CN109598173B - Scanning device and scanning method thereof - Google Patents
Scanning device and scanning method thereof Download PDFInfo
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- CN109598173B CN109598173B CN201811388545.9A CN201811388545A CN109598173B CN 109598173 B CN109598173 B CN 109598173B CN 201811388545 A CN201811388545 A CN 201811388545A CN 109598173 B CN109598173 B CN 109598173B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/146—Methods for optical code recognition the method including quality enhancement steps
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
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Abstract
The invention provides a scanning device and a scanning method, wherein the scanning device is used for scanning a mixed code, the mixed code comprises a hidden code and a bar code adjacent to the hidden code, the hidden code is irradiated by infrared rays or ultraviolet rays to generate a latent image, and the scanning device is characterized by comprising: a first illumination source for emitting infrared or ultraviolet rays; the first camera is matched with the first illumination source and used for collecting the invisible codes; a second illumination source to emit visible light; the second camera is matched with the second illumination source and used for collecting the bar code; the main control chip controls the first illumination source and the second illumination source to periodically and alternately emit light, correspondingly, the first camera and the second camera periodically and alternately read the invisible codes and the bar codes, so that the invisible codes and the bar codes are almost synchronously read without manual switching, the operation is simple, and the efficiency is improved.
Description
Technical Field
The present invention relates to a scanning apparatus and a scanning method, and more particularly, to a scanning apparatus and a scanning method for scanning a hybrid code including a secret code.
Background
The anti-counterfeiting technology is an important means for preventing counterfeit and shoddy products, and is widely applied to the field of production of various products at present. The anti-fake method with low cost and convenient use. The anti-counterfeiting code generally adopts a specific encryption algorithm to encrypt the information stored in the bar code to form a plain code, which is easy to identify and crack and has poor anti-counterfeiting effect. The anti-counterfeiting code formed by combining the plain code and the ultraviolet fluorescent code is designed on the basis in the industry, the anti-counterfeiting effect of the anti-counterfeiting code is good, however, the anti-counterfeiting code needs to simultaneously read the plain code and the fluorescent code, the reading difficulty is high, the contrast between the bar code of the fluorescent code and the background is poor, the identification difficulty is further increased, and no suitable reading equipment is available at the present stage to conveniently read the anti-counterfeiting code.
The present invention addresses the above problems by providing a new scanning apparatus and scanning method, and adopting new methods and technical means to solve these problems.
Disclosure of Invention
In view of the problems in the background art, an object of the present invention is to provide a scanning apparatus and a scanning method, in which a main control chip controls a first camera and a second camera to alternately read invisible codes and bar codes, so as to improve the code scanning speed of mixed codes and simplify the operation.
In order to achieve the purpose, the invention adopts the following technical means:
the invention provides a scanning device, which is used for scanning a mixed code, wherein the mixed code comprises a hidden code and a bar code adjacent to the hidden code, and the hidden code is irradiated by infrared rays or ultraviolet rays to generate a latent image; the scanning device includes:
a first irradiation light source for emitting infrared rays or ultraviolet rays;
the first camera is matched with the first irradiation light source and used for collecting the invisible codes;
a second irradiation light source for emitting visible light;
the second camera is matched with the second irradiation light source and used for collecting the bar code;
the main control chip is used for controlling the first irradiation light source and the second irradiation light source to periodically and alternately emit light and decoding the invisible codes and the bar codes; wherein:
the master control chip controls the first camera to collect the invisible codes when the first illumination source emits light, and the master control chip controls the second camera to collect the bar codes when the second illumination source emits light.
Optionally, the first camera collects the invisible code and has a first depth of field, the second camera collects the barcode and has a second depth of field, and the first depth of field and the second depth of field are approximately overlapped.
Optionally, the first illumination source is relatively far away from the first camera and close to the second camera, and the second illumination source is relatively far away from the second camera and close to the first camera.
Optionally, the invisible code includes a plurality of coding units, and each of the coding units is capable of decoding the same content by the main control chip.
Optionally, the invisible code surrounds the bar code, the bar code is a tracing code, the invisible code is an anti-counterfeiting code matched with the bar code, and the invisible code and the content of the bar code are mutually certified.
