CN101976477A - Multispectral multi-angle identification method and device for detecting optically variable ink and hologrphic image - Google Patents
Multispectral multi-angle identification method and device for detecting optically variable ink and hologrphic image Download PDFInfo
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- CN101976477A CN101976477A CN 201010520349 CN201010520349A CN101976477A CN 101976477 A CN101976477 A CN 101976477A CN 201010520349 CN201010520349 CN 201010520349 CN 201010520349 A CN201010520349 A CN 201010520349A CN 101976477 A CN101976477 A CN 101976477A
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Abstract
The invention relates to multispectral multi-angle identification method and device for detecting optically variable ink and a hologrphic image. The method comprises the following steps of: arranging a first light source and a second light source which are used for detecting the optically variable ink and the hologrphic image; irradiating the first light source and the second light source onto the surfaces of the detected optically variable ink and the hologrphic image from different incident angles; inducing and scanning the optical information of the first light source and the second light source through a CMOS (Complementary Metal-Oxide-Semiconductor) linear image sensor and converting the information into image information; transmitting the image information to an image processing unit; identifying the image information through a recognition algorithm and displaying or sending a recognition result to an actuating mechanism. The device comprises a bracket module, and the bracket module is internally provided with a transmission mechanism, an optically variable ink carrier channel, a detection infrared sensor, a contact type linear image sensor and a main control circuit.
Description
Technical field
The present invention relates to the detection technique of photochromatic printing ink hologram image, be meant that mainly a kind of multispectral multi-angle that is applied on the equipment of depositing and withdrawing automatically detects the false distinguishing method and the device of photochromatic printing ink and hologram image.
Background technology
Comprising that having of bank note, trade mark etc. used on the valency printed matter more and more as photochromatic printing ink, hologram etc. need use the high-end anti-counterfeiting characteristic of determining from multi-angle observation.This anti-counterfeiting characteristic of Artificial Cognition need be under white light be observed from different perspectives and is confirmed, machine recognition can adopt a plurality of video cameras photographic images or reach the mode of taking detected material from different perspectives by direct reflection and realize from different perspectives.For example in the patent No. is 200710166347.3 patent document, described and adopted video camera of a kind of employings, reached the effect of multi-angle scanning by direct reflection, thus the purpose that realization is carried out false distinguishing to photochromatic printing ink, hologram image.The light path design complexity of Shi Xianing like this, overall dimension is bigger, and the cost of video camera own is higher, if detect the photochromatic printing ink of bank note, just must enter just with the bank note front and can detect photochromatic printing ink.For example in the patent No. is 200620093035.5 patent document, described employing contact line image sensor CIS to bank note or bill scan, Information Monitoring, realize the authenticity of bank note or bill, but, can't effectively detect anti-counterfeiting characteristics such as photochromatic printing ink, hologram images because the CIS employing is the incident light source of single angle.For example in the patent No. is the patent document of 200410009847.X, describe the camera pickup light sensitive ink image from different perspectives that utilizes mobile phone, utilized the light of embedded in mobile phone to become identification module and handle, obtained the false distinguishing effect of photochromatic printing ink.This method needs people's intervention to realize photochromatic printing ink false distinguishing processing, is not the machine identification method on the complete meaning.
If can adopt a kind of small-sized line image sensor that can be luminous from different perspectives, realize that multi-angle detects the purpose of false proof point, and can scan simultaneously by tow sides, to reach purpose full-automatic, high speed detection.Realize this device, can obtain very big benefit, and can on the equipment of depositing and withdrawing automatically, obtain practical application widely from cost, complexity, automaticity.
Summary of the invention
The purpose of this invention is to provide false distinguishing method and device that a kind of multispectral multi-angle detects photochromatic printing ink and hologram image, adopt a kind of small-sized line image sensor that can be luminous from different perspectives, realize that multi-angle detects the purpose of false proof point, and can scan simultaneously by tow sides, in the little space of a qualification, when photochromatic printing ink and holographic image carrier at a high speed by the time, fully automatic high-speed scanning, the high precision Real time identification finished simultaneously anti-forgery feature point such as photochromatic printing ink on photochromatic printing ink and the holographic image carrier and hologram images detect.
Realize that method of the present invention is: comprise the following steps:
Be provided for detecting the 1st light source and the 2nd light source of photochromatic printing ink and hologram image;
The 1st light source is incided detected photochromatic printing ink and hologram image surface with the 2nd light source from different incident angles;
Scan the optical information of the 1st light source and the 2nd light source and convert image information to by CMOS line image sensor sensing;
Above-mentioned c image information is sent to graphics processing unit;
By recognizer image information is carried out false distinguishing identification, and recognition result shown or send to topworks.
