CN107784729A - A kind of paper money discrimination method based on honorable optically variable anti-counterfeiting feature - Google Patents
A kind of paper money discrimination method based on honorable optically variable anti-counterfeiting feature Download PDFInfo
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- CN107784729A CN107784729A CN201610716031.6A CN201610716031A CN107784729A CN 107784729 A CN107784729 A CN 107784729A CN 201610716031 A CN201610716031 A CN 201610716031A CN 107784729 A CN107784729 A CN 107784729A
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- 238000012850 discrimination method Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 13
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- 241001025261 Neoraja caerulea Species 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
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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
- G07D7/06—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 using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/128—Viewing devices
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- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
The invention discloses a kind of paper money discrimination method based on honorable optically variable anti-counterfeiting feature, including：When detecting that bank note enters horizontally arranged inlet slot of paper note, trigger the white light source being arranged above money transmitting channel and light, irradiate the bank note to be detected, to be arranged at the first image that the color sensor directly over money transmitting channel gathers the bank note to be detected；The cam mechanism that triggering is arranged at below money transmitting channel is rotated, and when up causing tilt of paper money to be detected to convex portion, the second image of the bank note to be detected is gathered with the color sensor；The honorable light compared in described first image and second image becomes characteristic area, judges whether that there is honorable light to become characteristic.This method is easily achieved, and cost of implementation is relatively low, and detection is quick and accurate, and so as to detect counterfeit money exactly, particularly with the false distinguishing of adulterium currency, effect becomes apparent.Become feature for honorable light, the present invention can be detected accurately.
Description
Technical field
The present invention relates to image procossing and identification technology field, and in particular to paper currency detecting method.
Background technology
Financial order and interests of the general public are safeguarded, prevent that counterfeit money comes into the market, are that Financial Management mechanism is particularly paid close attention to
The problem of, the key problem in financial machine and tool field is exactly the false distinguishing of bank note.In the paper currency detection equipment such as traditional paper money counter, cleaning-sorting machine
In the catoptric imaging mode based on CMOS/CIS and other image capture devices largely used.As counterfeit money manufacturing technology is more next
It is higher, must propose more efficiently and effectively means come solve to run into reality it is various counterfeit currency, adulterium currency false distinguishing
Problem.
Existing paper money discrimination system mainly utilizes CMOS or contact-type image sensor CIS catoptric imagings, obtains anti-
Handled after pseudo- identification image, and be identified according to the anti-counterfeiting mark image after processing, to judge to be detected the true of bank note
It is pseudo-.
In addition, recognize through retrieval, the currency false distinguishing that Japan, some national those skilled in the art in Europe propose it is various
It is largely the image-forming mechanism based on reflective single wavelength light in solution, multi-wavelength's light is used in same equipment
The technical scheme of irradiation collection banknote image, some manufacturers are being studied, but still immature, are also introduced into actual answer at present
With.
Imaging considers that the visual effect of main emulation human eye is simulated in traditional system, thus it is substantial amounts of it is reflective into
Such as CMOS, or the catoptric imaging of line array CCD or other image capture devices be present and identify in camera system.Reflective imaging limitation exists
Complicated in recognizer, hardware configuration is complicated, because being sent into currency examination equipment has the direction of positive and negative and bank note input, same to a piece of paper
Coin is sent into currency examination equipment and 4 kinds of situations be present, that is, obtains one of 4 kinds of possible images, to carry out any direction identification, then at least needs
Two sets of imaging devices and light source are wanted, causes hardware cost to increase, complicated in mechanical structure, product cost is high and to be difficult to commercialization etc. all
More problems.
