or so are each provided with one respectively, individually below referred to as the first infrared distance measurement
Module, the second infrared distance measurement module, the first camera, second camera, the first Plane of rotation, the second Plane of rotation.
Binocular bar code reading facility provided in an embodiment of the present invention is used to enter the bar code being attached on arc container
Row recognition, referring to Fig. 1, the recognizing apparatus include：It is arranged on the recognizing apparatus back side and positioned at same horizontal line and apart
Two rotatable planes of predeterminable range, respectively the first Plane of rotation and the second Plane of rotation, are set on each Plane of rotation
There are a varifocal camera and an infrared distance measurement module, respectively the first camera, the first infrared distance measurement module, second are taken the photograph
As head and the second infrared distance measurement module；Wherein, first camera is used to gather the in the arc container first area
One bar code image, the second camera is used to gather the second bar code image positioned at arc container second area；Wherein,
There is overlapping region and positioned at the bar code of first area in the bar code positioned at first area and the bar code positioned at second area
Complete target bar is collectively formed with the bar code positioned at second area；First infrared distance measurement module and described second
Infrared distance measurement module is respectively used to measure the distance of corresponding Plane of rotation and arc container surface, and is detecting corresponding rotation
Turn to control corresponding Plane of rotation to stop the rotation when plane is minimum with the distance of arc container；
It is understood that two infrared distance measurement modules are respectively used to measure corresponding Plane of rotation in the current anglec of rotation
The lower distance with arc container surface of degree, i.e., for detecting corresponding Plane of rotation, whether the diameter with arc container mutually hangs down
Directly；Two cameras are used to obtain correspondence bar code image within the vision；Two Plane of rotations are mainly used in fixed correspondence
Camera and infrared distance measurement module, Plane of rotation can transverse rotation, the camera being fixed thereon and infrared distance measurement module
Rotate with.
It can be seen that, the recognizing apparatus that the present embodiment is provided are by setting infrared distance measurement module, rotation where dynamic adjustment camera
Turn plane, search and the most short angle of arc container surface distance, make Plane of rotation all the time perpendicular to the arc container arcuation center of circle
With the line of camera position.
For example, when being distinguished to the bar code on arc container using the recognizing apparatus, by the recognizing apparatus
Bar code on horizontal aligument arc container, the recognizing apparatus can control corresponding Plane of rotation left rotation and right rotation, rotary course
Middle infrared distance measurement module test constantly Plane of rotation and the distance on arc container surface, such as become big, then Plane of rotation apart from lasting
Reversely rotate；As distance persistently diminishes, then it continues to rotate, until the angle of both distance Plane of rotations most in short-term of locking,
This angle is also Plane of rotation and the perpendicular position of vessel radius.
Further, the recognizing apparatus also include processor, and the processor is gathered to first camera respectively
The first bar code image and the second camera collection the second bar code image carry out the correction of bar code column width with
The first bar code image after being corrected and the second bar code image after correcting, and by correction after the first bar code image
Splicing is carried out with the second bar code image after correction obtain complete target bar image；
The processor is additionally operable to that the complete bar code image for obtaining is carried out bar code recognition to be translated accordingly
Code result.
Seen from the above description, the binocular bar code reading facility suitable for arc container provided in an embodiment of the present invention,
Based on two varifocal cameras being arranged side by side, the left and right region of bar code on arc container is caught respectively, and two are taken the photograph
Corrected respectively as head obtains image, radian is eliminated to obtaining the influence of image, on the basis of image rectification, then by two
Two images are spliced by the overlapping region of camera, so that for decoding provides comparatively ideal bar code image.It can be seen that this hair
Bright embodiment can solve the problem that bar code recognition problem on arc container, improve the recognition success rate of bar code on arc container.
In a kind of optional embodiment, referring to Fig. 2, the recognizing apparatus also include display screen 5, the display screen 5
In the front of the recognizing apparatus, for showing complete bar code image and corresponding decoding result.
In a kind of optional embodiment, the processor includes：Image rectification unit and image mosaic unit；
Described image correct unit, for according to the radian of arc container respectively to the first bar code image and the second bar shaped
Code image carries out the correction by column of bar code column width, and after respectively obtaining the first bar code image after correcting and correcting second
Bar code image；
Described image concatenation unit, for obtaining the first bar code image after correcting and the second bar code figure after correction
The overlapping region of picture, and based on the overlapping region to correction after the first bar code image and correct after the second bar code figure
As carrying out splicing, obtain correcting spliced bar code image.
