CN109190435A - A kind of device identifying invisible two-dimensional codes - Google Patents
A kind of device identifying invisible two-dimensional codes Download PDFInfo
- Publication number
- CN109190435A CN109190435A CN201810672820.3A CN201810672820A CN109190435A CN 109190435 A CN109190435 A CN 109190435A CN 201810672820 A CN201810672820 A CN 201810672820A CN 109190435 A CN109190435 A CN 109190435A
- Authority
- CN
- China
- Prior art keywords
- light
- invisible
- dimensional codes
- reflected
- wavelength
- 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.)
- Pending
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
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of devices for identifying invisible two-dimensional codes, including light source, camera lens, spectrophotometric device, at least two imaging sensors and processor, at least two different irradiation lights of the light source generation wavelength are irradiated in invisible two-dimensional codes, and the irradiation light is reflected to obtain the reflected light of at least two-way different wave length by invisible two-dimensional codes；The camera lens is for acquiring the reflected light and being directed to spectrophotometric device；The spectrophotometric device is for projecting the reflected light respectively to described image sensor；Described image sensor is for obtaining at least two groups bearing member, image data corresponding with the reflected light；The processor is used to obtain the recognition result of invisible two-dimensional codes according to the bearing member, image data of described image sensor output.The beneficial effects of the present invention are: invisible two-dimensional codes are identified suitable for multi-wavelength；Spectrophotometric device can separate the light of various different wave lengths, to project to the light of different wave length on different imaging sensors.
Description
Technical field
The present invention relates to invisible two-dimensional codes more particularly to a kind of devices for identifying invisible two-dimensional codes.
Background technique
Currently, at present two dimensional code identification, mainly by imaging sensor acquisition visible light, infrared, fluorescence single frames or
Multiple image, and carry out image decoding and obtain data.
These common invisible two-dimensional codes engines (identification mould group), all only acquire a spectrum picture, and carry out image solution
Code obtains decoding data, can mainly generate and interfere with each other in the projection on the imaging sensor of two dimensional code engine of not sharing the same light, in order to
The good image of single spectrum is obtained, so filtered before imaging sensor, allows on final image sensor and obtains most
Good target optical spectrum, and complete to decode by DSP.
Such as: stealthy infrared two dimensional code identifies engine, filters before sensor, only infrared light can project to image
Sensor, and other light completely filter.
For another example: concealed fluorescent two dimensional code filters before sensor, the ultraviolet or infrared light that engine itself is issued
It filters out, only retains them and excite the light of specific wavelength, project on imaging sensor.
But existing invisible two-dimensional codes can only read and decode a kind of spectrum two-dimensional code.Disclosed multispectral two dimensional code
Identification device and method are easy confusion, inaccurate to the identification of invisible two-dimensional codes.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention devises one kind and carries out suitable for multi-wavelength to invisible two-dimensional codes
The device of identification.
It is a kind of identify invisible two-dimensional codes device, including light source, camera lens, spectrophotometric device, at least two imaging sensors with
Processor,
The light source at least two irradiation lights different for generation wavelength, the irradiation light irradiate the invisible two-dimensional codes
When, at least two irradiation light is reflected to obtain the reflected light of at least two-way different wave length by the invisible two-dimensional codes；
The camera lens is for acquiring at least reflected light of two-way different wave length and being directed to the spectrophotometric device；
The spectrophotometric device is for projecting the reflected light of at least two-way different wave length respectively to described at least two
Imaging sensor；
At least two imaging sensor is corresponding extremely with the reflected light of at least two-way different wave length for obtaining
Few two groups of bearing member, image data；
At least two groups bearing member, image data that the processor is used to export according at least two imaging sensor obtain
Obtain the recognition result of the invisible two-dimensional codes.
Further, the spectrophotometric device includes at least one optical filtering light splitting piece, and the optical filtering light splitting piece is to two-way difference
The reflected light of wavelength is transmitted and is reflected respectively.
Further, at least one described optical filtering light splitting piece includes the first optical filtering light splitting piece and the second optical filtering light splitting piece, institute
The angle stated between the first optical filtering light splitting piece and the second optical filtering light splitting piece is less than 180 degree.
