CN106446749A - Optical label shooting and optical label decoding relay work method - Google Patents
Optical label shooting and optical label decoding relay work method Download PDFInfo
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- CN106446749A CN106446749A CN201610785061.2A CN201610785061A CN106446749A CN 106446749 A CN106446749 A CN 106446749A CN 201610785061 A CN201610785061 A CN 201610785061A CN 106446749 A CN106446749 A CN 106446749A
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- 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
- G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image
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Abstract
The invention provides an optical label shooting and optical label decoding relay work method. An optical label comprises two parts, i.e., a signal unit group or a "data bit" for short and a positioning identification or a "flag bit" for short. Through converting the shooting frequency of shooting equipment and eliminating a motion displacement image of the equipment, an optical label and a background image are simultaneously acquired, and alignment and superposing synthesis of two kinds of shooting image content are realized. Data transmission of the optical label is guaranteed, the background image where the optical label is disposed is also reserved, onsite experience of a user in using the optical label is improved, and the method solves the problems which cannot be solved by other label ( such as two-dimensional codes and bar-codes) methods.
Description
Technical field
The present invention relates to optical label, and in particular to a kind of optical label shoots and optical label decodes relay method of work.
Background technology
Optical label is operated on higher rate of scanning, and the background image around which needs relatively low rate of scanning
Collection.If only gathering optical label data message, the background information relied on by which will be lost；, whereas if only collection is carried on the back
Scape image information, then optical label also just lose and use meaning.Therefore, the collection of two kinds of picture materials be taken into account, it is necessary to carry
Go out a kind of rational mode of operation or method while being acquired to them, and reach that loss information is minimum, distortionless mesh
Mark.
Content of the invention
It is an object of the invention to overcoming prior art defect, a kind of optical label being provided and is shot and optical label decoding relay work
Make method, realize to gathering while optical label and background image, and realize the alignment of two kinds of shooting image contents, superposition to close
Become.
For reaching above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of optical label shoots and optical label decodes relay method of work, and optical label includes signal element group or is referred to as
" data bit " and positioning mark or referred to as " flag bit " two parts, positioning mark is flashed with certain Frequency Synchronization, and shooting sets
Standby detection positioning mark determines the position of signal element, so as to carrying out data identification and reading；Each signal element represents numeral
" 0 " or " 1 " of signal, the matrix of whole signal element group composition constitutes the digital signal sequences of a frame；
Optical label shoots and optical label decodes relay method of work, and concrete grammar is as follows：
Step one：Optical label Scan orientation is carried out, is found the optical label in positioning scene and obtain its position coordinates；Pass through
Optical label identification equipment (2-1) collection multiframe label image, finds the positioning mark of optical label identification equipment (2-1), further
Its coordinate position in whole image is obtained, remembers the coordinate for (x1,y1)；
Step 2：Optical label content is read, Decoding Analysis frame by frame are carried out to optical label video data；
The picture-taken frequency that optical label is recognized equipment (2-1) heightens optical label data acquisition state, i.e., per frame it
Between collection duration be equal to optical label flicker frequency inverse；Optical label identification equipment (2-1) is with the cycle as m, and circulation is broadcasted
Content, it is assumed that the moment now is t1, the m frame tagging image of whole a cycles of collection, it is designated as：f0', f1' ..., fm', profit
Signal element group is obtained with positioning mark obtained above, by arbitrary frame fi' image signal element group according to dividing elements, 0
≤ i≤m, obtains the digital signal value per unit, then obtains fi' frame optical label data sequence, be designated as Xi；, method acquisition according to this
f1' ..., fm' shown by data, be combined into complete optical label identification equipment (2-1) and broadcast content；
Step 3：Shooting background picture material：
The picture-taken frequency that optical label is recognized equipment (2-1) turns down image taking state, i.e. adopting between every frame
The collection time is more than the flicker frequency of optical label；Moment now is t2, the multiframe label image of collection, it is designated as：f0", f1" ...,
fm”；
Step 4：Carry out optical label Scan orientation again, find the optical label in positioning scene and its position coordinates is obtained,
Its method is identical with one method of above-mentioned steps, obtains position coordinateses of the optical label in current window, is expressed as (x2,y2)；
Step 5：Carry out optical label to be aligned with background image, due to time t1To t2Very of short duration, optical label identification is set
The movement of standby (2-1) is considered as linear uniform motion, then the mobile distance of optical label identification equipment (2-1) is (x1,y1) to (x2,
y2) distance, direction be (x1,y1) to (x2,y2) reverse, then take (x1,y1) to (x2,y2) point midway for alignment basic point, should
Point is in t1(the x of moment image coordinate system1+(x2-x1)/2,y1+(y2-y1)/2) place；Will be in t1Moment optical label recognizes equipment (2-
1) display screen image is with point (x1+(x2-x1)/2,y1+(y2-y1)/2) it is center, largest square is taken for background, not foot
Divide and ignore, then by optical label and its coded information also with (x1+(x2-x1)/2,y1+(y2-y1)/2) point centered on, Overlapping display
On Background.