In a kind of optional embodiment, described image corrects unit to be included：Parameter acquisition module and bar code column width
Correct module；
The parameter acquisition module, for according to the distance between the first camera and second camera, the first rotary flat
The first distance between face and arc container or the second distance between the second Plane of rotation and arc container, and the first rotation
The anglec of rotation of the anglec of rotation of plane or the second Plane of rotation obtains arc container radius；Wherein, the first Plane of rotation and arc
Describe that the first distance between device is distance when the first Plane of rotation is minimum with arc container distance, the second Plane of rotation and arc
Distance when describing that the second distance between device is the second Plane of rotation minimum with arc container distance；
The bar code column width corrects module, and the arc container radius for being obtained according to the parameter acquisition module is pressed
Correct formula according to default column width carries out bar code column width to the first bar code image and the second bar code image respectively
Correct by column, the first bar code image and the second bar code image after being corrected；Wherein, to the first bar code image or
When second bar code image carries out the correction of bar code column width, opened with the first camera or second camera central point column
Begin, carry out bar code column width correction by column to both sides.
In a kind of optional embodiment, the parameter acquisition module can be used to obtain arc container according to equation below one
Radius：
R=(d2/2)/cosC-d1 formula one
Wherein, d2 represents the distance between the first camera and second camera；D1 represents the first Plane of rotation and arc
The first distance between container or the second distance between the second Plane of rotation and arc container；C=90 ° of-C1, C1It is the first rotation
Turn the anglec of rotation of plane or the anglec of rotation of the second Plane of rotation.
In a kind of optional embodiment, the default column width is corrected formula and can use equation below two：
Wherein, the first camera or second camera are being carried out the bar code projection on arc container when bar code is distinguished
Onto imaging plane, d2 represents the actual width of bar code row, the modified strip that d1 is projected on imaging plane when representing that bar code is gathered
Code column width, d1 represents the distance that the first camera or second camera central point are arranged to bar code to be corrected, and A represents arc container
Radius of circle angle folded between surface point and the first camera or second camera central point, B represent arc container surface point with
Angle between imaging plane, r represents arc container radius.
The work of unit is corrected to described image with reference to the location diagram shown in Fig. 3 and Fig. 4 and correction schematic diagram
Process is explained in detail explanation.
After recognizing apparatus lock two Plane of rotation positions, Plane of rotation, device body are relative between arc container
Position relationship is as shown in Figure 3.Fig. 3 represents top view during equipment operation, and 8 is device body in figure, and 7 is Plane of rotation, left and right
Each one, 9 is the connecting shaft of Plane of rotation and device body, and 6 is arc container, in addition, all dotted lines are not represented and appointed in Fig. 3
What is in kind.
According to relative position in figure, the radius of arc container can be calculated.Due to connecting shaft control Plane of rotation rotation, so
The angle at B angles is, it is known that according to angled complimentary principle, then C angles angle is equal to B angles angle, another aspect, Plane of rotation and appearance in figure
Being obtained by range finder module apart from d1 between device surface, meanwhile, apart from d2 it is fixed between two cameras, in summary become
Amount, then understand arc container radius r=(d2/2)/cosC-d1, and angle A=180-2*C folded by two radiuses.
Said process is mainly camera angle is adjusted, and obtains the relevant parameter of arc container, is to correct bar
Shape code is prepared.Because there is certain angle in plane where camera and arc container surface, from camera central point more away from
Arc container surface portion, be deformed can be bigger when image is obtained, i.e., the parts of images can narrow, therefore, the present invention is real
Image segmentation that example obtains camera is applied into several columns, image is corrected by column with reference to radian value, to recover each column figure
The normal width of picture.Wherein, the relation between actual bar code and the bar code image of acquisition is as shown in Figure 4.
As shown in figure 4, camera is by the surface projection of arc container 6 to imaging plane 10.D3 is camera center in figure
To the distance of bar code image to be corrected row, A is radius of circle angle folded between arc container surface point and camera central point to point,
B is the angle between arc container surface point and imaging plane, and d2 is the actual width of normal bar code image column width or bar code row,
And d1 is to project to the deformation bar code image column width on imaging plane when bar code is gathered, the solution formula of d2 as the following formula two
It is shown.
As shown in formula two above, the original that can obtain the vessel surface bar code image corresponding with image column d1 positions is wide
Degree, is started with camera central point column, according to above-mentioned formula two, image is corrected by column to both sides respectively, finally
Bar code on curved surface can be transformed into plane 11.By above procedure, can correct respectively acquired in two cameras in left and right
Bar code part.
It can be seen that, recognizing apparatus provided in an embodiment of the present invention for deformation bar code image, using being corrected by column
Differential method, arranged as base unit with the image after deformation, to close the row corresponding to segmental arc angle, by the bar shaped in cambered surface
Code is transformed into plane.