Optionally, the first irradiation light source is a UV lamp, and the first camera is an ultraviolet camera to collect ultraviolet rays reflected by the invisible code;
the invisible code includes a pattern portion and a blank portion, one of which absorbs ultraviolet rays and the other of which reflects ultraviolet rays.
The invention also provides a scanning device control method, which is used for scanning a mixed code, wherein the mixed code comprises a hidden code and a bar code adjacent to the hidden code, the hidden code is irradiated by infrared rays or ultraviolet rays to generate a latent image, and the scanning method comprises the following steps:
controlling the first irradiation light source to emit or stop emitting any one of infrared rays and ultraviolet rays; when a first irradiation light source emits infrared rays or ultraviolet rays, controlling the first camera to collect the invisible codes;
when the first illuminating light source stops emitting infrared rays or ultraviolet rays, controlling the second illuminating light source to emit visible light and controlling the second camera to read the bar code;
and stopping the execution steps when the decoding of the invisible codes and the bar codes is successful.
Optionally, the method further includes: the first camera collects multi-frame images of the invisible code within a single light-emitting time of the first illumination source, and when one frame image is successfully decoded or when none of the multi-frame images is successfully decoded, the first illumination light source is controlled to stop emitting light.
Optionally, the method further includes: and controlling the first camera to collect the invisible code with a first depth of field, and controlling the second camera to collect the bar code with a second depth of field, wherein the first depth of field and the second depth of field are approximately overlapped.
Optionally, the first camera is an ultraviolet camera, and is controlled to collect ultraviolet rays reflected by the invisible code; wherein the content of the first and second substances,
the invisible code includes a pattern portion and a blank portion, one of which absorbs ultraviolet rays and the other of which reflects ultraviolet rays.
Compared with the prior art, the invention has the following beneficial effects:
in the scanning device and the scanning method provided by the invention, the main control chip controls the first illumination source and the second illumination source to periodically and alternately emit light, and correspondingly, the first camera and the second camera periodically and alternately read the invisible codes and the bar codes, so that the invisible codes and the bar codes are almost synchronously read without manual switching, the operation is simple, and the efficiency is improved.
Drawings
FIG. 1 is a perspective view of a scanning device in accordance with the present invention;
FIG. 2 is a diagram of a hybrid code in the present invention;
FIG. 3 is a diagram of a coding unit of the invisible code in the present invention;
FIG. 4 is a schematic view of the scan module shown in FIG. 1;
FIG. 5 is a schematic view of the scan module shown in FIG. 4 mounted on a motherboard;
FIG. 6 is a schematic diagram showing the relative position relationship between the camera and the hybrid code according to the present invention;
FIG. 7 is a flowchart illustrating the scanning of the hybrid code by the scanning device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the scanning device 100 of the present invention is a handheld terminal (PDA), and in other embodiments (not shown), the scanning device 100 may be a scanner or a stationary scanner, etc. which is connected to a display through a data line for displaying scanning information.
Referring again to fig. 1, the scanning device 100 has a housing 1 and a scanning module 2 embedded in a scanning window 11 at the bottom of the housing 1, and a display 3 is disposed on the front surface of the housing 1 and occupies almost the entire front surface of the housing 1. The scanning apparatus 100 is used to scan a hybrid code B as shown in fig. 3.
Referring to fig. 2 and 3 again, the hybrid code B includes a barcode B1 and a crypto code B2 disposed around the barcode B1. The bar code B1 is a QR code and is used for tracing the source of an article, and the invisible code B2 generates a latent image under the irradiation of ultraviolet rays and is used for preventing counterfeiting. The invisible code B2 comprises a plurality of identical coding units B21, each coding unit B21 can decode identical anti-counterfeiting contents, and the anti-counterfeiting codes can still be read when large-area defects exist. Meanwhile, each of the coding units B21 includes a pattern portion B22 and a blank portion B23 made of different materials, one of the two portions is made of an ultraviolet absorbing material to absorb ultraviolet rays, and the other portion is made of a common material or an ultraviolet reflecting material to reflect ultraviolet rays, preferably, the pattern portion B22 absorbs ultraviolet rays and the blank portion B23 reflects ultraviolet rays, so that when the invisible code B2 is irradiated by ultraviolet rays, the pattern portion B22 and the blank portion B23 generate strong contrast and are easily read by the scanning device 100. In this embodiment, the pattern portions B22 are circular patterns having the same size, but in other embodiments (not shown), the size of the pattern portions may be different, or may be other patterns such as triangular or square patterns. In other embodiments, the barcode B1 can be a one-dimensional code or a two-dimensional code with other codes, and the invisible code B2 can be irradiated by infrared rays to generate a latent image.