This method also comprises:
Described the 1st light source and the 2nd light source comprise three kinds of spectrum of RGB.
The different incidence angles degree of described the 1st light source and the 2nd light source is respectively between the 45-85 degree and between the 5-40 degree.
Realize that device of the present invention is: comprise rack module, in rack module, be provided with gear train, photochromatic printing ink carrier passage, detect infrared sensor, contact line image sensor, governor circuit, wherein detect infrared sensor and contact line image sensor branch is located at photochromatic printing ink and holographic image carrier passage both sides, detect infrared sensor and also be connected with governor circuit, gear train drives photochromatic printing ink and holographic image carrier process photochromatic printing ink and holographic image carrier passage.
This device also comprises:
Described contact line image sensor comprises CMOS line image sensor, the 1st light source and the 2nd light source, the 1st light source incides detected light sensitive ink and hologram image surface from different incident angles respectively with the 2nd light source, by CMOS line image sensor sensing scanning light source information and convert image information to, this image information is sent to governor circuit by the communications cable.
Described detection infrared sensor is the triggering sensor that photochromatic printing ink and holographic image carrier enter, and begins medium is carried out image scanning (photochromatic printing ink and hologram image scan) by governor circuit notice contact line image sensor.
Described governor circuit is finished driving and the scan control to contact line image sensor, realize that an embedded system carries out software control to system, and call recognizer to medium towards, towards discerning, the location feature zone, photochromatic printing ink or the holographic detected characteristics of waiting for are carried out The matching analysis, the corresponding actions processing is carried out in recognition result demonstration or notice gear train.
Described the 1st light source and the 2nd light source comprise three kinds of spectrum of RGB.
The different incidence angles degree of described the 1st light source and the 2nd light source is respectively 45-85 degree and 5-40 degree.
The beneficial effect that the present invention has: adopt kind can be luminous from different perspectives small-sized line image sensor, realize that multi-angle detects the purpose of false proof point, and can scan simultaneously by tow sides, to reach purpose full-automatic, high speed detection.Realize this device, can obtain very big benefit, and can on the equipment of depositing and withdrawing automatically, obtain practical application widely from cost, complexity, automaticity.
Description of drawings
Fig. 1 is a device synoptic diagram of the present invention.
Fig. 2 is the contact line image sensor synoptic diagram of Fig. 1.
Fig. 3 is a workflow diagram of the present invention.
Fig. 4-Fig. 7 is 100 yuans of synoptic diagram of the present invention, and wherein: Fig. 4, Fig. 5 are positive towards figure; Fig. 6, Fig. 7 are that reverse side is towards figure; Fig. 4, Fig. 6 are for making progress towards figure; Fig. 5, Fig. 7 are for downwards towards figure.
Among the figure: 1 the 1st light source, 2 the 2nd light sources, 3 bank note, 4CMOS line image sensor, 5 rack modules, 6 gear trains, 7 banknote path, 8 governor circuits, 9 detect infrared sensor, 10 contact line image sensors.
Embodiment
The invention will be further described below in conjunction with drawings and Examples;
As shown in Figure 1, this device comprises: rack module 5, and gear train 6, bank note 3 passages 7, governor circuit 8 enters and detects infrared sensor 9, contact line image sensor 10; Respectively adorn a same contact line image sensor 10 in apparatus of the present invention up and down, the light source 1 that adds two different angles incidents in this contact line image sensor 10,2, simultaneously (for example: bank note 3) scan detection to the detected medium that passes through, (for example: only inverse video bank note 3) extract medium simultaneously, after being confirmed to be the detected medium image, to medium towards, towards discerning, determine towards image in find corresponding anti-forgery feature point, the unique point image is carried out Algorithm Analysis, whether the assigned address that obtains on the medium has photochromatic printing ink, whether anti-counterfeiting characteristics such as hologram image or the feature that is had meet predetermined threshold value, reach to carry out false distinguishing by medium purpose.
Embodiment (being used for the bank note false distinguishing):
Structure comprises: rack module 5, and gear train 6, banknote path 7, governor circuit 8 detects infrared sensor 9, contact line image sensor 10.Wherein, banknote path 7 is in the inside of rack module 5; Gear train 6 be contained in rack module 5 sides and on; Contact line image sensor 10 is contained in the rack module 5, is distributed in the both sides of banknote path 7, and symmetry is placed; Main control board 8 is contained in the inside of rack module 5, links to each other with contact line image sensor 10 by the communications cable.