Further, the step one, carrying out optical label Scan orientation method is：Optical label identification equipment (2-1) is according to certainly
Body natural frequency continuous acquisition multiframe label image, is designated as：f0, f1..., fm, m is that natural number, consecutive frame acquisition time is not less than
The time interval that optical label position identifiers flashes twice；Adjacent any two frame is made the difference and gets differential chart, until poor
Value in figure finds the positioning mark of optical label identification equipment (2-1), obtains its coordinate position in whole image further, note
The coordinate is (x1,y1).
Further, the signal element of optical label is the little square of rectangle black and white between positioning mark, multiple signal element structures
Become one group, the array of signal element composition 5 × 5, each signal element represents " 0 " or " 1 " of digital signal, whole signal element
The matrix of group composition constitutes the digital signal sequences of a frame.
Further, each signal element of optical label is flashed according to predetermined program, and more signal contents are passed through
Multiframe shows, provides start frame/end of identification frame in multiframe, for demarcating the beginning/stop bits of one complete cycle of multiframe
Put.
The present invention can be solved using same picture pick-up device, be close to while gathering optical label data and optical label Background
Picture, by converting the moving displacement image of the filming frequency of picture pick-up device, abatement apparatus, realizes to optical label and background image
While gathering, and realize the alignment of two kinds of shooting image contents, superposition synthesis；Both the data transfer of optical label had been ensure that, had been made again
Obtaining the background image residing for optical label to be retained, user being improve in the On-site Experience using optical label, said method is to work as
Other labels front are (such as：Quick Response Code, bar code) problem that is not directed to of method.
Description of the drawings
Fig. 1 optical label sample；
Fig. 2 optical label shoots and optical label decodes relay operative scenario schematic diagram；
Fig. 3 image view-finder coordinate system graph of a relation；
Optical label coordinate transform schematic diagram before and after Fig. 4 motion；
Fig. 5 optical label shoots and optical label decodes relay workflow diagram.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail：
As shown in figure 1, optical label includes that signal element (cell) group (or referred to as " data bit ") and positioning mark are (or simple
Referred to as " flag bit ") two parts, wherein positioning are designated the larger rectangle frame of three, upper figure, and (three this rectangle frames are referred to as " one group
Position identifiers "), under working condition, positioning mark is flashed with certain Frequency Synchronization, can be very by the method for image difference
So fast that to be detected by picture pick-up device, and then the position that can determine signal element is identified by positioning, so as to carry out data knowledge
Not with reading；Signal element is the little square of rectangle black and white between positioning mark, and multiple signal elements constitute one group, usual signal
Unit constitutes the array of 5 × 5 (being not limited to), and each signal element represents " 0 " or " 1 " of digital signal, whole signal element group
(length of side of flag is the twice of the data bit length of side to the digital signal sequences of matrix one frame of composition of composition here, easily facilitates
Positioning), in order to increase the data space that signal element represents, under working condition, each signal element also can be entered according to predetermined program
Row flashes, so as to be shown more signal contents by multiframe., at this moment need to provide a start frame/end in multiframe
Mark frame, for demarcating the beginning/end position of one complete cycle of multiframe, the frame signal unit group be set as one special
Data are combined, such as：Full 0 or complete 1 or any not different with the information of actual capabilities statement specific combination.
Above-mentioned optical label shoots and optical label decoding relay operative scenario is as shown in Figure 2.In figure 2-1 is set for optical label identification
Standby, 2-2 is the real scene residing for optical label, and 2-3 is that optical label, 2-1 needs to realize to 2-2's and 2-3 by shooting in short-term
While shooting and identification, and eliminate the image and optical label dislocation for bringing because of 2-1 motion.