As shown in fig. 4, the scanning module 2 includes two cameras disposed opposite to each other in the left-right direction, and two illumination sources for light supplement respectively disposed on the left and right sides of the two cameras.
As shown in fig. 5 and 6, the two cameras include one first camera 21 provided on the left side and one second camera 22 provided on the right side in opposition. The first camera 21 is an ultraviolet camera and is used for recognizing and reading the invisible code B2, and the invisible code B2 collected by the first camera 21 has a first depth of field L1; the second camera 22 is a black-and-white camera for reading the barcode B1, the barcode B1 collected by the second camera 22 has a second depth of field L2, and the first depth of field L1 substantially overlaps with the second depth of field L2. Therefore, the scanning device 100 can simultaneously read the invisible code B2 and the bar code B1 at the same distance from the invisible code B2 and the bar code B1, the scanning device 100 does not need to move back and forth again to adjust the distance, the scanning speed is increased, and the operation is convenient; in the present embodiment, the second depth of field L2 is included in the first depth of field L1.
In this embodiment, the first camera 21 is made of an ultraviolet sensor 211 and a lens module 212, which is sensitive to ultraviolet light with a wavelength of 200-360nm, and the second camera 22 is made of a black-and-white image sensor 221 and a lens module 223 with an infrared cut-off filter 222, which is sensitive to visible light with a wavelength of 400-650 nm. In other embodiments (not shown, the same applies below), the first camera 21 can be made of a common black and white camera and a lens module with an ultraviolet filter.
As shown in fig. 4 and 5, the two illumination sources include a first illumination source 23 disposed on the right side and a second illumination source 24 disposed on the left side in opposition. The first illumination source 23 is relatively far from the first camera 21 and close to the second camera 22, and the second illumination source 24 is relatively far from the second camera 22 and close to the first camera 21, so that the illumination light emitted by the illumination source of the transparent sheet of the scanning window 11 can be prevented from being directly reflected into the corresponding camera. The first illumination source 23 is a UV lamp for emitting ultraviolet rays, and the first illumination source 23 is a general LED lamp for emitting visible light, preferably white light.
As shown in fig. 5, the scanning module 2 is disposed on a main board 4, and is electrically connected to a main control chip 5 disposed on the main board 4, the main control chip 5 is configured to receive and decode the image signal of the mixed code B, and then display the decoded information on the display screen 3.
As shown in fig. 7, specifically, the scanning apparatus 100 reads the hybrid code B by the following method, which includes the following steps:
s100, controlling the first irradiation light source to emit or stop emitting any one of infrared rays and ultraviolet rays; when a first irradiation light source emits infrared rays or ultraviolet rays, controlling the first camera to collect the invisible codes;
s200, when the first irradiation light source stops emitting infrared rays or ultraviolet rays, controlling the second illumination light source to emit visible light and controlling the second camera to read the bar code;
s300: and stopping the execution steps when the decoding of the invisible codes and the bar codes is successful.
In an embodiment, the first camera acquires multi-frame images of the invisible code within a single lighting time of the first illumination source, and when one frame image is successfully decoded or none of the multi-frame images is successfully decoded, the first illumination light source is controlled to stop lighting.
In one embodiment, the first camera is controlled to acquire the invisible code with a first depth of field, and the second camera is controlled to acquire the bar code with a second depth of field, wherein the first depth of field and the second depth of field are approximately overlapped.
Further, the first camera is an ultraviolet camera, and is controlled to collect ultraviolet rays reflected by the invisible codes; wherein the content of the first and second substances,
the invisible code includes a pattern portion and a blank portion, one of which absorbs ultraviolet rays and the other of which reflects ultraviolet rays.