In a kind of optional embodiment, described image concatenation unit includes：Adjusting module, determining module and splicing mould
Block；
The adjusting module, adjusts for the first bar code image and the second bar code image after correction after by correction
Center position to same level and guarantee two images keeps constant；
The determining module, the overlapping region for determining the two images after adjustment；
In a kind of optional embodiment, the determining module, for determining two width after adjustment according to equation below three
The overlapping region of image：
D3=2* (d/2-d2/2)=d-d2 formula three
Wherein, d3 represents the length of the overlapping region of two images, and d2 is represented between the first camera and second camera
Distance；D represents the areas imaging of the first camera or second camera, and the areas imaging is open and flat on imaging plane
Bar code image width.
The two images are spliced by the concatenation module for the image information according to the overlapping region.
The course of work of described image concatenation unit is solved in detail with reference to the imaging relations schematic diagram shown in Fig. 5
Release explanation.
Because bar code is obtained jointly by two cameras of left and right respectively, camera presence fails that whole bar code is completely covered
The possibility in region, need to determine the overlapping region of left and right bar code image according to the areas imaging of left and right camera, carry out both
Splicing.
In the bar code of above-mentioned image rectification unit corrects step, with camera center line as start line, respectively to two
Side is corrected to image column, and bar code image is the open and flat two spoke barcode images on imaging plane after correction, therefore,
The angle of two imaging planes can be adjusted in splicing, both is in same level, and two center positions are protected
Hold constant, two camera imaging relations are as shown in Figure 5 after adjustment.
As shown in Figure 5, the length d3 of the overlapping region of two cameras acquisition bar code image can be by two camera central points
Between apart from d2, and the areas imaging d of camera is obtained, and areas imaging is that the open and flat bar code image on imaging plane is wide
Degree, then the length computation of overlapping region is as the following formula shown in three.
D3=2* (d/2-d2/2)=d-d2 formula three
It is determined that behind overlapping region, you can two images are spliced according to the overlapping region, bar code figure after splicing
As can be directly used for decoding.Picture traverse problem is all referred in other said process, for convenience of describing, developed width is referred both to,
The width can by being imaged when image distance and image distance calculate and obtain.
From the technical scheme recorded above, a kind of binocular bar suitable for arc container is the embodiment of the invention provides
Shape code recognizing apparatus, the bar code for solving to be affixed transversely to arc container surface distinguishes problem.The embodiment of the present invention is provided
Recognizing apparatus first by camera lens adjust, radian detect operation obtain container parameters, then by get parms to deform bar
Barcode image is corrected, and finally the bar code image after correction is spliced, to eliminate the shadow that radian is distinguished to bar code
Ring.It can be seen that, recognizing apparatus provided in an embodiment of the present invention overcome traditional recognizing apparatus be difficult interpretation be affixed transversely to arc appearance
The shortcoming of bar code on device, improves the success rate of bar code decoding.
In the description of the invention, it is necessary to explanation, term " on ", the orientation of the instruction such as D score or position relationship be base
In orientation shown in the drawings or position relationship, it is for only for ease of and describes of the invention and simplify description, rather than instruction or hint
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of invention.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should be interpreted broadly, example
Such as, can be fixedly connected, or be detachably connected, or be integrally connected；Can mechanically connect, or be electrically connected
Connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two connections of element internal.For this
For the those of ordinary skill in field, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
Also, it should be noted that herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and between not necessarily requiring or implying these entities or operate
There is any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to contain
Lid nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Above example is merely to illustrate technical scheme, rather than its limitations；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (8)
1. a kind of binocular bar code reading facility suitable for arc container, it is characterised in that the double of arc container should be applied to
Mesh bar code reading facility is used to distinguish the bar code being attached on arc container, and the recognizing apparatus include：Set
At the recognizing apparatus back side and positioned at same horizontal line and at a distance of two rotatable planes of predeterminable range, the respectively first rotation
Turn plane and the second Plane of rotation, a varifocal camera and an infrared distance measurement module be provided with each Plane of rotation,
Respectively the first camera, the first infrared distance measurement module, second camera and the second infrared distance measurement module；Wherein, described first
Camera is used to gather the first bar code image in arc container first area, and the second camera is used to gather position
In the second bar code image of arc container second area；Wherein, positioned at the bar code of first area and positioned at second area
There is overlapping region in bar code and the bar code positioned at first area and the bar code positioned at second area collectively form it is complete
Target bar；First infrared distance measurement module and second infrared distance measurement module are respectively used to measure corresponding rotary flat
Face and the distance on arc container surface, and control is corresponding when corresponding Plane of rotation is detected with the distance minimum of arc container
Plane of rotation stop the rotation；
The recognizing apparatus also include processor, and the processor is respectively to the first bar code figure of first camera collection
As and the second bar code image of second camera collection carry out the correction of bar code column width with the after being corrected
One bar code image and correct after the second bar code image, and by correction after the first bar code image and correct after second
Bar code image carries out splicing and obtains complete target bar image；
The processor is additionally operable to carry out bar code recognition to the complete bar code image for obtaining obtain corresponding decoding knot
Really.