Further, three kinds of different irradiation lights of the light source generation wavelength, including visible light, the first infrared light and second
Infrared light, for the wavelength of first infrared light less than the wavelength of the second infrared light, first infrared light and the second infrared light are saturating
The first optical filtering light splitting piece is crossed, the visible light is projected on the image of induction visible light after reflecting via the first optical filtering light splitting piece
On sensor, the second optical filtering light splitting piece described in first infrared light is projected on the imaging sensor of the first infrared light of induction
On, second infrared light is projected on the imaging sensor of the second infrared light of induction after reflecting via the second optical filtering light splitting piece.
Further, the spectrophotometric device includes semi-transparent semi-reflecting glass and two optical filters, the semi-transparent semi-reflecting glass pair
The reflected light of two-way different wave length is transmitted and is reflected respectively, is distinguished from the semi-transparent semi-reflecting glass transmission with the light reflected
Two imaging sensors are projected to after the optical filtering of described two optical filters.
Further, the optical filter is monochromatic filter or narrow band filter.
Further, the spectrophotometric device includes two semi-transparent semi-reflecting glass and three optical filters, and described two semi-transparent half
Angle between anti-glass is less than 180 degree, and described two semi-transparent semi-reflecting glass respectively distinguish the reflected light of three different wave lengths
It is reflected and is reflected, filtered respectively through three optical filters from described two semi-transparent semi-reflecting glass transmissions with the light reflected
After project to three imaging sensors.
Further, the processor is electrically connected the light source, and the processor controls the starting of the light source.
Further, at least two groups bearing member, image number that the processor is exported according at least two imaging sensor
Include: according to the recognition result for obtaining the invisible two-dimensional codes
After the processor is synthesized at least two groups bearing member, image data, further decoding obtains the stealthy two dimension
The recognition result of code；Or after each group of at least two groups bearing member, image data is decoded by the processor, then close
At the recognition result for obtaining the invisible two-dimensional codes.
A method of identification invisible two-dimensional codes, comprising:
Step 1: the light source generates the different irradiation light of at least two wavelength, the different photograph of at least two wavelength
When penetrating the light irradiation invisible two-dimensional codes, at least two wavelength difference irradiation light reflect by the invisible two-dimensional codes
The reflected light different at least two wavelength；
Step 2: the different reflected light of at least two wavelength that the camera lens acquisition reflection obtains simultaneously is directed to described
Spectrophotometric device；
Step 3: the spectrophotometric device projects the different reflected light of at least two wavelength respectively to described at least two
A imaging sensor；
Step 4: it is corresponding that at least two imaging sensor obtains the reflected light different from least two wavelength
At least two groups bearing member, image data；
Step 5: at least two groups bearing member, image data that the processor is exported according at least two imaging sensor
Obtain the recognition result of the invisible two-dimensional codes.
Compared with prior art, the beneficial effect of present pre-ferred embodiments is:
Invisible two-dimensional codes are identified suitable for multi-wavelength；Spectrophotometric device can separate the light of various different wave lengths
Out, to project to the light of different wave length on different imaging sensors, different imaging sensors can sense that its is right
The light for the wavelength answered will not cause confusion, and the bearing member, image data of the different groups of different imaging sensor output are convenient for
The recognition result of processor acquisition invisible two-dimensional codes.
Detailed description of the invention
Fig. 1 is the schematic diagram of the device of the identification invisible two-dimensional codes of one embodiment of the invention；
Fig. 2 is the schematic diagram that two light sources of one embodiment of the invention identify the device of two dimensional code；
Fig. 3 is the schematic diagram that three light sources of one embodiment of the invention identify the device of two dimensional code；
Fig. 4 is the schematic diagram of another spectrophotometric device of one embodiment of the invention；
Fig. 5 is the schematic diagram of another two kinds of spectrophotometric devices of one embodiment of the invention.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
As shown in Figure 1, a kind of device for identifying invisible two-dimensional codes of a preferred embodiment of the invention, including light source 10, mirror
First 11, spectrophotometric device 12, at least two imaging sensors 13 and processor 14, light source 10 are used for different at least two of generation wavelength
Kind irradiation light, when irradiation light irradiates invisible two-dimensional codes, at least two irradiation lights are reflected to obtain at least two by invisible two-dimensional codes
The reflected light of road different wave length；Camera lens 11 is for acquiring at least reflected light of two-way different wave length and being directed to spectrophotometric device 12；
Spectrophotometric device 12 is for projecting the reflected light of at least two-way different wave length respectively at least two imaging sensors 13；At least two
A imaging sensor 13 is for obtaining at least two groups bearing member, image data corresponding with the reflected light of at least two-way different wave length；Place
Device 14 is managed to be used to obtain invisible two-dimensional codes according at least two groups bearing member, image data of at least two imaging sensors 13 output
Recognition result.