In the following, the method is described in an embodiment, and the scanning apparatus performs the scanning of the mixed code in fig. 3 by using the following scanning steps:
A. the main control chip 5 controls the first illumination source 23 to emit ultraviolet rays to supplement light and irradiate the mixed code B, so that the invisible code B2 generates a latent image.
B. Almost at the same time as step a, the main control chip 5 controls the first camera 21 to read the invisible code B2.
C. The first camera 21 converts the collected multiframe images of the invisible codes B2 into digital signals one by one and transmits the digital signals to the main control chip 5 one by one, and the main control chip 5 decodes the multiframe image signals of the invisible codes B2 in sequence.
When the main control chip 5 successfully decodes one or more frames of images of the invisible code B2, the next step is performed.
D. The main control chip 5 controls the first illumination source 23 to stop emitting light and controls the first camera 21 to stop reading the invisible code B2.
E. The main control chip 5 controls the second illumination source 24 to emit visible light, preferably white light.
F. Almost simultaneously with step E, the main control chip 5 controls the second camera 22 to read the barcode B1.
G. The second camera 22 converts the collected multi-frame images of the barcode B1 into digital signals one by one and transmits the digital signals to the main control chip 5 one by one, and the main control chip 5 decodes the multi-frame image signals of the barcode B1 in sequence.
When the main control chip 5 successfully decodes one or more frames of images of the barcode B1, the next step is performed.
H. The main control chip 5 controls the second illumination source 24 to stop emitting light and controls the second camera 22 to stop reading the bar code B1.
If the invisible code is not recognized, repeating the step A to the step C; and D, repeating the steps E to G if the bar code is not identified. If both codes in the mixed code are identified, repeating the steps A to H until the invisible code B2 and the bar code B1 are successfully decoded.
Specifically, when neither the invisible code B2 nor the barcode B1 is successfully decoded, the steps a to H are repeated; when the crypto-code B2 was successfully decoded and the barcode B1 was not successfully decoded, then steps E through G until the barcode B1 was successfully decoded; when the barcode B1 was successfully decoded and the crypto-code B2 was not successfully decoded, then steps a through C until the crypto-code B2 was successfully decoded. When the master control chip 5 successfully decodes both the invisible code B2 and the bar code B1, the master control chip synchronously displays the successfully decoded information on the display screen 3.
The barcode B1 in this embodiment can be scanned by a general user to trace the source, and the invisible code B2 needs to be read by the dedicated scanning device 100 in the present invention, so the invisible code B2 can be used by a professional to identify the authenticity, and the barcode B1 plays a role in positioning the invisible code B2, so that the professional can determine the position of the invisible code B2, and the contents of the barcode B1 and the anti-counterfeit code are mutually certified, thereby playing a secondary anti-counterfeit role.
The scanning device and the description module thereof have the following beneficial effects:
1. the main control chip 5 controls the first illumination source 23 and the second illumination source 24 to periodically and alternately emit light, correspondingly, the first camera 21 and the second camera 22 periodically and alternately read the invisible code B2 and the bar code B1, so that the invisible code B2 and the bar code B1 are almost synchronously read without manual switching, the operation is simple, and the efficiency is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A scanning apparatus for scanning a hybrid code, the hybrid code including a covert code and a bar code adjacent to the covert code, the covert code being exposed to infrared or ultraviolet radiation to produce a latent image, comprising:
a first irradiation light source for emitting infrared rays or ultraviolet rays;
the first camera is matched with the first irradiation light source and used for collecting the invisible codes;
a second irradiation light source for emitting visible light;
the second camera is matched with the second irradiation light source and used for collecting the bar code;
the first irradiation light source is relatively far away from the first camera and close to the second camera, and the second irradiation light source is relatively far away from the second camera and close to the first camera;
the main control chip is used for controlling the first irradiation light source and the second irradiation light source to periodically and alternately emit light and decoding the invisible codes and the bar codes; wherein:
the main control chip controls the first camera to collect the invisible code when the first irradiation light source emits light, and the main control chip controls the second camera to collect the bar code when the second irradiation light source emits light;
the first camera collects the invisible code and has a first depth of field, the second camera collects the bar code and has a second depth of field, and the first depth of field and the second depth of field are approximately overlapped;
the hidden code comprises a plurality of coding units, each coding unit can be decoded by the main control chip to obtain the same content, the hidden code is arranged around the bar code, the bar code is a tracing code, the hidden code is an anti-counterfeiting code matched with the bar code, and the hidden code and the content of the bar code are mutually verified.