2. recognizing apparatus according to claim 1, it is characterised in that the recognizing apparatus also include display screen, described aobvious
Display screen is located at the front of the recognizing apparatus, for showing complete bar code image and corresponding decoding result.
3. recognizing apparatus according to claim 1, it is characterised in that the processor includes：Image rectification unit and figure
As concatenation unit；
Described image correct unit, for according to the radian of arc container respectively to the first bar code image and the second bar code figure
Correction by column as carrying out bar code column width, the second bar shaped after respectively obtaining the first bar code image after correcting and correcting
Code image；
Described image concatenation unit, for obtaining the first bar code image after correcting and correcting after second bar code image
Overlapping region, and based on the overlapping region to correction after the first bar code image and correct after the second bar code image enter
Row splicing, obtains correcting spliced bar code image.
4. recognizing apparatus according to claim 3, it is characterised in that described image corrects unit to be included：Parameter acquiring mould
Block and bar code column width correct module；
The parameter acquisition module, for according to the distance between the first camera and second camera, the first Plane of rotation with
The first distance between arc container or the second distance between the second Plane of rotation and arc container, and the first Plane of rotation
The anglec of rotation or the second Plane of rotation the anglec of rotation obtain arc container radius；Wherein, the first Plane of rotation holds with arc
The first distance between device is distance when the first Plane of rotation is minimum with arc container distance, and the second Plane of rotation holds with arc
Distance when second distance between device is the second Plane of rotation minimum with arc container distance；
The bar code column width corrects module, for the arc container radius that is obtained according to the parameter acquisition module according to pre-
If column width correct formula bar code column width is carried out by column to the first bar code image and the second bar code image respectively
Correct, the first bar code image and the second bar code image after being corrected；Wherein, to the first bar code image or second
When bar code image carries out the correction of bar code column width, started with the first camera or second camera central point column, to
Both sides carry out bar code column width correction by column.
5. recognizing apparatus according to claim 4, it is characterised in that the parameter acquisition module is used for according to equation below
One obtains arc container radius：
R=(d2/2)/cosC-d1 formula one
Wherein, d2 represents the distance between the first camera and second camera；D1 represents the first Plane of rotation and arc container
Between first distance or the second distance between the second Plane of rotation and arc container；C=90 ° of-C1, C1It is the first rotary flat
The anglec of rotation of the anglec of rotation in face or the second Plane of rotation.
6. recognizing apparatus according to claim 4 or 5, it is characterised in that the default column width is corrected formula and is：
Wherein, the first camera or second camera project into the bar code on arc container when bar code is distinguished
In image plane, d2 represents the actual width of bar code row, the deformation bar code row that d1 is projected on imaging plane when representing that bar code is gathered
Width, d1 represents the distance that the first camera or second camera central point are arranged to bar code to be corrected, and A represents arc container surface
Folded radius of circle angle between point and the first camera or second camera central point, B represents arc container surface point with imaging
The angle of interplanar, r represents arc container radius.
7. recognizing apparatus according to claim 3, it is characterised in that described image concatenation unit includes：Adjusting module, really
Cover half block and concatenation module；
The adjusting module, the second bar code image for the first bar code image after by correction and after correcting is adjusted to same
The center position of one horizontal plane and guarantee two images keeps constant；
The determining module, the overlapping region for determining the two images after adjustment；
The two images are spliced by the concatenation module for the image information according to the overlapping region.