Specifically, as shown in Fig. 2, invisible two-dimensional codes include so that light source 10 includes visible light source and infrared light supply as an example
It is infrared to penetrate ink Printing Zone and infrared absorbing inks Printing Zone.When light source 10 is irradiated on invisible two-dimensional codes, it is seen that illumination
It is mapped to infrared through ink Printing Zone, reflection visible light；Infrared light penetrates infrared transmission ink Printing Zone, is radiated at infrared absorption
On ink Printing Zone, infrared light is largely absorbed, does not print infrared absorbing inks Printing Zone reflection infrared light.The visible light of reflection with
Infrared light, by the acquisition and projection of camera lens 11, into spectrophotometric device 12.By the infrared light of spectrophotometric device 12, figure is projected to
As in sensors A；By the visible light that spectrophotometric device 12 reflects, it is projected on imaging sensor B；Imaging sensor A is induction
The imaging sensor of infrared light, imaging sensor B are the imaging sensor for incuding visible light.Processor 14 is respectively to image sensing
The two groups of bearing member, image data obtained on device A and B are handled, finally by the I/O port output invisible two dimensional code of processor 14
Recognition result.
In the present embodiment, spectrophotometric device 12 includes at least one optical filtering light splitting piece, and optical filtering light splitting piece is to two-way different wave length
Reflected light transmitted and reflected respectively.At least one optical filtering light splitting piece includes the first optical filtering light splitting piece 1 and the second optical filtering point
Mating plate 2, the angle between the first optical filtering light splitting piece 1 and the second optical filtering light splitting piece 2 are less than 180 degree, can make the anti-of separation in this way
It penetrates light all to project on imaging sensor 13, will not cause confusion.
In the present embodiment, three kinds of different irradiation lights of 10 generation wavelength of light source, including visible light, the first infrared light and second
Infrared light, the wavelength of the first infrared light less than the wavelength of the second infrared light, filter by the first infrared light and the second infrared light first
Light light splitting piece 1, it is seen that light is projected on the imaging sensor E of induction visible light after reflecting via the first optical filtering light splitting piece 1, and first
The light splitting 2 that filters of infrared light second is projected on the imaging sensor G of the first infrared light of induction, and the second infrared light is via the
It is projected on the imaging sensor F of the second infrared light of induction after the reflection of two optical filtering light splitting pieces 2.
Specifically, the first infrared light is preferably 940 as shown in figure 3, the first infrared light is preferably 850 nanometers of infrared light
The infrared light of nanometer, imaging sensor 13 are three imaging sensors for incuding three kinds of wavelength lights, it is seen that illumination is mapped to infrared
Through ink Printing Zone, visible light is reflected, 850 nanometers of infrared light penetrates infrared transmission ink Printing Zone, is radiated at 850 nanometers
Infrared Absorption ink Printing Zone on, a large amount of infrared lights for absorbing 850 nanometers do not print 850 nanometers of infrared Absorption oil
The infrared light of 850 nanometers of reflection at ink；940 nanometers of infrared light penetrates 850 nanometers of infrared light ink Printing Zone, irradiation
On the pattern that 940 nanometers of infrared Absorption ink print, a large amount of infrared lights for absorbing 940 nanometers do not print 940 nanometers
Emit 940 nanometers of infrared light at infrared Absorption ink.The visible light of two dimensional code reflection, 940 is received 850 nanometers of infrared light
The infrared light of rice, by the acquisition and projection of camera lens 11, into the first optical filtering light splitting piece 1, characteristic is 780 nanometers or more red
Outer light can be with 90% or more transmitance, and visible light then 90% mirror-reflection, to realize infrared light and visible light light-splitting；And the
Two optical filtering light splitting pieces 2, the infrared light that characteristic is 940 nanometers or more can be with 90% or more transmitances, and 850 nanometers of infrared light
Then 90% mirror-reflection.By the visible light that the first optical filtering light splitting piece 1 reflects, it is projected on imaging sensor E；By the second filter
850 nanometers of infrared light of light light splitting piece 2, projects on imaging sensor F；It filters by the first optical filtering light splitting piece 1 and second
940 nanometers of infrared light of light splitting piece 2, is projected on imaging sensor G.