Whether existing paper money discrimination system, its performance directly depend on light source radiation response, and need repeatedly to shoot
The features such as (such as mixed point reflection formula Number Reorganization, at least need two CMOS, line array CCD or CIS).Therefore in the selection of light source
With single and inflexible defect, and hardware device cost is high.For example, if desired detect infrared signature, based on CMOS or
Then light source must be fixed into infrared light supply for line array CCD or CIS or other image capture devices reflection identification and it is necessary at least
It is that two imaging devices just can guarantee that and photograph positive inverse video.Therefore for the currency of country variant, product must be according to feature
It is customized, causes product line species more, be not easy the problems such as commercialization.In the debugging of system hardware, due to hardware number
Amount is more, and the production debugging cycle is relatively long, and equipment wiring is complicated, and the commercialization cycle of product is also relatively long, and this is needing soon
Speed reply false making means are constantly updated for the counterfeit money of development, and the undoubtedly appearance of this kind of product can seriously lag behind the market demand.
And in this kind equipment based on reflective imaging, these problems can not avoid, in the premise that system false distinguishing principle does not change
Under, these intrinsic problems can not be fundamentally resolved.
The content of the invention
The present invention provides a kind of paper money discrimination method based on honorable optically variable anti-counterfeiting feature, can detect counterfeit money exactly,
Particularly with the false distinguishing of adulterium currency, effect becomes apparent.
Paper money discrimination method provided in an embodiment of the present invention based on honorable optically variable anti-counterfeiting feature includes：
When detecting that bank note enters horizontally arranged inlet slot of paper note, triggering is arranged at the white light light above money transmitting channel
Source point is bright, irradiates the bank note to be detected, and the paper to be detected is gathered to be arranged at the color sensor directly over money transmitting channel
First image of coin；
The cam mechanism that triggering is arranged at below money transmitting channel is rotated, and tilt of paper money to be detected is up caused to convex portion
When, with the second image of the color sensor collection bank note to be detected；
The honorable light compared in described first image and second image becomes characteristic area, judges whether there is honorable light
Become characteristic.
It is preferred that whether money transmitting channel is entered with infrared sensor sensing bank note.
It is preferred that the white light source is LED white lights.
Three wavelength white lights of fluorescent material, the colour cell of multi-chip type three are added to close it is preferred that the LED white lights are blue-ray LED
One of two kinds of white LED lamp.
It is preferred that triggering cam mechanism rotational angle is more than 60 ° of degree.
It is preferred that described first image and the second IMAQ be bank note to be detected full image；From full image
The middle honorable light of positioning becomes characteristic area, extracts the image in the region.
It is preferred that bank note to be detected is matched with a preset template, determine that honorable light becomes region in bank note to be detected；Directly
Gather honorable light and become region as the first image and the second image.
It is preferred that the color sensor uses contact-type image sensor CIS or CMOS or CCD.
In summary, paper currency detection technical scheme provided by the invention, the RMB of especially 2015 versions can be directed to
Honorable light become characteristic and carry out false distinguishing, the degree of accuracy is high.
Brief description of the drawings
Fig. 1 is paper currency detecting method flow chart provided by the invention；
Fig. 2 a form first state schematic diagram for a kind of note detection device provided by the invention；
Fig. 2 b form the second view for a kind of note detection device provided by the invention.
Embodiment
In view of the deficiencies in the prior art, the invention provides a kind of paper currency detecting method, as shown in figure 1, including
Step：
Step S101：Detect that bank note enters horizontally arranged inlet slot of paper note；
It can sense whether bank note enters money transmitting channel with an infrared sensor；
Step S102：Trigger the white light source being arranged above money transmitting channel to light, irradiate the bank note to be detected；
The white light source is LED white lights.
Three wavelength white lights of fluorescent material, the colour cell of multi-chip type three are added to close it is preferred that the LED white lights are blue-ray LED
One of two kinds of white LED lamp.
Step S103：To be arranged at the first figure that the color sensor directly over money transmitting channel gathers the bank note to be detected
Picture；
Step S104：The cam mechanism that triggering is arranged at below money transmitting channel rotates, and up causes to convex portion to be checked
Survey tilt of paper money；
Wherein, triggering cam mechanism rotational angle should be greater than 60 ° of degree.
Step S105：The second image of the bank note to be detected is gathered with color sensor；
Step S106：The honorable light compared in described first image and second image becomes characteristic area；
Step S107：According to comparison result, judge whether that there is honorable light to become characteristic, export false distinguishing result according to this.
In one embodiment, step S103 and step S105 is collection bank note to be detected when carrying out IMAQ
Full image.The color sensor uses contact-type image sensor CIS or CMOS or CCD.
Reference picture 2a, present invention also offers a kind of note detection device, including：
Inlet slot of paper note 201；
Cash dispensing port 202；
Money transmitting channel 203；
White light source 204 above money transmitting channel 203；
With the color sensor 205 of the position correspondence of white light source 204；
It is arranged at the cam mechanism 206 of the lower section of money transmitting channel 203；
Infrared sensor 207, it is arranged on money transmitting channel 203, when sensing bank note and entering money transmitting channel 203, triggering
The white light source 204 is lighted, and irradiates bank note to be detected, and triggering color sensor 205 gathers the first of the bank note to be detected
Image；Then trigger the cam mechanism 206 to rotate, when up causing tilt of paper money to be detected to convex portion, such as Fig. 2 b institutes
Show, trigger the second image that the color sensor 205 gathers the bank note to be detected.
Image processor 208, it is connected with the color sensor 205, compares described first image and second image
In honorable light become characteristic area, judge whether to have honorable light to become characteristic.
It is preferred that the white light source 204 is LED white lights.
Three wavelength white lights of fluorescent material, the colour cell of multi-chip type three are added to close it is preferred that the LED white lights are blue-ray LED
One of two kinds of white LED lamp.
It is preferred that triggering cam mechanism 206 rotational angle is more than 60 ° of degree.
It is preferred that the first image and the second image that the color sensor 205 gathers are the full width figures of bank note to be detected
Picture；Described image processor 208 is to position honorable light from full image to become characteristic area, extracts the image in the region.
It is preferred that the color sensor 205 matches bank note to be detected with a preset template, determine in bank note to be detected
Honorable light becomes region；Directly gather honorable light and become region as the first image and the second image.
It is preferred that the color sensor 205 uses contact-type image sensor CIS or CMOS or CCD.
Constantly update in bank note fraud means, change more and more frequently under situation, detection device will rapidly adapt to, in time
Renewal upgrading is to contain that counterfeit money circulates, and this causes financial institution and businessman has the initiative status.Device provided by the invention, not
Change in the case of being already present on market and the mechanically and electrically road of the equipment actually used, can upgrading products false distinguishing energy rapidly
Under the actual demand of power, to detection device only upgrading can need to easily be realized by serial ports or USB.
Because technical scheme provided by the invention is to carry out detection identification based on transmission plot, simulated different from traditional reflection
The flow of eye recognition, obtained image may be entirely different with image seen by person, same anti-counterfeiting characteristic and reflectogram
May be entirely different.Therefore on the premise of it cannot get transmission plot.Counterfeit currency manufacture group can not know false proof handling process
And algorithm is realized, is had natural system encryption function, is counterfeited currency and which characteristic point of the imitation do not known during fabrication, even if knowing
Road whole mechanical structure and crack whole hardware circuits and can not also learn false proof principle, the forgery substantially increased from root
The manufacture difficulty of currency.
The adulterium feature of adulterium currency is that position is not fixed, and adulterium feature is not fixed, and adulterium size is not fixed.Due to altering
The central characteristics of currency are that have a process for splicing, in reflection some splicing features and unobvious, and special under transmission case
Sign is then obvious.For splicing in careful adulterium currency, from surface, (reflective) sees to be difficult to find out abnormal place.But by
It is difficult that the material consistent with genuine note is found in material in counterfeiting currency, causes the stitching portion under transmission case to have obvious material
Qualitative change, although in reflective very hidden stitching portion, in transmission, splicing is still obvious.By contrasting the prominent of material
Become, adulterium currency can easily be identified using the technology of image procossing.Therefore the detection for adulterium currency is based on transmission
The detection of full width face has inherent advantage relative to the mode of reflective imaging.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore the guarantor of the present invention
Shield scope should be defined by the scope that the claims in the present invention are defined.
Claims (8)
- A kind of 1. paper money discrimination method based on honorable optically variable anti-counterfeiting feature, it is characterised in that including：When detecting that bank note enters horizontally arranged inlet slot of paper note, triggering is arranged at the white light source point above money transmitting channel It is bright, the bank note to be detected is irradiated, the bank note to be detected is gathered to be arranged at the color sensor directly over money transmitting channel First image；The cam mechanism that triggering is arranged at below money transmitting channel rotates, when up causing tilt of paper money to be detected to convex portion, The second image of the bank note to be detected is gathered with the color sensor；The honorable light compared in described first image and second image becomes characteristic area, judges whether that there is honorable light to become special Property.
- 2. the method as described in claim 1, it is characterised in that：Whether money transmitting channel is entered with infrared sensor sensing bank note.
- 3. the method as described in claim 1, it is characterised in that：The white light source is LED white lights.
- 4. method as claimed in claim 3, it is characterised in that：The LED white lights are the white LED lamp that blue-ray LED adds three wavelength white lights of fluorescent material, the colour cell of multi-chip type three to close One of two kinds.
- 5. the method as described in claim 1, it is characterised in that：Trigger cam mechanism rotational angle and be more than 60 ° of degree.
- 6. the method as described in claim 1, it is characterised in that：Described first image and the second IMAQ be bank note to be detected full image；Honorable light is positioned from full image and becomes characteristic area, extracts the image in the region.
- 7. the method as described in claim 1, it is characterised in that：Bank note to be detected is matched with a preset template, determines that honorable light becomes region in bank note to be detected；Directly gather honorable light and become region as the first image and the second image.
- 8. the method as described in claim 1, it is characterised in thatThe color sensor uses contact-type image sensor CIS or CMOS or CCD.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716031.6A CN107784729A (en) | 2016-08-24 | 2016-08-24 | A kind of paper money discrimination method based on honorable optically variable anti-counterfeiting feature |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610716031.6A CN107784729A (en) | 2016-08-24 | 2016-08-24 | A kind of paper money discrimination method based on honorable optically variable anti-counterfeiting feature |
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| CN107784729A true CN107784729A (en) | 2018-03-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031409A (en) * | 2019-03-15 | 2019-07-19 | 南京华科和鼎信息科技有限公司 | A kind of multispectral anti-counterfeiting characteristic checks equipment and the method for inspection |
| CN111627145A (en) * | 2020-05-19 | 2020-09-04 | 武汉卓目科技有限公司 | Method and device for identifying fine hollow image-text of image |
| CN112037415A (en) * | 2020-03-18 | 2020-12-04 | 秦佑胜 | Imaging characteristic analysis system applying block chain |
| CN115131909A (en) * | 2022-04-06 | 2022-09-30 | 温州市质量技术检测科学研究院 | RGB color recognition system and method for currency detection and anti-counterfeiting |
-
2016
- 2016-08-24 CN CN201610716031.6A patent/CN107784729A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031409A (en) * | 2019-03-15 | 2019-07-19 | 南京华科和鼎信息科技有限公司 | A kind of multispectral anti-counterfeiting characteristic checks equipment and the method for inspection |
| CN112037415A (en) * | 2020-03-18 | 2020-12-04 | 秦佑胜 | Imaging characteristic analysis system applying block chain |
| CN111627145A (en) * | 2020-05-19 | 2020-09-04 | 武汉卓目科技有限公司 | Method and device for identifying fine hollow image-text of image |
| CN115131909A (en) * | 2022-04-06 | 2022-09-30 | 温州市质量技术检测科学研究院 | RGB color recognition system and method for currency detection and anti-counterfeiting |
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Application publication date: 20180309 |
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