CN107832755A - The image collecting device and its application method of dot pattern are formed for swirling eddy - Google Patents
The image collecting device and its application method of dot pattern are formed for swirling eddy Download PDFInfo
- Publication number
- CN107832755A CN107832755A CN201710952499.XA CN201710952499A CN107832755A CN 107832755 A CN107832755 A CN 107832755A CN 201710952499 A CN201710952499 A CN 201710952499A CN 107832755 A CN107832755 A CN 107832755A
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- China
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- paper
- image
- dot pattern
- swirling eddy
- collecting device
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
- G07D7/2008—Testing patterns thereon using pre-processing, e.g. de-blurring, averaging, normalisation or rotation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
-
- 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
- G06V30/40—Document-oriented image-based pattern recognition
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Artificial Intelligence (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Microscoopes, Condenser (AREA)
- Image Input (AREA)
Abstract
The image collecting device and its application method of dot pattern are formed for swirling eddy, including, light microscope：For encryption paper to be fixed, amplifies and by clearly fibre image in moving stage complete observation paper；Light supply apparatus：The process for encrypting paper to observation by bar-shaped LED irradiation carries out light filling；Encrypt paper：Based on the encryption paper that swirling eddy is formed due at its dot matrix fiber it is more intensive and it is internal interweave in regular, the rule Cryptographic different compared with the mixed and disorderly fiber of surrounding is shown after amplifying by light microscope；CCD camera：For the encryption paper image after acquisition process；Image pick-up card：For receiving the view data of CCD camera transmission；Main control computer：For sending instruction control micro-step motor, the data of storage image capture card and follow-up identifying processing to slave computer by host computer interface, the present invention, which has, to be ensured to distinguish accuracy rate, paper is identified more intelligentized feature.
Description
Technical field
The present invention relates to acquisition technology field, the more particularly to IMAQ for swirling eddy formation dot pattern
Device and its application method form the image collecting device of dot pattern for swirling eddy.
Background technology
In recent years, while bill operation develops rapidly, the gimmick system such as some criminals are by cloning, adulterium bill
Counterfeit bill is made, this not only causes heavy economic losses to country, and have impact on the stabilization of financial order.Therefore, based on rotation
The encryption paper for turning air-flow formation dot pattern produces therewith, and anti-counterfeiting performance is stronger.But because encryption information is embedded in paper fibre
In dimension, so being distinguished it is difficult to encrypt paper to this kind by outward appearance and other characteristics.
The content of the invention
In order to solve the above problems, the invention provides and for swirling eddy formed dot pattern image collecting device
And its application method forms the image collecting device of dot pattern for swirling eddy, to solve how to distinguish that this kind encrypts paper
The problem of, recognition efficiency is improved by the paper image after the advance acquisition process of the device, ensures to distinguish accuracy rate, knows paper
Not it is more intelligent.
To achieve the above object, the technical solution adopted by the present invention is：
The image collecting device of dot pattern is formed for swirling eddy, including,
Light supply apparatus：For providing light filling to encryption paper gatherer process；
CCD camera 2：For the encryption paper image after acquisition process；
Light microscope 3：For amplifying and gathering the fibre image of complete display in paper.
Image pick-up card 4：For receiving the view data of the transmission of CCD camera 2；
Main control computer 5：For sending instruction control micro-step motor, storage figure to slave computer by host computer interface
Data and follow-up identifying processing as capture card 4.
In the encryption paper, because fiber is more intensive and internal in regular intertexture at its dot matrix, pass through light source
The Cryptographic different compared with the mixed and disorderly fiber of surrounding is shown after irradiation.
The dot matrix of the described encryption paper based on swirling eddy dot pattern is encoded to word or seal, its paper color
For light color.
Described light supply apparatus uses the light source of bar-shaped LED 1, is fixedly mounted on the top of light microscope 3, passes through bar shaped
LED 1 provides the illumination of some strength so that the effect for gathering image is more preferable.