Rack module 5 is mainly device and totally provides support, and can be independent agency, also can be placed in the device interior of depositing and withdrawing automatically, as its currency checking module;
Detect the triggering sensor that infrared sensor 9 enters for bank note 3, begin to carry out bank note 3 scannings by governor circuit 8 notice contact line image sensors 10;
Contact line image sensor 10 (Fig. 2) is a module, 2 light sources (comprising three kinds of spectrum of RGB)-light source 1 and light source 2 is equipped with in inside, incide bank note 3 surfaces respectively from different perspectives, can the bank note 3 that pass through at a high speed be scanned, by CMOS line image sensor 4 sensitive scanning information and convert image information to, this image information is sent to governor circuit 8 by the communications cable, and wherein the α angle is between the 45-85 degree, and the β angle is between the 5-40 degree;
1. contact line image sensor 10 is customized by imageing sensor manufacturer.
2. main control board 8 can be made up of selected on the market embedded system, and process chip is looked concrete system's operation and cost requirement, selects DSP, fpga chip, and storage and logical process chip also viewing system require and decide.
3. rack module, money transmitting channel, gear train etc. are current techique.
Principle of work:
1. the false-identifying device that multispectral multi-angle detects photochromatic printing ink, hologram image forms a mechanical system of can supporting dielectric passing through at a high speed by rack module, gear train, medium channel, and detect infrared sensor by entering, at a high speed contact line image sensor and governor circuit forms a high-velocity scanning and real-time identifying system.
2. 2 contact line image sensors with two angle scanning functions are set in the money transmitting channel both sides, reach the purpose of energy real time scan multi-angle dielectric image.
3. Gao Su multi-angle line image sensor, having can be from the light source of two different angles incidents.
4. false distinguishing recognition principle, by the positive and negative two sides of the medium image that scanning obtains, image is discerned, obtain that medium enters towards with towards (Fig. 4), and then have the zone to be checked of photochromatic printing ink or hologram image on definite medium, extract this area image and compare.Determine the true and false of its anti-counterfeiting characteristic according to photochromatic printing ink, the difference of hologram image between the scan image of different angles, different spectral illuminations.
5. medium: medium of the present invention is the carrier that is loaded with photochromatic printing ink and hologram image.
Claims (9)
1. a multispectral multi-angle detects the false distinguishing method of photochromatic printing ink and hologram image, it is characterized in that comprising the following steps:
A. be provided for detecting the 1st light source and the 2nd light source of photochromatic printing ink and hologram image;
B. the 1st light source is incided detected photochromatic printing ink and hologram image surface with the 2nd light source from different incident angles;
C. scan the optical information of the 1st light source and the 2nd light source and convert image information to by CMOS line image sensor sensing;
D. above-mentioned c image information is sent to graphics processing unit;
E. by recognizer image information is carried out false distinguishing identification, and recognition result shown or send to topworks.
2. multispectral multi-angle as claimed in claim 1 detects the false distinguishing method of photochromatic printing ink and hologram image, it is characterized in that described the 1st light source and the 2nd light source comprise three kinds of spectrum of RGB.
3. multispectral multi-angle as claimed in claim 1 detects the false distinguishing method of photochromatic printing ink and hologram image, and the different incidence angles degree that it is characterized in that described the 1st light source and the 2nd light source is respectively between the 45-85 degree and between the 5-40 degree.
4. realize that the multispectral multi-angle of claim 1 detects the false-identifying device of photochromatic printing ink and hologram image, it is characterized in that comprising rack module, in rack module, be provided with gear train, photochromatic printing ink and holographic image carrier passage, detect infrared sensor, contact line image sensor, governor circuit, wherein detect infrared sensor and contact line image sensor branch is located at photochromatic printing ink and holographic image carrier passage both sides, detect infrared sensor and also be connected with governor circuit, gear train drives photochromatic printing ink and holographic image carrier process photochromatic printing ink and holographic image carrier passage.
5. multispectral multi-angle as claimed in claim 4 detects the false-identifying device of photochromatic printing ink and hologram image, it is characterized in that described contact line image sensor comprises CMOS line image sensor, the 1st light source and the 2nd light source, the 1st light source incides detected light sensitive ink and hologram image surface from different incident angles respectively with the 2nd light source, by CMOS line image sensor sensing scan light information and convert image information to, this image information is sent to governor circuit by the communications cable.