In the present embodiment, spectrophotometric device 12 includes semi-transparent semi-reflecting glass and two optical filters, and semi-transparent semi-reflecting glass is to two-way
The reflected light of different wave length is transmitted and is reflected, and the light for transmiting and reflecting from semi-transparent semi-reflecting glass is respectively through two optical filters
Two imaging sensors are projected to after optical filtering.Optical filter is monochromatic filter or narrow band filter.
Specifically, as shown in Figures 4 and 5, when light source is fluorescence, carrying out light-splitting processing using semi-transparent semi-reflecting glass, partly
50% black light is penetrated, then is projected on imaging sensor C by the monochromatic filter of black light by saturating half anti-glass；
Other 50% visible light is reflected, then is projected on imaging sensor D by the monochromatic filter of visible light.When light source is more
When the light of kind wavelength, semi-transparent semi-reflecting glass penetrates 50% black light, then is projected by the narrow band filter of black light
Onto imaging sensor C；Other 50% visible light is reflected, then projects to image sensing by the narrow band filter of visible light
On device D.
In the present embodiment, spectrophotometric device 12 include two semi-transparent semi-reflecting glass and three optical filter (not shown)s, two
Angle between a semi-transparent semi-reflecting glass is less than 180 degree, and two semi-transparent semi-reflecting glass are respectively by the reflected light of three different wave lengths
It is reflected and is reflected respectively, thrown after three optical filters filter respectively from two semi-transparent semi-reflecting glass transmissions with the light reflected
Shadow is to three imaging sensors.
In the present embodiment, processor 14 is electrically connected light source 10, and processor 14 controls the starting of light source 10.When processor 14 touches
When hair, at least two different irradiation lights of starting 10 generation wavelength of light source.
In the present embodiment, at least two groups bearing member, image data that processor 14 is exported according at least two imaging sensors 13
Obtain invisible two-dimensional codes recognition result include:
After processor 14 is synthesized at least two groups bearing member, image data, further decoding obtains the identification knot of invisible two-dimensional codes
Fruit；Or after each group of at least two groups bearing member, image data is decoded by processor 14, then synthesize acquisition invisible two-dimensional codes
Recognition result.
A method of identification invisible two-dimensional codes, comprising:
Step 1: light source 10 generates the different irradiation light of at least two wavelength, and the different irradiation light of at least two wavelength is shone
When penetrating invisible two-dimensional codes, invisible two-dimensional codes are reflected the different irradiation light of at least two wavelength to obtain at least two wavelength not
Same reflected light；
Step 2: the acquisition of camera lens 11 reflects the obtained different reflected light of at least two wavelength and is directed to spectrophotometric device；
Step 3: spectrophotometric device 12 projects the different reflected light of at least two wavelength respectively at least two image sensings
Device 13；
Step 4: at least two imaging sensors 13 obtain the reflected light corresponding at least two different from least two wavelength
Group bearing member, image data；
Step 5: processor 14 is obtained according at least two groups bearing member, image data that at least two imaging sensors 13 export
The recognition result of invisible two-dimensional codes.
In the present embodiment, the above embodiment is only the preferred embodiment of the present invention, cannot limit the present invention with this
The range of protection, the variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to
In scope of the present invention.
Claims (10)
1. a kind of device for identifying invisible two-dimensional codes, which is characterized in that including light source, camera lens, spectrophotometric device, at least two images
Sensor and processor,
The light source at least two irradiation lights different for generation wavelength, when the irradiation light irradiates the invisible two-dimensional codes,
At least two irradiation light is reflected to obtain the reflected light of at least two-way different wave length by the invisible two-dimensional codes；
The camera lens is for acquiring at least reflected light of two-way different wave length and being directed to the spectrophotometric device；
The spectrophotometric device is for projecting the reflected light of at least two-way different wave length respectively at least two image
Sensor；
At least two imaging sensor is used to obtain the reflected light corresponding at least two at least two-way different wave length
Group bearing member, image data；
At least two groups bearing member, image data that the processor is used to export according at least two imaging sensor obtain institute
State the recognition result of invisible two-dimensional codes.
2. the device of identification invisible two-dimensional codes according to claim 1, which is characterized in that the spectrophotometric device includes at least
One optical filtering light splitting piece, the optical filtering light splitting piece are transmitted and are reflected respectively to the reflected light of two-way different wave length.
3. the device of identification invisible two-dimensional codes according to claim 2, which is characterized in that at least one described light splitting that filters
Piece includes the first optical filtering light splitting piece and the second optical filtering light splitting piece, between the first optical filtering light splitting piece and the second optical filtering light splitting piece
Angle is less than 180 degree.
4. the device of identification invisible two-dimensional codes according to claim 3, which is characterized in that the light source generation wavelength is different
Three kinds of irradiation lights, including visible light, the first infrared light and the second infrared light, the wavelength of first infrared light be red less than second
The wavelength of outer light, the first optical filtering light splitting piece described in first infrared light and the second infrared light, the visible light is via
It is projected on the imaging sensor of induction visible light after the reflection of one optical filtering light splitting piece, the second filter described in first infrared light
Light light splitting piece is projected on the imaging sensor of the first infrared light of induction, and second infrared light is anti-via the second optical filtering light splitting piece
It is projected on after penetrating on the imaging sensor of the second infrared light of induction.
5. the device of identification invisible two-dimensional codes according to claim 2, which is characterized in that the spectrophotometric device includes semi-transparent
Half anti-glass and two optical filters, the semi-transparent semi-reflecting glass reflected light of two-way different wave length is carried out respectively transmission with it is anti-
It penetrates, projects to two images after the optical filtering of described two optical filters respectively with the light reflected from the semi-transparent semi-reflecting glass transmission
Sensor.
6. the device of identification invisible two-dimensional codes according to claim 5, which is characterized in that the optical filter is monochromatic filters
Piece or narrow band filter.
7. the device of identification invisible two-dimensional codes according to claim 5, which is characterized in that the spectrophotometric device includes two
Semi-transparent semi-reflecting glass and three optical filters, the angle between described two semi-transparent semi-reflecting glass is less than 180 degree, described two semi-transparent
The reflected light of three different wave lengths is reflected and is reflected respectively respectively by half anti-glass, saturating from described two semi-transparent semi-reflecting glass
The light penetrated and reflected projects to three imaging sensors after three optical filters optical filtering respectively.
8. the device of identification invisible two-dimensional codes according to claim 1, which is characterized in that described in the processor electrical connection
Light source, the processor control the starting of the light source.
9. the device of identification invisible two-dimensional codes according to claim 1, which is characterized in that the processor foundation is described extremely
The recognition result that at least two groups bearing member, image data of few two imaging sensors output obtain the invisible two-dimensional codes includes:
After the processor is synthesized at least two groups bearing member, image data, further decoding obtains the invisible two-dimensional codes
Recognition result；Or after each group of at least two groups bearing member, image data is decoded by the processor, then synthesizes and obtain
Obtain the recognition result of the invisible two-dimensional codes.
10. a method of identification invisible two-dimensional codes characterized by comprising
Step 1: the light source generates the different irradiation light of at least two wavelength, the different irradiation light of at least two wavelength
When irradiating the invisible two-dimensional codes, the invisible two-dimensional codes by at least two wavelength difference irradiation light reflected to obtain to
The different reflected light of few two kinds of wavelength；
Step 2: the camera lens acquisition reflects the obtained different reflected light of at least two wavelength and is directed to the light splitting
Mechanism；
Step 3: the spectrophotometric device projects the different reflected light of at least two wavelength respectively at least two figure
As sensor；
Step 4: it is corresponding at least that at least two imaging sensor obtains the reflected light different from least two wavelength
Two groups of bearing member, image data；
Step 5: the processor is obtained according at least two groups bearing member, image data that at least two imaging sensor exports
The recognition result of the invisible two-dimensional codes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672820.3A CN109190435A (en) | 2018-06-26 | 2018-06-26 | A kind of device identifying invisible two-dimensional codes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672820.3A CN109190435A (en) | 2018-06-26 | 2018-06-26 | A kind of device identifying invisible two-dimensional codes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109190435A true CN109190435A (en) | 2019-01-11 |
Family
ID=64948509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810672820.3A Pending CN109190435A (en) | 2018-06-26 | 2018-06-26 | A kind of device identifying invisible two-dimensional codes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109190435A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386452B1 (en) * | 1998-11-26 | 2002-05-14 | Fuji Photo Film Co., Ltd. | Image reading device with improved controller |
| US20060102713A1 (en) * | 2004-11-15 | 2006-05-18 | Chiang Kuo C | Multi-function portable communication device |
| CN102326170A (en) * | 2009-02-20 | 2012-01-18 | 数据逻辑扫描公司 | Systems and methods of optical code reading using color imager |
| CN204731794U (en) * | 2015-06-23 | 2015-10-28 | 山东华菱电子股份有限公司 | Colour barcode reading device |
| CN105190654A (en) * | 2013-03-21 | 2015-12-23 | 日本发条株式会社 | Identification medium, code information reading method, code information reading device, identification medium manufacturing method, and identification medium manufacturing device |
| CN108133164A (en) * | 2018-02-09 | 2018-06-08 | 上海川光信息科技有限公司 | A kind of multidimensional spectrum bar code recognition instrument |
-
2018
- 2018-06-26 CN CN201810672820.3A patent/CN109190435A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386452B1 (en) * | 1998-11-26 | 2002-05-14 | Fuji Photo Film Co., Ltd. | Image reading device with improved controller |
| US20060102713A1 (en) * | 2004-11-15 | 2006-05-18 | Chiang Kuo C | Multi-function portable communication device |
| CN102326170A (en) * | 2009-02-20 | 2012-01-18 | 数据逻辑扫描公司 | Systems and methods of optical code reading using color imager |
| CN105190654A (en) * | 2013-03-21 | 2015-12-23 | 日本发条株式会社 | Identification medium, code information reading method, code information reading device, identification medium manufacturing method, and identification medium manufacturing device |
| CN204731794U (en) * | 2015-06-23 | 2015-10-28 | 山东华菱电子股份有限公司 | Colour barcode reading device |
| CN108133164A (en) * | 2018-02-09 | 2018-06-08 | 上海川光信息科技有限公司 | A kind of multidimensional spectrum bar code recognition instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7046346B2 (en) | Optoelectronic document reader for reading UV / IR visible indicia | |
| CN101699844B (en) | Full-spectrum identification image sensor | |
| CN103646333A (en) | Anti-fake detection method, device and system | |
| US20080149720A1 (en) | Barcode environment enhancement | |
| CN102803929B (en) | multispectral scanning system | |
| CN102103685A (en) | Optical fingerprint identification device with living body scanning function and identification method | |
| CA2375577C (en) | Optoelectronic document reader for reading uv / ir visible indicia | |
| TW200839215A (en) | Image-acquiring system with high-spectrum resolution and method for the same | |
| CN111540084B (en) | Fingerprint lock with true and false fingerprint identification function and identification method thereof | |
| CN109190435A (en) | A kind of device identifying invisible two-dimensional codes | |
| WO2017027588A1 (en) | System and method for illuminating and identifying an object | |
| CN101478847A (en) | Light emission system and method for changing backlight color | |
| CN205485034U (en) | Coaxial camera of laser | |
| CN105784113B (en) | Distinguish the imaging system and method for fluorescence emission spectrum image and reflection spectrum images | |
| CN208187948U (en) | Reflective multi-wavelength line scans confocal imaging system | |
| CN105122314A (en) | Image-capturing system for capturing images of a feature of an identification document | |
| JP2007208908A (en) | Scanner device | |
| CN202599838U (en) | Portable multi-wave-band combination light source mark check meter | |
| CN102184394A (en) | Method and device for revealing and extracting scene potential fingerprint | |
| CN211927701U (en) | Imaging system suitable for multiple detection of biomolecules | |
| CN115629507B (en) | Method for identifying authenticity of file writing and patterns | |
| CN105354911A (en) | Image scanning method and image scanning device | |
| CN105678205A (en) | Image type bar code scanning equipment | |
| CN106778600A (en) | Face identification device based on uniform source of light | |
| CN117373336A (en) | Identification method for optical password anti-counterfeiting traceability technology |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |
|
| RJ01 | Rejection of invention patent application after publication |