8. recognizing apparatus according to claim 7, it is characterised in that the determining module, for according to equation below three
It is determined that the overlapping region of the two images after adjustment：
D3=2* (d/2-d2/2)=d-d2 formula three
Wherein, d3 represents the length of the overlapping region of two images, d2 represent between the first camera and second camera away from
From；D represents the areas imaging of the first camera or second camera, and the areas imaging is the open and flat bar shaped on imaging plane
Code picture traverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263035.XA CN106845301B (en) | 2016-12-30 | 2016-12-30 | A kind of binocular bar code reading facility suitable for arc container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263035.XA CN106845301B (en) | 2016-12-30 | 2016-12-30 | A kind of binocular bar code reading facility suitable for arc container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106845301A true CN106845301A (en) | 2017-06-13 |
| CN106845301B CN106845301B (en) | 2019-04-02 |
Family
ID=59113829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611263035.XA Active CN106845301B (en) | 2016-12-30 | 2016-12-30 | A kind of binocular bar code reading facility suitable for arc container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106845301B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345817A (en) * | 2018-02-06 | 2018-07-31 | 徐州智融图像科技有限公司 | A kind of recognition methods of cylindrical surface Quick Response Code |
| CN109376566A (en) * | 2018-12-12 | 2019-02-22 | 福州金典工业产品设计有限公司 | Reading code wall and its setting method based on array camera |
| CN109903038A (en) * | 2019-02-17 | 2019-06-18 | 北京意锐新创科技有限公司 | The two dimensional code method of payment and device that multi information is superimposed under complex background |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140029796A1 (en) * | 2011-02-28 | 2014-01-30 | Datalogic Ip Tech S.R.L. | Method for the optical identification of objects in motion |
| CN105374008A (en) * | 2015-12-11 | 2016-03-02 | 北京印刷学院 | Prep-deformation method for two-dimensional code on cylindrical surface |
| CN205103845U (en) * | 2015-10-28 | 2016-03-23 | 上海聚虹光电科技有限公司 | Two mesh iris image acquisition devices of every single move formula |
-
2016
- 2016-12-30 CN CN201611263035.XA patent/CN106845301B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140029796A1 (en) * | 2011-02-28 | 2014-01-30 | Datalogic Ip Tech S.R.L. | Method for the optical identification of objects in motion |
| CN205103845U (en) * | 2015-10-28 | 2016-03-23 | 上海聚虹光电科技有限公司 | Two mesh iris image acquisition devices of every single move formula |
| CN105374008A (en) * | 2015-12-11 | 2016-03-02 | 北京印刷学院 | Prep-deformation method for two-dimensional code on cylindrical surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345817A (en) * | 2018-02-06 | 2018-07-31 | 徐州智融图像科技有限公司 | A kind of recognition methods of cylindrical surface Quick Response Code |
| CN109376566A (en) * | 2018-12-12 | 2019-02-22 | 福州金典工业产品设计有限公司 | Reading code wall and its setting method based on array camera |
| CN109903038A (en) * | 2019-02-17 | 2019-06-18 | 北京意锐新创科技有限公司 | The two dimensional code method of payment and device that multi information is superimposed under complex background |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106845301B (en) | 2019-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106412426A (en) | Omni-focus photographing apparatus and method | |
| CN103198487B (en) | A kind of automatic marking method for video monitoring system | |
| CN105118055B (en) | Camera position amendment scaling method and system | |
| CN105957007B (en) | Image split-joint method based on characteristic point plane similarity | |
| CN103558910B (en) | A kind of intelligent display system of automatic tracking head pose | |
| CN110000784B (en) | Robot recharging positioning navigation method, system, equipment and storage medium | |
| CN109064404A (en) | It is a kind of based on polyphaser calibration panorama mosaic method, panoramic mosaic system | |
| CN109598762A (en) | A kind of high-precision binocular camera scaling method | |
| CN107907048A (en) | A kind of binocular stereo vision method for three-dimensional measurement based on line-structured light scanning | |
| US20010026684A1 (en) | Aid for panoramic image creation | |
| US8428313B2 (en) | Object image correction apparatus and method for object identification | |
| CN106485275A (en) | A kind of cover-plate glass of realizing positions, with liquid crystal display screen, the method fitted | |
| CN105957015A (en) | Thread bucket interior wall image 360 DEG panorama mosaicing method and system | |
| CN102509093B (en) | Close-range digital certificate information acquisition system | |
| CN106845301A (en) | A kind of binocular bar code reading facility suitable for arc container | |
| CN103902953B (en) | A kind of screen detecting system and method | |
| CN101697105A (en) | Camera type touch detection positioning method and camera type touch detection system | |
| CN109949728B (en) | Detection apparatus for display panel | |
| CN103842259A (en) | Device and method for aligning containers | |
| CN106657789A (en) | Thread panoramic image synthesis method | |
| CN109146833A (en) | A kind of joining method of video image, device, terminal device and storage medium | |
| US11843865B2 (en) | Method and device for generating vehicle panoramic surround view image | |
| CN109089025A (en) | A kind of image instrument digital focus method based on optical field imaging technology | |
| CN110287913A (en) | Image flame detection reminding method and device, user terminal and storage medium | |
| CN110033407A (en) | A kind of shield tunnel surface image scaling method, joining method and splicing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |