CN106951894A - Hand-held Optical Character Recognition system and method can be trained - Google Patents
Hand-held Optical Character Recognition system and method can be trained Download PDFInfo
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- CN106951894A CN106951894A CN201611079222.2A CN201611079222A CN106951894A CN 106951894 A CN106951894 A CN 106951894A CN 201611079222 A CN201611079222 A CN 201611079222A CN 106951894 A CN106951894 A CN 106951894A
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- mark
- hand held
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- held scanner
- font
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/60—Static or dynamic means for assisting the user to position a body part for biometric acquisition
- G06V40/67—Static or dynamic means for assisting the user to position a body part for biometric acquisition by interactive indications to the user
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/146—Aligning or centring of the image pick-up or image-field
- G06V30/147—Determination of region of interest
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
Abstract
Hand-held Optical Character Recognition system and method can be trained by disclosing.Hand held scanner is comprising vision software so that the hand held scanner is trained for OCR.The hand held scanner may include user interface, so that the electronic data of user-association mark image and the mark.The user interface, and range finder, it may also be used for change the variable of influence image scanning quality, thus improve the outcome quality of image scanning and/or decoding process.The hand held scanner can also describe file during decoding process using font.The font, which describes file, to be generated using the composite image file of character.The composite image file can be set up by explaining mark font file.
Description
Cross-reference to related applications
The application is to be filed on October 23rd, 2014, entitled " can train hand-held Optical Character Recognition system and method "
Copending U.S. Patent Application sequence number 14/521,508 continuation in part application, above-mentioned application is August in 2012 21
The U.S. Patent Application Serial Number 13/590,744 of submission, now for the entitled of October 28 in 2014 " hand-held optics can be trained
This is incorporated herein by reference in the application that continues of the U.S. Patent number 8,873,892 of character recognition system and method ", all applications
Text.
Statement on federal patronage research and development
It is unavailable.
Background technology
This technology is related to imaging system, more specifically it relates to can train the hand-hold scanning of optical character recognition function
Instrument.
Optical imaging system comprising optical character identification (OCR) be used for for example read packaging or the font on article or
Other symbols.The most frequently used one kind is hand held scanner in these imaging systems.OCR is generally considered to be from hand-written, with beating
Text electronics that word machine is got or printing to machine codified text can scan image electronics conversion.For imaging system
For it is important that obtain quality scanning so that image can more compactly be stored, Real time displaying, and be used in by electronic search
In the machine processes of such as machine translation, Text To Speech, and text mining application etc.
In order to improve scanning result, some optical imaging systems using standardization machine readable font, such as OCR-A and
OCR-B, to make, OCR processes are more accurate to be created for it.Standardization font makes the font in decoding image more uncomplicated, because
It is made into recognizing that it attempts the font of the simplification of scanning for imaging system, and individual characters are designed to be easy to distinguish in font
Not.For example, digital " 0 " includes breach to help mutually to distinguish with alphabetical " o " (small letter) and " O " (capitalization).Anyway, it is multiple
Imaging applications, particularly wherein hand held scanner is expected to carry out the application of sweep object or article, not using standardization font.
Some modern OCR systems can be " trained " to recognize alternative font and other symbols.But, training process is
Complicated and time-consuming process, wherein have to scan through each font and/or symbol, then manually with desired electronic character or number
According to associated.The training process is directed to use with computer, and wherein user can check scanned image and by the image with expecting
Data match.Once all fonts or symbol are associated with desired data, the electricity with all associated datas can be generated
Subfile, and then this document can be passed to imaging system, by the imaging system using to improve scanning result.
In the presence of the current hand held scanner with limited OCR functions, these current hand held scanner requirements are matched somebody with somebody in advance
The machine readable font put, such as OCR-A and OCR-B.Train current handheld scanner on optional font or symbol not
It is feasible because hand held scanner and without processing function and user interface to provide between font and symbol and expected data
Association.In addition, as any imaging device, it is contemplated that a large amount of variables of influence image scanning quality are swept there is provided each image
The quality results retouched are probably difficult.
Need the System and method for for allowing to train hand held scanner according to fonts available for character selection and/or symbol.Also need to lead to
Cross and change the variable of influence image scanning quality to improve the System and method for of the quality of each image scanning.
The content of the invention
The hand held scanner is allowed to be trained for OCR, this implementation by the way that vision software is combined with hand held scanner
Example overcomes the inferior position of prior art.In some embodiments, the hand held scanner may include user interface, to allow user-association
Mark the electronic data of image and the mark.The user interface, and range finder, may be additionally used for changing influence image scanning matter
The variable of amount, thus improves the quality of the result of image scanning and/or decoding process.In other embodiments, the hand held scanner
Font can be used to describe file during the decoding process.In some embodiments, using the composite image file next life of character
File is described into the font.The composite image file can be set up by explaining mark font file.In other embodiments, the hand
Scanner is held to can be used by explaining that the font for marking font file and generating describes file.
Therefore, some embodiments include hand held scanner.The hand held scanner includes scanner sub-component.Scanner
Component may include vision sensor, is coupled in the processor of the vision sensor and be coupled in the memory of the processor.User
Interface may couple to the scanner sub-component, and the user interface includes visual displays, and the mark to be scanned for browsing is extremely
At least part of image scene, the visual displays is included in the browsable area-of-interest on the visual displays, the sense
Interest region can make user position the hand held scanner for the optimal X-Y location of the hand held scanner.Also, vision software
Can be by the computing device, the vision software is operable to mark font file to decode the subsequent figure of the mark digitally to explain
Picture, the mark font file describes the mark.
Other embodiment includes hand held scanner.The hand held scanner includes scanner sub-component.The scanner sub-component
It may include vision sensor, be coupled in the processor of the vision sensor and be coupled in the memory of the processor.Range finder can
Be coupled in the scanner sub-component, the range finder from the predefined distance of face extension one of the scanner sub-component, this it is predefined away from
From providing with a distance from the best effort for scanning, the range finder is basically parallel to the vision from the face of the scanner sub-component and passed
The optical axis of sensor and extend out.Also, vision software can be by the computing device, and the vision software is operable digitally to solve
Mark font file is released to decode the successive image of the mark, the mark font file describes the mark.
Another embodiment includes hand held scanner.The hand held scanner includes scanner sub-component.The scanner sub-component
It may include vision sensor, be coupled in the processor of the vision sensor and be coupled in the memory of the processor.User circle
Face may couple to the scanner sub-component, and the user interface includes visual displays, and the mark to be scanned for browsing is at least
The image scene of a part, the visual displays is included in the browsable area-of-interest on the visual displays, and the sense is emerging
Interesting region can make user position the hand held scanner for the optimal X-Y location of the hand held scanner.Range finder may couple to
The hand held scanner sub-component, the range finder is from the predefined distance of face extension one of the scanner sub-component, and this predefines distance
The best effort distance for scanning is provided, the range finder is basically parallel to the visual sensing from the face of the scanner sub-component
The optical axis of device and extend.Also, vision software can be by the computing device, and the vision software is operable digitally to explain mark
Font file is to decode the successive image of the mark, and the mark font file describes the mark.
According to above, some embodiments include the method for being used to scan mark on object.This method includes providing hand-held
Scanner, the hand held scanner includes vision sensor, is coupled in the processor of the vision sensor, is coupled in the processor
Memory, user interface and range finder；The visual displays in the user interface is enabled, the visual displays is used to browse the mark
At least one of image scene of note；The visual displays is observed, while the mobile hand held scanner is so that the visual display
Device shows at least one of image scene of the mark；Position at least one of image scene of the mark approaching or at
In browsable area-of-interest on the visual displays, for feedback of aliging；The hand held scanner is positioned so that the ranging
The distal contact of device or substantially close to the object；And digitally perform the vision software, for explain mark font file and
Successive image for decoding the mark, the mark font file describes the mark.
In some embodiments, this method can further comprise digitally performing the vision software, for digitally associating this
Mark font file with desired electronic data and describes file for generating font, and the font describes file should available for decoding
The successive image of mark.
In some embodiments, digitally association further comprises utilizing the user interface associating the electronic chart of the mark
Picture and desired electronic data.
In some embodiments, this method can further comprise digitally explaining the mark font file setting up composite diagram
As file.
In some embodiments, this method can further comprise digitally associating the composite image file and desired electron number
The font is just generated according to this describes file.
In some embodiments, this method can further comprise enabling the trigger of the hand held scanner enabling the vision
Display.
In some embodiments, this method can further comprise the trigger for discharging the hand held scanner, to start the mark
Scanning.
In some embodiments, this method can further comprise the image for decoding the mark, and show on the indicator screen
Show decoded mark.
In certain embodiments, this method can further comprise：The image scene of mark is positioned proximate to or in this
In browsable area-of-interest on visual displays；Position the hand held scanner so that the distal contact of the range finder or
Substantially close to the object；Start the second scanning of the mark to generate the second electronic image of the mark；Access is stored in this and deposited
Font in reservoir describes file；And utilize accessed font to describe the second electronic image of the file decoding mark.
For the achievement of foregoing and related target, this technology then includes hereinafter fully described feature.Describe below
The many-side of this technology is illustrated with appended accompanying drawing.However, these aspects only represent that a variety of of this technology principle can be used
Sub-fraction in mode.Pass through described in detail below, the other side of this technology, advantage with reference to accompanying drawing reference pair this technology
It will become obvious with novel feature.
Brief description of the drawings
Fig. 1 is the schematic diagram of one embodiment of the hand held scanner according to the present embodiment, and shows to can be used for OCR functions
Optional computer；
Fig. 2 is the top view of the hand held scanner shown in Fig. 1；
Fig. 3 is the perspective view of the hand held scanner shown in Fig. 1, and shows to be located at certain position before an object is scanned
Hand held scanner；
Fig. 4 is the view of the display screen from the hand held scanner according to the present embodiment, and shows one with partial view
Mark and an only part for the mark on object is in area-of-interest；
Fig. 5 is the view of the display screen shown in Fig. 4, now shows the mark but still the only mark with whole views
A part is located in area-of-interest；
Fig. 6 is the view of the display screen shown in Fig. 5, now shows the mark with whole views and the mark is emerging positioned at sense
In interesting area；
Fig. 7 is the perspective view of the hand held scanner shown in Fig. 3, now positioned at scan position, the object and the hand-hold scanning
There is preset space length between instrument；
Fig. 8 and 9 is the flow chart of the method associated with the hand held scanner；
Figure 10 is method flow diagram, for generating composite image file；
Figure 11 describes the schematic diagram of file for font；
Figure 12 is the flow chart for being associated with the method for training the hand held scanner；And
Figure 13 is to be associated with the method that the scanned image of file decoding is described using font.
Although this technology allows a variety of modifications and substitutions forms, specific embodiment will be shown simultaneously by the example in accompanying drawing
It will be described in detail herein.It should be appreciated, however, that the description to specific embodiment is not intended to limit this technology here
In particular forms disclosed, on the contrary, it is intended to the spirit and model that covering belongs to this technology as defined by the appended claims
Enclose interior all modifications, equivalent and replacement.
Embodiment
The various aspects of this technology are described with reference now to accompanying drawing, wherein reference similar in some views corresponds to
Similar element.However, it is to be appreciated that hereafter involved accompanying drawing and detailed description are not intended theme claimed
It is limited to particular forms disclosed.On the contrary, the present invention is by comprising in the spirit and scope in theme claimed
All modifications, equivalent and replacement.
As it is used herein, term " component ", " system ", " equipment " etc. refers to hardware, the combination of hardware and software,
Software either executory software.Word " exemplary " used herein is denoted as example, example or explanation.Herein
Be described as " exemplary " any aspect or design be not necessarily to be interpreted compared to other aspects or design more preferably or
Favorably.
In addition, disclosed theme is implemented as by using standard program and/or engineering technology and/or programming to come
Generation hardware, firmware, software or its any combinations are with the system for controlling the equipment based on electronics, method, device or product, with reality
Apply the various aspects being described in detail here.
Unless specified or limited, term " connection " and " coupling " and its modification are widely used, and comprising straight
Connect and indirectly install, connect, supporting and coupling.In addition, " connection " and " coupling " is not limited to physics or mechanical connection or coupling.
As used herein, unless separately clearly stated, " connection " refers to that an element/feature is directly or indirectly connected to separately
One element/feature, and be not necessarily either electrically or mechanically.Similarly, unless separately clearly stated, " coupling " refers to one
Element/feature is coupled directly or indirectly to another element/feature, and with being not necessarily electricity or mechanically.
As used herein, term " processor " may include one or more processors and multiple memories and/or one
Individual or multiple programmable hardware elements.As used herein, term " processor " is intended to include any kind of processor,
CPU, microcontroller, digital signal processor or the other equipment that software instruction can be performed.
As used herein, term " storage medium " includes non-volatile media, and such as magnetizing mediums or hard disk, optics are deposited
Storage or flash memory；The Volatile media of such as system storage etc, such as such as DRAM, SRAM, EDO RAM, RAMBUS RAM,
DR DRAM etc random access memory (RAM)；Or computer program can be stored thereon and/or data cached can be communicated
Install medium, such as software medium, such as CD-ROM or floppy disk.Term " storage medium " may also include other kinds of storage
Device or its combination.
Retouched below by the structure or processing of the embodiment for illustrating the embodiment for implementing this technology using diagram
State the embodiment of this technology.The embodiment that this technology is presented using diagram by this way is not necessarily to be construed as to its scope
Limitation.This technology considers the electronic equipment and system and method for training hand-held Optical Character Recognition system.
Hand held scanner will be combined now to describe each embodiment of imaging system, the hand held scanner is suitable to be trained to
With the OCR being implemented on customization and fonts available for character selection and other symbols.Because the feature and advantage of this technology are well adapted for
The purpose.And it should be understood that each side of this technology can be used for the imaging system for the other forms that can be benefited from OCR functions
System.
Referring now to Fig. 1, an exemplary embodiment described in the environment of hand held scanner 20, except other assemblies
Outside, the hand held scanner 20 includes scanner sub-component 22, user interface 24 and optional rangefinder 26.Show as non-limiting
Example, exemplary hand-held scanner 20 can be used for storing, and manufacture, and assemble, automation, and/or control application etc..Exemplary hand-held is swept
Retouch instrument 20 and image capture software 30 can be used, image capture software 30 is any in polytype IMAQ available for performing
It is a kind of.As non-limiting example, the hand held scanner 20 can perform machine visual task, including scan and decode comprising font
And/or the image of symbol.
Referring still to Fig. 1, scanner sub-component 22 may include the various assemblies for being used for scanning process.For example, scanner
Sub-component 22 may include vision sensor 32.When pulling or discharging trigger 40, vision sensor 32 is used for will be from object 34
The light of mark 38 (S that is illustrated as formalization) reflection associated with the object is converted to electronics, with visual field
(FOV) electronic image 48 of the mark 38 is created in 36.In certain embodiments, lens subassembly 42 can be located at vision sensor 32
On or before, with to vision sensor 32 provide FOV36 in object 34 view.
Scanner sub-component 22 may also include processor 44, for such as image procossing and decoding.Processor 44 is coupled to
Vision sensor 32, and can be vision sensor 32 a part or can local link to vision sensor 32.Processor 44
Usable image acquisition software 30 is encoded, in addition to other things, can be configured as control illumination, collection view data and will be gathered
Image real time transfer/be decoded as available information etc..Processor 44 is further coupled to one or more visual feedback equipment 46
And/or one or more audio feedback equipment 50 represent that the result of scanning and/or decoding process (e.g., is imaged to provide a user
The quality of mark whether meet or more than base line quality assessed value) feedback.For example, visual feedback equipment 46 may include lamp or
Light emitting diode 46 and audio feedback equipment 50 may include miniature loudspeaker or calling set equipment 50.In at least some situations,
Different LED colors can be used to represent whether mark quality tests that (e.g., green LED can represent high mark quality by baseline value
And red LED represents the mark not over quality test).
Scanner sub-component 22 may also include the storage medium 52 coupled to vision sensor 22 and/or processor 44.
The storage medium can be used for the storage image 48 that scans or handle, font and describe file 58, mark the and of font file 170
Buffered data is with communicating.COM1 54 is also coupled to processor 44, and provides tie point to optional computer 56.Meter
Calculation machine 56, which can be used for uploading and download for example scanned or image 48 through processing, font, describes file 58 and mark font
File 170.It should be understood that also contemplating radio communication.
Referring to Fig. 1, and Fig. 2, hand held scanner 20 may also include user interface 24 to allow customer impact to carry out self-scanning
The quality of the result of instrument.In certain embodiments, for example, user interface may include to run Microsoft Windows CE platforms
Small portable data terminal or similar devices.
User interface 24 may include display screen 60 and keyboard 62, and can be integrated with scanner sub-component 22, or can be
It is operably coupled to the removable equipment of scanner sub-component 22.In certain embodiments, display screen 60 may include to touch
Shield function, so as to eliminate or reduce the quantity for the key that keyboard 62 is potentially included.Display screen 60, which is provided, is located at hand held scanner
Scene feedback view 64 in 20 FOV36 at least a portion.
Exemplary display screen 60 may include be located at display screen 60 on it is shown or otherwise be user
Visible region of interest (ROI) region 66.By allowing what on the whole user was just seeing to vision sensor 32 in FOV36
Image scene and reappose the hand held scanner 20 therefore desirable for mark 38 be optimally placed in ROI 66 so as to
In scanning, scene feedback view 64 and ROI 66 allow user manually to influence at least one imaging variables to carry out self-scanning to improve
Result quality.For example, feeding back view 64 when trigger 40 can enable scene when pulled, or optionally, work as hand-hold scanning
Instrument 20 is powered and prepares that scene feedback view 64 can be enabled during scanning.
Referring to Fig. 3, hand held scanner 20 is placed on the associated mark 38 that apart from object 34 and will be scanned by user
One specified distance.In certain embodiments, then user engages the trigger 40 to allow the displaying scene of display screen 60 anti-
Present view 64.Such as with covering frame, ROI 66 can be permanently positioned on display screen 60 (such as with a covering
Layer), or ROI 66 is adjustable image, its height and width can be adjusted for application-specific, and regard with scene feedback
Figure 64 is shown on display screen 60 together.It will be appreciated that ROI 66 needs not be square as depicted, and can be
On display screen 60 allow user reappose hand held scanner 20 improve the result for carrying out self-scanning quality it is any
Indicate.For example, circle, " X ", point or arrow or any combination can be used.
Referring to Fig. 4, the example view of display screen 60 is shown, wherein mark 38 is positioned partially at vision sensor 32
FOV36 is interior and is therefore partially displayed on display screen 60.User, when seeing that mark 38 is only partially shown, then
The position of adjustable hand held scanner 20, attempt reapposes hand held scanner 20 (or reapposing mark 38) so that mark 38
In ROI 66.Fig. 5 shows that wherein mark 38 is located in FOV36 and partly has ROI 66 example.Implement some
In example, the mark 38 can be scanned here.In order to improve the quality for the result for carrying out self-scanning, user can further reappose hand
Scanner 20 (or reapposing mark 38) is held so that mark 38 is substantially or entirely located in ROI 66.Fig. 6 shows wherein to mark
38 are fully located at the view of the display screen 60 in ROI 66.
In certain embodiments, it is anti-to provide a user that visual feedback equipment 46 and/or audio feedback equipment 50 can be used
Feedback is so as to represent the position of mark 38, and e.g., the mark is partially or even wholly in ROI.
Referring now to Fig. 7, the embodiment of hand held scanner 20 may include rangefinder 26.Individually or with display screen 60 and
In combination, rangefinder 26 can also be used for improving the quality for the result for carrying out self-scanning to associated ROI 66.When using conventional hand
During scanner, object 34 and associated physical location of the mark 38 relative to hand held scanner are inevitably in mark scan
It is middle to introduce uncertain.Display screen 60 and associated ROI 66 improve one or two in hand held scanner 20 and mark 38
Individual X-Y location, and certain improvement is provided in Z location or operating distance, while the use of rangefinder 26 can be optimal working distance
From hand held scanner 20 is placed with ratio, while also help X-Y location.
In the embodiment with rangefinder 26, it is assumed that hand held scanner 20 and object 34 and the associated mark to be scanned
Note 38 has predetermined optimum distance 72 so that largely calculate not requiring that processor 44 is performed to attempt to improve mark 38
The image is about focus alignment in the case of focusing, can improve the result of scanning.The optimal operating distance is for determining to scheme
The ratio that marks and ensure that enough focusing is important as in.In other embodiments, lens subassembly 42 can be focused
Or " zoom " lens subassembly 42, the operating distance that can be used for for wider range provides constant amplification.
In the illustrated embodiment, rangefinder 26 includes the multiple finger pieces 86 extended from pedestal 90 (see Fig. 2).Match somebody with somebody at this
In putting, for it may just look at the user of the mark 38 on object 34, mark 38 can keep visible.In other embodiment
In, rangefinder 26 can more tubulose or rectangle be without any gap as set by finger piece 86 in shape, thus portion
Divide ground or substantially reduce the visual user capability of real marking 38 made on object 34.
As shown in Figure 7, rangefinder 26 can extend from the front end face 74 of hand held scanner 20.Rangefinder 26 can be rigidity
Element, extends along the axis substantially parallel to the track of FOV36 intermediate track (not shown).In operation, hand-held sweep is being started
Retouch before instrument 20, user can place hand held scanner 20 so that the contact of distal end 76 and the phase of mark 38 that will be read of rangefinder 26
The first surface 80 of adjacent object 34.Herein, the length 82 (see Fig. 2) of rangefinder 26 is designed so that when the contact of distal end 76 the
Optimal image-forming range 72 is located between hand held scanner 20 and first surface 80 during one surface 80.Therefore, implement at least some of
In example, rangefinder 26 may also aid in elimination or reduce at least one imaging variables.
For example, referring still to Fig. 7, although rangefinder 26 is illustrated as rigidity and is integrally formed with hand held scanner 20,
In certain embodiments, for example, rangefinder 26 can be flexible, it can be stretched as wireless aerial, and be foldable to
Storage location.In certain embodiments, rangefinder 26 can be removable.For example, using coupled to hand held scanner 20
Above 74 folder or yoke (collar) 84 etc., rangefinder 26 it is attachable 74 before this at.Rangefinder 26 can also be by diffuse material
It is made, the illumination option that thus utilization can be obtained with hand held scanner 20.Then, the illumination from hand held scanner 20 may pass through
Diffuse material simultaneously provides additional diffusion illumination advantage to improve the quality for the result for carrying out self-scanning.
In certain embodiments, measuring apparatus 92 (known LED or laser diode 92 such as range measurement)
It can be included to combine or replace rangefinder with rangefinder 26 (see Fig. 2).When being optimal operating distance, laser diode
92 as one man can operate to provide instruction with display screen 60.Measuring apparatus 92 can be used as rangefinder, such as flight time laser
Rangefinder.Measuring apparatus 92 can be used determine the mark 38 for training distance and to the mark 38 for scanning away from
From.Then the proportional difference between training and scanning configuration is can be appreciated that, and can be put by standard machine vision technique to compensate this
Greatly, such as adjustment image size or the compensating proportion in OCR algorithm.
Referring again to Fig. 1, hand held scanner 20 can be trained to hold customization and fonts available for character selection and any other symbol
Row OCR.In this way, user can control which type of font and the symbol hand held scanner 20 to scan and decode exactly.
The problem of related to existing hand held scanner is the machine readable font that it is limited to scanning standard, such as
Know character group OCR-A and OCR-B, and can not require to be trained to according to user.These known character groups are designed to be easy to read
And identification.Existing hand held scanner can not read customization and fonts available for character selection and other symbols, and different printing method print can be used in it
Brush, such as dot matrix, thermal transfer, ink-jet, laser labelling, and they can not read and be printed on the consumer goods (such as potato chips packaging bag)
On character.These scanning application frequently involve atypia read situation, including change light, change the depth of field, various prints
Brush method and the angle of change are read.These situations cause an open question in the existing hand held scanner that can carry out OCR.
In certain embodiments, the hand held scanner 20 being trained to is combined to recognize font and symbol with display screen 60 and rangefinder 26
Just solve these atypia and read situation.
In order to train the hand held scanner 20, in certain embodiments, computer 56 can be used to create image-region
The font associated with character describes file 58.Image-region can be any shape, and may include the picture that looks like a character
Plain block, or any predefined shape, such as character " S ", are used as a non-limiting embodiments.Hand held scanner 20 can be used to gather
The electronic image 48 of character (e.g., mark 38), such as mark 38.Image 48 can be downloaded to computer 56, wherein can use
Such as from Cognex companiesThe vision software 96 of software etc is by the image 48 and font phase
Association.Once creating font describes file 58, font describes the memory that file 58 can be uploaded in hand held scanner 20
52.Then the hand held scanner 20 can be configured to read the font and describe file 58, and this allows the hand held scanner 20 to scan
And decode the font.
In an alternative embodiment, computer 54 can be saved and the association process describes the generation of file 58 with font and can occurred
In hand held scanner 20.User interface 24 or storage medium 52 may include vision software 96, and keyboard 62 may include enough work(
Can be to complete the association process.
Fig. 8,9 and 12 show the embodiment of the application method of hand held scanner 20.Method shown in Fig. 8,9 and 12 can with
Upper any system or equipment shown in the drawings etc. is used in combination.In various embodiments, some of shown method element can quilt
Perform simultaneously, perform or can be omitted by with shown order different.Also additional method element can be performed on demand.
Referring to Fig. 8, show method 120 be used for scan mark 38 on object 34.First step can be to provide
Including user interface 24 and the hand held scanner of rangefinder 26 20, as shown in process frame 122.In process frame 124, user can squeeze
Trigger 40 is pressed to enable visual displays 60.In process frame 126, then user's observable visual displays 60, simultaneously mobile
The hand held scanner 20, so that mark 38 is placed as quite possibly close to ROI 66 or in ROI 66.Then in mistake
Journey frame 130, user can place hand held scanner 20, so that the distal end 76 of rangefinder 20 is touched or quite close to object 34 and mark
38 first surface 80, so as to provide the optimal operating distance for scanning.It will be appreciated that the hand held scanner 20 may be
Through positioned at this optimal distance position.When mark 38 is placed in ROI 66 distal end 76 of (see Fig. 7) and rangefinder 26 by user
When touching object 34, in process frame 132, user discharges trigger 40 to start scanning.Optionally, in process frame 134, processing
The image of device 44 and then the decodable code scanning.Optionally, as shown in process frame 136, by starting one or more feedback devices
46th, 50 and/or by by decoded image include checked on display screen 60 for user, hand held scanner 20 can provide figure
As scanning and/or the instruction of successfully decoded.Then for next mark of scanning to be repeated to the process.
Referring to Fig. 9, it is shown as the OCR of mark 38 and trains the method 150 of hand held scanner 20.First step can be
Offer includes the hand held scanner 20 of memory 52 and user interface 24, as shown in process frame 152.In process frame 154, it can open
Move the visual displays 60 in user interface 24.Visual displays 60 can be used for the image scene for checking mark 38.In process
Frame 156, then user can observe the visual displays 60, while the hand held scanner 20 is moved or place, so that vision is aobvious
Show that device 60 shows the image scene of the mark 38.In process frame 160, the scanning of mark 38 can be started to generate the electronics of the mark
Image.Then the electronic image of the mark 38 can be stored in memory 52, as shown in process frame 162.Then, in process
Frame 164, can be associated with desired electronic data by the electronic image of mark 38.Then font can be generated and describe file 58, should
Font describes file 58, and electronic image is associated with desired electronic data, as shown in process frame 166, and in process frame
At 168, font, which describes file 58, can be stored in memory 52.
In other embodiments, font, which describes file 58, can directly or indirectly generate from a mark font file 170.Should
Mark font file 170 may be based on the description 172 of software, i.e., how one or more character sets utilize specific markers technology
Printed.As non-restrictive example, character set may include some or all alphanumeric characters, (see mark 38, be used as form
Change the example of alphabetical " S ") or other predefined character sets.
It is as discussed above, there is polytype character marking technology, as non-restrictive example, including dot matrix, thermal transfer,
Ink-jet and laser labelling.There is multiple mark manufacturers, including printer, it can utilize these any projects of technical mark one.
Some enterprises provide the multiple product using a variety of labelling techniques, and other enterprise's specialities are in single marking technology.Due to existing
The form mark of few mark font files 170 in a variety of labelling techniques and multiple enterprises using these technologies, mark industry
It is accurate.
Some mark font files can map directly to how specific markers 38 tackle printing, and other mark fonts are literary
Part does not map directly to how specific markers tackle printing.
One example of the labelling technique directly mapped is thermally printed process, and it can enter by more than per inch 600 points (dpi)
Row printing.Thermally printed technology is exclusively used in usually using TrueType or other similar scalable mark font files, and presence
Other known formats of manufacturer and labelling technique.Mark font file 170 for thermally printed process can be software description, and it is counted
Learning ground description can be by the profile for the specific markers 38 that printer is scaled and is drawn.
The example for the labelling technique not mapped directly typically is Laser marking technology.Laser labelling can be by some different
One of mode sets up mark.Marker (such as utilizing the laser printer of Laser marking technology) can burn up outer layer, leave lower section
Layer it is visible.Laser labelling can burn a surface or multiple surfaces using organic compound, set up the contrast with neighboring area.Swash
Signal can also change material properties, such as by melting plastics or metal, and it can then set up the change of reflectivity.For swashing
How the mark font file 170 of signal can be directed for software description, i.e. laser, generally by controlling the inclination of mirror, with
Set up specific markers 38.Mark 38 can be for example modeled as by the simple marking font file 170 for laser labelling can be in a table
The laser stroke of mark 38 is drawn on face.
Another common tags technology is continuous inkjet or CIJ.CIJ printers spray ink droplet stream with steady rate.These ink
Drop is powered and by the rail for the drop that the drop of power-up is transmitted between the disc with controlled electric charge and power-up is changed
Mark.To form specific markers, ink droplet is typically applied in single file, and its position is by the electric charge on the electric charge and disc on ink droplet
It is determined that.Motion of second dimension from the object printed by printer of mark 38.The mark font file marked for CIJ
170 can be software description, and it defines the two-dimensional ideal grid for the point for representing preferable droplet position to set up specific markers 38.Tool
The real world CIJ for having slow mobile object is marked, and such as a piece of paper can look closely this idealization grid.It hurry up
The mobile object of speed, which is set up, can look the mark from idealization grid deflection.Another effect is：As the object is moved into one
Step is away from CIJ print nozzles, and single drop is separated rather than contacted.
In some embodiments, mark font file 170 can be used by OCR algorithm.Mark font file 170 can also be digital
Ground is translated as a form, and such as font describes file 58, and it can be used by OCR algorithm.In some embodiments, when OCR algorithm
When details of operation and mark font file 170 form are for known to, this can be completed in a single step.In other embodiments, as
Intermediate steps, mark font file 170, which can be digitally translated as being utilized by OCR algorithm, idealizes composite image file 178
The form used.If OCR file formats are unknown, can be using this intermediate steps of composite image file 178 it is necessary,
And because standard OCR algorithm allow user from image " training ", i.e. allow user setting image-region and actual characters it
Between corresponding relation.In other words, composite image file 178 is generated, image-region is then designated specific character 180, such as
Formalization is alphabetical " S ".
With reference to Figure 10, interpretation algorithms 176, computer 56 or processor 44 digitally explain mark font file 170, with
Either directly or indirectly set up the composite image file 178 of one or more characters, such as (such as mark 38 of specific character 180
Formalization it is alphabetical " S ") or multiple characters (such as all alphanumeric characters).Then interpretation algorithms 176 knows specific character
(for example, specific character 180) is drawn on the specific region of mark font file 170.Then the information can be passed to OCR calculations
Method as specific character 180 input.Composite image file 178 can be electronic data file, and it provides the reason of specific character 180
The electronic data definition of wanting character pattern.Composite image file 178 may replace the electronics that file 58 is described for generating font
Image 48 in conjunction is used.
Because mark font file 170 describes how printer will print each specific character, such as character 180, character
Electronic image 48 need not be acquired and matched so that the image pixel of the character and the font of the character are described into file 58.Can be with
Do not need other inputs or interaction that the character in the image of acquisition and the font of respective character are described into file 58 and matched.Have
" the golden sample " of quality status stamp may not be needed to be established for training goal.
For training hand held scanner 20, font describes the memory 52 that file 58 can be uploaded in hand held scanner 20.
Then hand held scanner 20 can be configured to obtain an image, such as image 48, and read font and describe file 58, and it allows hand
Hold scanner 20 and scan and decode specific character, such as character 180.
In some embodiments, mark font file 170 can be for example downloaded to from computer 56 via COM1 54 to be deposited
Storage medium 52 is simultaneously stored in hand held scanner 20.When because OCR file formats are unknown and need composite image file 178
When, interpretation algorithms 176 can be explained mark font file 170 either directly or indirectly to set up the composograph of specific character 180
File 178.Composite image file 178 can be stored in storage medium 52 or can be uploaded to computer 56.Font describes file 58
Then can be generated, it associates composite image file 178 and character 184, for use in OCR processes during (referring to Figure 11).Should
Configuration can allow actual to print when ideal mark and operation preferably match between content, because mark font file 170 can be
The improvement description of physical markings process, then it can be modeled by OCR algorithm.
For example, the OCR font of characteristic can be given birth to when the interval of CIJ points and deflection can be measured and can more represent operation
Into.In CIJ printings, independent drop can be described in mark font file 170, but the information can set up synthesis in experience
Lost during the intermediate steps of image file 178.The information can be used preferably to handle a such as drop/position by OCR algorithm
Situation when being increased or decreased based on the portion from ink nozzle.
Second example is laser labelling.As discussed above, laser stroke width can be excited luminous power and labeled material
Properties affect.And if the information is given OCR algorithm, OCR algorithm can be handled preferably with preferably deviateing, because OCR
Algorithm is typically configured to the information using the type.
In other embodiments, mark font file 170 can be located on computer 56.Computer 56 can be stored and using explanation
Algorithm 176, when needed, explains mark font file 170 either directly or indirectly to set up the composograph of specific character 180
File 178.Composite image file 178 can be stored on computer 56 or composite image file 178 can be downloaded to memory
Medium 52 is simultaneously stored in hand held scanner 20.Font describes file 58 and then can be on computer 56 or hand held scanner 20
In be generated, to associate the composite image file 178 of specific character 180 and character 184, during OCR processes.
Other features for describing to translate between file 58 in mark font file 170 and font are taken explicitly into account.For example, mark
Remember that font file 170 is unnecessary directly to be used.For example, intermediate file format, such as general laser font description, can be made
For marking font file 170 and font to describe the translation between file 58.
For some mark font files 170, flag attribute when ideal mark character may deviate from operation.When character is inclined
From it is identified when, other attributes of character, such as yardstick, can be identified during operation, its training when and operation when image be through
When being obtained by hand held scanner 20 not necessarily.
With reference to Figure 12, the optional method 190 for the OCR that training hand held scanner 20 enters line character 180 is illustrated.The first step
Suddenly can be to explain mark font file 170, such as processing block 192 is represented.Alternatively, mark font file 170 can be calculated using explaining
Method 176 is explained.Interpretation algorithms 176 can set up composite image file 178, such as be represented in processing block 194.Composite image file
178 can provide the electronic data definition of the idealization character pattern of specific character (such as character 180).Alternatively, in processing block
198, composite image file 178 can be used for generation font to describe file 58.In processing block 200, font describes file 58 and can deposited
It is stored on computer 56 or in storage medium 52.
With reference to Figure 13, it is illustrated using the method 204 of the mark 38 on the sweep object 34 of hand held scanner 20.In processing block
206, the image that user starts mark 38 is obtained.In processing block 208, then processor 44 can be attempted by relatively more scanned figure
As describing file 58 to decode scanned image with font.Alternatively, such as represented in processing block 210, by start one or
Multiple feedback devices 46,50 and/or by showing decoded image on indicator screen 60 so that user sees, it is hand-held to sweep
Image acquisition and/or the expression of successfully decoded can be provided by retouching instrument 20.The process then next image of mark can be obtained and
Repeat.
Although this technology is described with reference to preferred embodiment, it will be appreciated by persons skilled in the art that can be in form
With made in details change without departing from this technology spirit and scope.For example, this technology is not limited to shown in this article hand-held sweep
The embodiment of instrument and associate device is retouched, and can be implemented using other scanners and camera.
Particular embodiments disclosed above is merely illustrative, because this technology can be repaiied by different equivalent mode
Change and realize, be obvious for this those skilled in the art instructed herein benefiting from.In addition, being not intended to limitation
The details of construction or design described in illustrated herein and appended claims.Therefore, particular embodiments disclosed above shows
It can so be altered or modified, and all changes considered to be in the scope and spirit of this technology.Therefore, in appended claims
Protection required by middle described this paper of statement.
Claims (22)
1. a kind of hand held scanner, including：
Scanner sub-component, the scanner sub-component include vision sensor, be coupled in the vision sensor processor and
It is coupled in the memory of the processor；
User interface, is coupled in the scanner sub-component, and the user interface includes visual displays, the mark to be scanned for browsing
At least one of image scene of note, the visual displays is included in the browsable region of interest on the visual displays
Domain, the area-of-interest can make user position the hand held scanner for the optimal X-Y location of the hand held scanner；And
Vision software, can be by the computing device, and the vision software is operable to mark font file to decode digitally to explain
The successive image of the mark, the mark font file describes the mark.
2. hand held scanner according to claim 1：
The wherein vision software is operable digitally to associate the mark font file and desired electronic data and generate font
File is described, the font describes the successive image that file can be used for decoding the mark.
3. hand held scanner according to claim 1：
Wherein the mark font file is digitally explained to set up composite image file.
4. hand held scanner according to claim 3：
Wherein the composite image file is digitally associated with desired electronic data and describes file to generate the font.
5. hand held scanner according to claim 1：
Further comprise range finder, be coupled in the scanner sub-component, the range finder extends one from the face of the scanner sub-component
Predefined distance, the predefined distance provides the best effort distance for scanning, and the range finder is from the scanner sub-component
Face is basically parallel to the optical axis of the vision sensor and extended out.
6. hand held scanner according to claim 1：
Wherein the user interface includes portable data terminals.
7. hand held scanner according to claim 1：
Further comprise at least one in visible feedback equipment and audio feedback device, to provide feedback directly to user so as to represent
This is marked in the area-of-interest.
8. hand held scanner according to claim 1：
Further comprise the light source on the scanner sub-component, to provide illumination, the range finder includes diffuse material, and should
Illumination is illuminated through the range finder diffuse material with providing diffusion on this mark.
9. a kind of hand held scanner, including：
Scanner sub-component, the scanner sub-component includes vision sensor, is coupled in the processor and coupling of the vision sensor
Together in the memory of the processor；
Range finder, is coupled in the scanner sub-component, and the range finder predefines distance from the face extension one of the scanner sub-component,
The predefined distance provides the best effort distance for scanning, and the face of the range finder from the scanner sub-component is basically parallel to
The optical axis of the vision sensor and extend out；And
Vision software, can mark font file to decode by the computing device, the operable vision software digitally to explain
The successive image of the mark, the mark font file describes the mark.
10. hand held scanner according to claim 9：
The wherein vision software is operable digitally to associate the mark font file and desired electronic data and generate font
File is described, the font describes the successive image that file can be used for decoding the mark.
11. hand held scanner according to claim 9：
Wherein the mark font file is digitally explained to set up composite image file.
12. hand held scanner according to claim 11：
Wherein the composite image file is digitally associated with desired electronic data and describes file to generate the font.
13. hand held scanner according to claim 9：
Further comprise user interface, be coupled in the scanner sub-component, the user interface includes visual displays, for browsing
At least one of image scene for the mark to be scanned, the visual displays is included in browsable on the visual displays
Area-of-interest, the area-of-interest can make user position the hand-hold scanning for the optimal X-Y location of the hand held scanner
Instrument.
14. hand held scanner according to claim 9：
Further comprise constant focus lens assembly, with the substantially invariable amplification for the predefined scope for providing operating distance.
15. hand held scanner according to claim 9：
Further comprise measuring apparatus, the measuring apparatus determine to the mark distance, the processor use the mark away from
From progress yardstick determination.
16. hand held scanner according to claim 9：
Further comprise computer, be coupled in the scanner sub-component, the computer includes vision software, operable to be somebody's turn to do to download
The font of the electronic image of mark, the electronic image for associating the mark and desired electronic data and the associated mark of generation is retouched
State file；And
The computer is operable to describe file to the hand held scanner sub-component to upload the font, and the font describes file can be by
The processor is using to decode the successive image of the mark.
17. a kind of hand held scanner, including：
Scanner sub-component, the scanner sub-component includes vision sensor, is coupled in the processor and coupling of the vision sensor
Together in the memory of the processor；
User interface, is coupled in the scanner sub-component, and the user interface includes visual displays, the mark to be scanned for browsing
At least one of image scene of note, the visual displays is included in the browsable region of interest on the visual displays
Domain, the area-of-interest can make user position the hand held scanner for the optimal X-Y location of the hand held scanner；
Range finder, is coupled in the hand held scanner sub-component, and the range finder is predefined from the face extension one of the scanner sub-component
Distance, the predefined distance provides the best effort distance for scanning, and the face of the range finder from the scanner sub-component is basic
Extend parallel to the optical axis of the vision sensor；And
Vision software, can be by the computing device, and the vision software is operable to mark font file to decode digitally to explain
The successive image of the mark, the mark font file describes the mark.
18. hand held scanner according to claim 17：
The wherein vision software is operable digitally to associate the mark font file and desired electronic data and generate font
File is described, the font describes the successive image that file can be used for decoding the mark.
19. hand held scanner according to claim 17：
Wherein the mark font file is digitally explained to set up composite image file.
20. hand held scanner according to claim 19：
Wherein the composite image file is digitally associated with desired electronic data and describes file to generate the font.
21. hand held scanner according to claim 17：
Wherein the range finder includes the multiple finger pieces for extending from pedestal, and the pedestal couples are in the hand held scanner sub-component.
22. a kind of method for scanning mark on object, this method includes：
Hand held scanner is provided, the hand held scanner includes vision sensor, the processor for being coupled in the vision sensor, coupling
In the memory of the processor, user interface and range finder；
Visual displays is enabled on the user interface, and the visual displays is used at least one of scene for browsing the mark
Image；
The visual displays is observed, while the mobile hand held scanner is so that the visual displays shows at least one of the mark
The image scene divided；
Positioning is approaching or at least one of existing of the mark in the browsable area-of-interest on the visual displays
Field picture is fed back for alignment；
The hand held scanner is positioned so that the distal contact of the range finder or substantially close to the object；And
The vision software is digitally performed to explain mark font file and decode the successive image of the mark, the mark font
File describes the mark.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/885,065 US10068153B2 (en) | 2012-08-21 | 2015-10-16 | Trainable handheld optical character recognition systems and methods |
| US14/885,065 | 2015-10-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345812A (en) * | 2017-12-25 | 2018-07-31 | 阿里巴巴集团控股有限公司 | A kind of Scan orientation method, apparatus, equipment and system |
| CN111801680A (en) * | 2018-03-05 | 2020-10-20 | A9.com股份有限公司 | Visual feedback of process state |
| CN111868833A (en) * | 2018-03-06 | 2020-10-30 | 文塔纳医疗系统公司 | Digital pathology scanning interface and workflow |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239563A (en) * | 1996-11-01 | 1999-12-22 | C技术公司 | Recording method and appts. |
| EP2254325A1 (en) * | 2009-05-20 | 2010-11-24 | Dacuda AG | Image processing for handheld scanner |
| CN102682264A (en) * | 2011-01-31 | 2012-09-19 | 霍尼韦尔国际公司 | Method and apparatus for reading optical indicia using a plurality of data sources |
| CN102713930A (en) * | 2009-12-14 | 2012-10-03 | 李明述 | Handy scanner apparatus and control method thereof |
| CN102831372A (en) * | 2011-03-03 | 2012-12-19 | 手持产品公司 | Imager reader with hand gesture interface |
| CN103632151A (en) * | 2012-08-21 | 2014-03-12 | 康耐视公司 | Trainable handheld optical character recognition systems and methods |
-
2016
- 2016-10-13 DE DE102016119510.3A patent/DE102016119510A1/en active Granted
- 2016-10-17 CN CN201611079222.2A patent/CN106951894B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239563A (en) * | 1996-11-01 | 1999-12-22 | C技术公司 | Recording method and appts. |
| EP2254325A1 (en) * | 2009-05-20 | 2010-11-24 | Dacuda AG | Image processing for handheld scanner |
| CN102713930A (en) * | 2009-12-14 | 2012-10-03 | 李明述 | Handy scanner apparatus and control method thereof |
| CN102682264A (en) * | 2011-01-31 | 2012-09-19 | 霍尼韦尔国际公司 | Method and apparatus for reading optical indicia using a plurality of data sources |
| CN102831372A (en) * | 2011-03-03 | 2012-12-19 | 手持产品公司 | Imager reader with hand gesture interface |
| CN103632151A (en) * | 2012-08-21 | 2014-03-12 | 康耐视公司 | Trainable handheld optical character recognition systems and methods |
Non-Patent Citations (3)
| Title |
|---|
| MORTEN JØNSSON 等: "OCR-ALGORITHM FOR DETECTION OF SUBTITLES IN TELEVISION AND CINEMA", 《CONFERENCE & WORKSHOP ON ASSISTIVE TECHNOLOGIES FOR PEOPLE WITH VISION & HEARING IMPAIRMENTS》 * |
| R SANJEEV KUNTE 等: "A simple and efficient optical character recognition system for basic symbols in printed Kannada text", 《SA¯DHANA¯ 》 * |
| 郭晓松 等: "光电瞄准设备读数图像自动识别系统", 《 红外与激光工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345812A (en) * | 2017-12-25 | 2018-07-31 | 阿里巴巴集团控股有限公司 | A kind of Scan orientation method, apparatus, equipment and system |
| CN111801680A (en) * | 2018-03-05 | 2020-10-20 | A9.com股份有限公司 | Visual feedback of process state |
| CN111868833A (en) * | 2018-03-06 | 2020-10-30 | 文塔纳医疗系统公司 | Digital pathology scanning interface and workflow |
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| Publication number | Publication date |
|---|---|
| CN106951894B (en) | 2022-07-19 |
| DE102016119510A1 (en) | 2017-04-20 |
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