6. multispectral multi-angle as claimed in claim 4 detects the false-identifying device of photochromatic printing ink and hologram image, it is characterized in that described detection infrared sensor is the triggering sensor that photochromatic printing ink and holographic image carrier enter, begin medium is carried out image scanning by governor circuit notice contact line image sensor.
7. multispectral multi-angle as claimed in claim 4 detects the false-identifying device of photochromatic printing ink and hologram image, it is characterized in that described governor circuit finishes driving and the scan control to contact line image sensor, realize that an embedded system carries out software control to system, and call recognizer to medium towards, towards discerning, the location feature zone, photochromatic printing ink or the holographic detected characteristics of waiting for are carried out The matching analysis, the corresponding actions processing is carried out in recognition result demonstration or notice gear train.
8. multispectral multi-angle as claimed in claim 5 detects the false-identifying device of photochromatic printing ink and hologram image, it is characterized in that described the 1st light source and the 2nd light source comprise three kinds of spectrum of RGB.
9. multispectral multi-angle as claimed in claim 5 detects the false-identifying device of photochromatic printing ink and hologram image, it is characterized in that the different incidence angles degree of described the 1st light source and the 2nd light source is respectively 45-85 degree and 5-40 degree.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280016A (en) * | 2013-06-09 | 2013-09-04 | 北京印钞有限公司 | Detecting method of OVMI color ink, pearly-luster ink and holographic film on small-piece counting and sorting machine |
| WO2013135028A1 (en) * | 2012-03-14 | 2013-09-19 | 深圳市银之杰科技股份有限公司 | Image acquisition and verification platform |
| CN103568550A (en) * | 2012-07-20 | 2014-02-12 | 小森公司 | Inspection apparatus for sheet |
| CN103632433A (en) * | 2013-12-23 | 2014-03-12 | 尤新革 | Multispectral image acquisition and processing method for contact image sensor |
| CN104361679A (en) * | 2014-10-30 | 2015-02-18 | 上海层峰金融设备有限公司 | Detection passage applied to counting and sorting machine |
| WO2015192560A1 (en) * | 2014-06-19 | 2015-12-23 | 广州广电运通信息科技有限公司 | Method and system for identifying authenticity of optically-variable ink area of valuable document |
| CN106056752A (en) * | 2016-05-25 | 2016-10-26 | 武汉大学 | Banknote authentication method based on random forest |
| CN106296971A (en) * | 2016-08-31 | 2017-01-04 | 东方通信股份有限公司 | A kind of note surface paste high precision test identification system and method |
| CN107093258A (en) * | 2017-04-27 | 2017-08-25 | 深圳怡化电脑股份有限公司 | Module for recognizing paper money and automatic depositing-withdrawing equipment |
| CN109100337A (en) * | 2018-07-05 | 2018-12-28 | 中国科学院上海光学精密机械研究所 | Multiband multi-orientation detection device and detection method |
| CN114354514A (en) * | 2021-12-24 | 2022-04-15 | 南昌大学 | Non-contact multi-modal material perception and recognition device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013135028A1 (en) * | 2012-03-14 | 2013-09-19 | 深圳市银之杰科技股份有限公司 | Image acquisition and verification platform |
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| CN106056752A (en) * | 2016-05-25 | 2016-10-26 | 武汉大学 | Banknote authentication method based on random forest |
| CN106056752B (en) * | 2016-05-25 | 2018-08-21 | 武汉大学 | A kind of banknote false distinguishing method based on random forest |
| CN106296971A (en) * | 2016-08-31 | 2017-01-04 | 东方通信股份有限公司 | A kind of note surface paste high precision test identification system and method |
| CN107093258A (en) * | 2017-04-27 | 2017-08-25 | 深圳怡化电脑股份有限公司 | Module for recognizing paper money and automatic depositing-withdrawing equipment |
| CN109100337A (en) * | 2018-07-05 | 2018-12-28 | 中国科学院上海光学精密机械研究所 | Multiband multi-orientation detection device and detection method |
| CN114354514A (en) * | 2021-12-24 | 2022-04-15 | 南昌大学 | Non-contact multi-modal material perception and recognition device |
| CN114354514B (en) * | 2021-12-24 | 2024-02-09 | 南昌大学 | Non-contact multi-mode material sensing and identifying device |
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Application publication date: 20110216 |