As shown in figure 5, above-mentioned optical label shoots and optical label decodes relay method of work, its process is：
Step one：Optical label Scan orientation is carried out, is found the optical label in positioning scene and its position coordinates is obtained, such as scheme
3；Above-mentioned optical label Scan orientation method is as follows：2-1 is designated as according to itself natural frequency continuous acquisition multiframe label image：f0,
f1..., fm, m is that natural number, consecutive frame acquisition time is not less than the time interval that optical label position identifiers flashes twice；To phase
Adjacent any two frame makes the difference gets differential chart, until the positioning for finding 2-1 in differential chart is identified, obtains which further whole
Coordinate position in individual image, remembers the coordinate for (x1,y1)；
Step 2：Optical label content is read, Decoding Analysis frame by frame are carried out to optical label video data, its method is：By 2-1
Picture-taken frequency heighten optical label data acquisition state, i.e., per frame between collection duration be equal to the flicker frequency of optical label
The inverse of rate；2-1 is with the cycle as m, and content is broadcasted in circulation, it is assumed that the moment now is t1, the m frame of whole a cycles of collection
Label image, is designated as：f0', f1' ..., fm', signal element group is obtained using positioning mark obtained above, by arbitrary frame fi’
The signal element group of image according to dividing elements, 0≤i≤m, obtain per unit digital signal value, then obtain fi' frame cursor
Data sequence is signed, is designated as Xi；, according to this method obtain f1' ..., fm' shown by data, be combined into complete 2-1 and broadcast content；
Step 3：Shooting background picture material, its method is：The picture-taken frequency of 2-1 is turned down image taking shape
State, i.e., the acquisition time between every frame is more than the flicker frequency of optical label；Moment now is t2, many frame taggings figure of collection
Picture, is designated as：f0", f1" ..., fm”；
Step 4：Carry out optical label Scan orientation again, find the optical label in positioning scene and its position coordinates is obtained,
Its method is identical with one method of above-mentioned steps, obtains position coordinateses of the optical label in current window, is expressed as (x2,y2)；
Step 5：Carry out optical label to be aligned with background image, here due to time t1To t2Very of short duration, therefore can be by
The movement of 2-1 is considered as linear uniform motion, as shown in figure 4, then the distance of 2-1 movement is (x1,y1) to (x2,y2) distance, side
To for (x1,y1) to (x2,y2) reverse, then take (x1,y1) to (x2,y2) point midway is for being directed at basic point, the point is in t1Time chart
(x as coordinate system1+(x2-x1)/2,y1+(y2-y1)/2) place；Will be in t1Moment 2-1 display screen image is with point (x1+(x2-
x1)/2,y1+(y2-y1)/2) it is center, largest square is taken for background, insufficient section is ignored, then by optical label and its is compiled
Code information is also with (x1+(x2-x1)/2,y1+(y2-y1)/2) point centered on, Overlapping display is finished on Background.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1.It is identified with iphone-6s plus, while carry out background shooting and optical label decoding.First, exist
Certain moment t, the filming frequency for arranging photographic head is (parameters in series is referred to as data acquisition state parameter)：
Exposure time：3×10-5Second；
ISO light sensitivitys：664.7；
Shoot resolution：4K(3840×2160)；
The positioning of optical label in scene is carried out, difference after gathering adjacent two field pictures, is carried out, find the positioning mark of optical label
Know symbol, and then the position coordinateses in the picture of positioning optical label are (244,156)；T+1 moment second, then the shooting by photographic head
Frequency configuration is for (exposure time and ISO light sensitivitys can be the value of setting automatically, or manual according to the illumination condition of environment as follows
Arrange and be suitably worth, as a example by this sentences under indoor environment, the parameters in series is referred to as shooting state parameter)：
Exposure time：3×10-3Second；
ISO light sensitivitys：736；
Shoot resolution：4K(3840×2160)
Surrounding's scene image of optical label is acquired；T+2 moment second, then arrange photographic head filming frequency be data
Acquisition state parameter, carries out the positioning of optical label in scene, and obtains current cursor label position for (295,265)；Judge to take the photograph
As direction and the speed of equipment movement, and (244,155) are taken with the midpoint of (296,265) as the centre of location, t is gathered
Being put as display centre with (270,210) in image, is taken and includes in iphone-6s plus display screen resolution area
Largest square, insufficient section is ignored, then also Overlapping display centered on (270,210) exists by optical label and its coded information
On Background, finish.
Above content is further description made for the present invention, it is impossible to only assert the specific embodiment of the present invention
It is limited to this, for general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, also
Some simple deduction or replace can be made, and should be all considered as belonging to the present invention and invention be determined by the claims that is submitted to
Protection domain.
Claims (4)
1. a kind of optical label shoots and optical label decodes relay method of work, it is characterised in that：
Optical label includes that signal element group or referred to as " data bit " and positioning identify or be referred to as " flag bit " two parts, positioning
Identify and flashed with certain Frequency Synchronization, picture pick-up device detection positioning mark determines the position of signal element, so as to carry out data
Identification and reading；Each signal element represents " 0 " or " 1 " of digital signal, and the matrix of whole signal element group composition constitutes one
The digital signal sequences of frame；
Optical label shoots and optical label decodes relay method of work, and concrete grammar is as follows：
Step one：Optical label Scan orientation is carried out, is found the optical label in positioning scene and obtain its position coordinates；By cursor
Identification equipment (2-1) collection multiframe label image is signed, the positioning mark of optical label identification equipment (2-1) is found, is obtained further
Its coordinate position in whole image, remembers the coordinate for (x1,y1)；
Step 2：Optical label content is read, Decoding Analysis frame by frame are carried out to optical label video data；
The picture-taken frequency that optical label is recognized equipment (2-1) heightens optical label data acquisition state, i.e., between every frame
Collection duration is equal to the inverse of the flicker frequency of optical label；Optical label identification equipment (2-1) is with the cycle as m, and content is broadcasted in circulation,
Assume that the moment now is t1, the m frame tagging image of whole a cycles of collection, it is designated as：f0', f1' ..., fm', using upper
State the positioning mark for obtaining and signal element group is obtained, by arbitrary frame fi' image signal element group according to dividing elements, 0≤i≤
M, obtains the digital signal value per unit, then obtains fi' frame optical label data sequence, be designated as Xi；, method acquisition according to this
f1' ..., fm' shown by data, be combined into complete optical label identification equipment (2-1) and broadcast content；
Step 3：Shooting background picture material：
The picture-taken frequency that optical label is recognized equipment (2-1) turns down image taking state, i.e., per frame between collection when
Between more than optical label flicker frequency；Moment now is t2, the multiframe label image of collection, it is designated as：f0", f1" ..., fm”；
Step 4：Carry out optical label Scan orientation again, find the optical label in positioning scene and its position coordinates is obtained, its side
Method is identical with one method of above-mentioned steps, obtains position coordinateses of the optical label in current window, is expressed as (x2,y2)；
Step 5：Carry out optical label to be aligned with background image, due to time t1To t2Very of short duration, optical label is recognized equipment (2-
1) movement is considered as linear uniform motion, then the mobile distance of optical label identification equipment (2-1) is (x1,y1) to (x2,y2) away from
From direction is (x1,y1) to (x2,y2) reverse, then take (x1,y1) to (x2,y2) point midway is for being directed at basic point, the point is in t1
(the x of moment image coordinate system1+(x2-x1)/2,y1+(y2-y1)/2) place；Will be in t1Moment optical label identification equipment (2-1) shows
Screen picture is with point (x1+(x2-x1)/2,y1+(y2-y1)/2) it is center, largest square is taken for background, insufficient section is neglected
Slightly, then by optical label and its coded information also with (x1+(x2-x1)/2,y1+(y2-y1)/2) point centered on, Overlapping display the back of the body
On scape figure.
2. optical label according to claim 1 shoots and optical label decodes relay method of work, it is characterised in that：The step
Rapid one, carrying out optical label Scan orientation method is：Optical label identification equipment (2-1) is according to itself natural frequency continuous acquisition multiframe
Label image, is designated as：f0, f1..., fm, m is that natural number, consecutive frame acquisition time is dodged twice not less than optical label position identifiers
Bright time interval；Adjacent any two frame being made the difference and gets differential chart, sets until optical label identification is found in differential chart
The positioning of standby (2-1) is identified, and obtains its coordinate position in whole image further, remembers the coordinate for (x1,y1).
3. optical label according to claim 1 shoots and optical label decodes relay method of work, it is characterised in that：Optical label
Signal element be the little square of rectangle black and white between positioning mark, multiple signal elements constitute one group, signal element composition 5 ×
5 array, each signal element represents " 0 " or " 1 " of digital signal, and the matrix of whole signal element group composition constitutes a frame
Digital signal sequences.
4. optical label according to claim 1 shoots and optical label decodes relay method of work, it is characterised in that：Optical label
Each signal element flashed according to predetermined program, more signal contents are shown by multiframe, are given in multiframe
Start frame/end of identification frame, for demarcating the beginning/end position of one complete cycle of multiframe.
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| WO2020192543A1 (en) * | 2019-03-27 | 2020-10-01 | 北京外号信息技术有限公司 | Method for presenting information related to optical communication apparatus, and electronic device |
| CN111754449A (en) * | 2019-03-27 | 2020-10-09 | 北京外号信息技术有限公司 | Scene reconstruction method based on optical communication device and corresponding electronic equipment |
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| CN106446749B (en) | 2019-08-13 |
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