Described CCD camera 2 focuses CCD camera lenses using the auto iris of 600 lines, and being fixedly mounted on optics by support shows
The top of the eyepiece of micro mirror 3, IMAQ is carried out to the encryption paper after enhanced processing.
Described light microscope 3 is monocular microscope, and eyepiece multiplication factor is 10x/20, object lens magnification 4x,
10x, 40x, the visual field size of four times of mirrors is 5mm, and the visual field size of ten times of mirrors is 2mm, and the visual field size of 40 times of mirrors is
0.5mm, microscopical maximum amplification are 400 times.Two four phase micro-step motors are housed on objective table, essence can be carried out
True transverse shifting is with vertically moving, for gathering complete encryption paper image.
There is described main control computer 5 PC control interface to be easy to human-machine operation, by serial communication modular to making
Instruction is sent for the LPC2103 of slave computer, driving micro-step motor carries out objective table movement.
Described image pick-up card 4 uses analog acquisition card PCI1394, by analog video source CCD camera 2 with being equipped with figure
As the main control computer 5 of capture card 4 is connected, the hardware environment of IMAQ is formed.
The application method of the image collecting device of dot pattern is formed for swirling eddy, is first opened system switching logical
Electricity, by the objective table under paper samples microscope, and the paper upper left corner is fixed with the slide geometrical clamp on table top.Bar-shaped LED
1 provide some strength light filling illumination, from the eyepiece of light microscope 3 from, rotate coarse adjustment wheel be until seeing fiber
Only, rotate thin tuning wheel correctly to be focused on, produce clearly image.If light is too strong or too weak, can adjust on optical collector
Aperture to suitable luminosity.
Then order is sent by the PC control interface of main control computer so that the CCD on device eyepiece
Camera 2 is started working, while slave computer driving horizontal stepper motor, objective table move from left to right, and gathering out width is
5mm, length is the encrypted image of yardage, and after then longitudinal stepper motor moves 5mm downwards, horizontal stepper motor drives
Objective table from right to left, starts second of transversal scanning, until paper samples image all complete by collection.
Collect view data can be sent to via image pick-up card 4 main control computer 5 carry out image co-registration after, meeting
It was observed that fiber is more intensive and internal in the regular Cryptographic to interweave, it is easy to storage and follow-up identifying processing.
Beneficial effects of the present invention：
The present invention is directed to the encryption paper that dot pattern is formed based on swirling eddy, because its human eye is difficult to distinguish from the appearance
Characteristic that is other and can not scanning, devises the image collecting device.Paper fibre can be amplified by light microscope
Afterwards, the encryption information different compared with the mixed and disorderly fiber of surrounding can be shown.Then main control computer control objective table moves, and images
Head carries out complete image collection, facilitates subsequent treatment and identification.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is the schematic device of the present invention.
Fig. 3 is the encryption schematic diagram of the present invention.
Fig. 4 is the slave computer power supply module circuit diagram of the present invention.
Fig. 5 is the slave computer communication module circuitry figure of the present invention.
Fig. 6 is the stepper motor driving circuit figure of the present invention.
Embodiment
The present invention is elaborated below in conjunction with the accompanying drawings.
As shown in figure 1, the master operation of device has three, it is divided into feeding, amplification, collection.
As shown in Fig. 1 Fig. 2：System switching is opened first and is powered, by the objective table under paper samples microscope, is used in combination
Slide geometrical clamp on table top fixes the paper upper left corner.Bar-shaped LED 1 provides the light filling illumination of some strength, from light microscope
Observed in 3 eyepiece, rotate coarse adjustment wheel untill seeing fiber, rotated thin tuning wheel and correctly focused on, produced clear
Clear image.If light is too strong or too weak, the aperture on optical collector is can adjust to suitable luminosity.
Then order is sent by the PC control interface of main control computer so that the CCD on device eyepiece
Camera 2 is started working, while slave computer driving horizontal stepper motor, objective table move from left to right, and gathering out width is
5mm, length is the encrypted image of yardage, and after then longitudinal stepper motor moves 5mm downwards, horizontal stepper motor drives
Objective table from right to left, starts second of transversal scanning, until paper samples image all complete by collection.
Collect view data can be sent to via image pick-up card 44 main control computer 5 carry out image co-registration after,
It can observe that fiber is more intensive and internal in the regular Cryptographic to interweave, be easy to storage and follow-up identifying processing.
As shown in figure 3, the spiral air flow for forming encryption information forms a kind of fiber grain of rotation on paper, it is all
Lines center forms dot matrix, forms word or encrypted image.
As shown in Figure 4：Slave computer LPC2103 passes through dual power supply, i.e. 1.8V core voltages and 3.3V functions peripheral hardware electricity
Pressure.5V power supplys are inputted by transformer or USB power source line, circuit using SPX1117 series LDO chips SPX117M-3.3 and
For SPX1117M-1.8 by voltage stabilization to 3.3V and 1.8V, 0 Ω resistance is used for isolating digital power and analog power, digitally
With simulation ground.
As shown in Figure 5：LPC2103 includes two asynchronous serial ports：UART0 and UART1.Because PC serial ports is RS-232 electricity
Flat, the high level of standard is negative logic, and low level is positive logic, and UART needs SP-232 converters with PC communication modes,
Convert a signal into RS-232 level.PC ends are connected using DB9 connectors.
As shown in Figure 6：Because stepper motor can not be directly connected to work on industrial frequency AC or dc source, and it is therefore direct
Using LPC2103, often pin electric current is inadequate, you must use special stepper motor driver chip ULN2003 amplification electric currents
Carry out Driving Stepping Motor.
Claims (8)
1. the image collecting device of dot pattern is formed for swirling eddy, it is characterised in that including,
Light microscope (3)：Fixed-encryption paper on its objective table；
Light supply apparatus：It is arranged above light microscope (3) fixed station, for carrying out light filling to fixed encryption paper；
CCD camera (2)：Act on the light microscope (3), the encryption paper figure after collection light microscope (3) amplification
Picture；
Image pick-up card (4)：Connect the view data that the CCD camera (2) receives its transmission；
Main control computer (5)：Connection described image capture card (4) receives the view data of its collection, is stored, for follow-up
Identifying processing.
2. the image collecting device according to claim 1 that dot pattern is formed for swirling eddy, it is characterised in that institute
The dot matrix for the encryption paper based on swirling eddy dot pattern stated is encoded to word or seal, and its paper color is light color.
3. the image collecting device according to claim 1 that dot pattern is formed for swirling eddy, it is characterised in that institute
The light supply apparatus stated uses bar-shaped LED (1), is fixedly mounted on the top of light microscope (3), and one is provided by bar-shaped LED (1)
Determine the illumination of intensity so that the effect for gathering image is more preferable.
4. the image collecting device according to claim 1 that dot pattern is formed for swirling eddy, it is characterised in that institute
The CCD camera (2) stated focuses CCD camera lenses using the auto iris of 600 lines, is fixedly mounted on the eyepiece of light microscope (3)
On, IMAQ is carried out to the encryption paper after light filling enhanced processing.
5. the image collecting device according to claim 1 that dot pattern is formed for swirling eddy, it is characterised in that institute
The light microscope (3) stated is monocular microscope, and eyepiece multiplication factor is 10x/20, object lens magnification 4x, 10x, 40x,
The visual field size of four times of mirrors is 5mm, and the visual field sizes of ten times of mirrors is 2mm, and the visual field sizes of 40 times of mirrors is 0.5mm, microscope
Maximum amplification be 400 times, two four phase micro-step motors be housed on objective table, with carry out accurate transverse shifting and
Vertically move, realize complete encryption paper image collection.
6. according to the image collecting device that dot pattern is formed for swirling eddy described in claim 5, it is characterised in that described
Main control computer (5) there is PC control interface, in order to human-machine operation, by serial communication modular to being used as slave computer
LPC2103 send instruction, drive the micro-step motor moving stage, realize to encrypt paper movement.
7. the image collecting device according to claim 1 that dot pattern is formed for swirling eddy, it is characterised in that institute
The image pick-up card (4) stated uses analog acquisition card, by analog video source CCD camera (2) with being equipped with image pick-up card (4)
Main control computer (5) is connected.
8. the application method of the image collecting device of dot pattern is formed for swirling eddy, it is characterised in that first by system
Switch, which is opened, to be powered, and by the objective table under paper samples microscope, and fixes paper upper left with the slide geometrical clamp on table top
Angle, bar-shaped LED (1) provide some strength light filling illumination, from the eyepiece of light microscope (3) from, rotate coarse adjustment wheel
Untill seeing fiber, rotate thin tuning wheel and correctly focused on, produce clearly image.If light is too strong or too weak,
Aperture on adjustable optical collector is to suitable luminosity；
Then order is sent by the PC control interface of main control computer so that the CCD shootings on device eyepiece
Head (2) is started working, while slave computer driving horizontal stepper motor, objective table move from left to right, and it is 5mm to gather out width,
Length is the encrypted image of yardage, and after then longitudinal stepper motor moves 5mm downwards, horizontal stepper motor drives loading
Platform from right to left, starts second of transversal scanning, until paper samples image all complete by collection；
Collect view data can be sent to via image pick-up card (4) main control computer (5) carry out image co-registration after, meeting
It was observed that fiber is more intensive and internal in the regular Cryptographic to interweave, it is easy to storage and follow-up identifying processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952499.XA CN107832755A (en) | 2017-10-13 | 2017-10-13 | The image collecting device and its application method of dot pattern are formed for swirling eddy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952499.XA CN107832755A (en) | 2017-10-13 | 2017-10-13 | The image collecting device and its application method of dot pattern are formed for swirling eddy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107832755A true CN107832755A (en) | 2018-03-23 |
Family
ID=61648075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710952499.XA Pending CN107832755A (en) | 2017-10-13 | 2017-10-13 | The image collecting device and its application method of dot pattern are formed for swirling eddy |
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|---|---|
| CN (1) | CN107832755A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945125A (en) * | 2014-04-14 | 2014-07-23 | 立德高科(北京)数码科技有限责任公司 | Photographic device capable of analyzing dot-matrix graphic images and method of photographic device |
| CN104376354A (en) * | 2014-11-14 | 2015-02-25 | 深圳三元色数码科技有限公司 | Dot-matrix graphic, constructing method for dot-matrix graphic and method for identifying true dot-matrix graphic |
| CN205665459U (en) * | 2016-05-24 | 2016-10-26 | 赤峰学院 | Microscopical image acquisition system |
-
2017
- 2017-10-13 CN CN201710952499.XA patent/CN107832755A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945125A (en) * | 2014-04-14 | 2014-07-23 | 立德高科(北京)数码科技有限责任公司 | Photographic device capable of analyzing dot-matrix graphic images and method of photographic device |
| CN104376354A (en) * | 2014-11-14 | 2015-02-25 | 深圳三元色数码科技有限公司 | Dot-matrix graphic, constructing method for dot-matrix graphic and method for identifying true dot-matrix graphic |
| CN205665459U (en) * | 2016-05-24 | 2016-10-26 | 赤峰学院 | Microscopical image acquisition system |
Non-Patent Citations (2)
| Title |
|---|
| 倪欢等: "新型维氏显微硬度测量系统设计", 《电子测量技术》 * |
| 张开生等: "纤维成纸过程中数字化加密方法探讨", 《中国造纸学报》 * |
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Application publication date: 20180323 |