2. The scanning device of claim 1, wherein: the first irradiation light source is a UV lamp, and the first camera is an ultraviolet camera so as to collect ultraviolet rays reflected by the invisible code;
the invisible code includes a pattern portion and a blank portion, one of which absorbs ultraviolet rays and the other of which reflects ultraviolet rays.
3. A control method for a scanning device, which is used for scanning a mixed code, wherein the scanning device comprises a first camera and a second camera which are oppositely arranged, a first illuminating light source which is relatively far away from the first camera and is close to the second camera, and a second illuminating light source which is relatively far away from the second camera and is close to the first camera, the mixed code comprises a hidden code and a bar code which is adjacent to the hidden code, the hidden code is irradiated by infrared rays or ultraviolet rays to generate a latent image, and the method comprises the following steps:
controlling the first irradiation light source to emit or stop emitting any one of infrared rays and ultraviolet rays; when the first irradiation light source emits infrared rays or ultraviolet rays, the first camera is controlled to collect the invisible codes;
when the first irradiation light source stops emitting infrared rays or ultraviolet rays, controlling a second irradiation light source to emit visible light, and controlling the second camera to read the bar code;
stopping the executing step when the decoding of the invisible codes and the bar codes is successful;
the first camera collects the multi-frame images of the invisible code within the single light-emitting time of the first illuminating light source, and controls the first illuminating light source to stop emitting light when one frame of image is successfully decoded or when none of the multi-frame images is successfully decoded, and the method also comprises the following steps: controlling the first camera to acquire the invisible code with a first depth of field, and controlling the second camera to acquire the bar code with a second depth of field, wherein the first depth of field and the second depth of field are approximately overlapped;
the invisible code comprises a plurality of coding units, each coding unit can be decoded by a main control chip to obtain the same content, the invisible code is arranged around the bar code, the bar code is a tracing code, the invisible code is an anti-counterfeiting code matched with the bar code, and the invisible code and the content of the bar code are mutually verified.
4. The method of claim 3, wherein: the first camera is an ultraviolet camera and is controlled to collect ultraviolet rays reflected by the invisible codes; wherein the content of the first and second substances,
the invisible code includes a pattern portion and a blank portion, one of which absorbs ultraviolet rays and the other of which reflects ultraviolet rays.
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| CN110502946A (en) * | 2019-08-19 | 2019-11-26 | 上海实万计算机技术有限公司 | A kind of hand-held mobile code reader of concealed code plain code |
| CN112183144A (en) * | 2020-09-07 | 2021-01-05 | 黑龙江大学 | Infrared spectrum identification reader and generation method |
| CN117541271B (en) * | 2024-01-09 | 2024-03-15 | 中企信诚(北京)防伪技术有限公司 | Invisible code-based product anti-counterfeiting traceability verification method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9729834B2 (en) * | 2009-03-19 | 2017-08-08 | International Business Machines Corporation | Identifying spatial locations of events within video image data |
| CN107704792A (en) * | 2017-08-30 | 2018-02-16 | 合肥新文远信息技术有限公司 | A kind of anti-fake two-dimension code reader |
| CN107918748A (en) * | 2017-10-27 | 2018-04-17 | 南京理工大学 | A kind of multispectral two-dimension code recognition device and method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9729834B2 (en) * | 2009-03-19 | 2017-08-08 | International Business Machines Corporation | Identifying spatial locations of events within video image data |
| CN107704792A (en) * | 2017-08-30 | 2018-02-16 | 合肥新文远信息技术有限公司 | A kind of anti-fake two-dimension code reader |
| CN107918748A (en) * | 2017-10-27 | 2018-04-17 | 南京理工大学 | A kind of multispectral two-dimension code recognition device and method |
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