EP4169002A1 - Verfahren zur authentifizierung eines optisch variablen elements - Google Patents
Verfahren zur authentifizierung eines optisch variablen elementsInfo
- Publication number
- EP4169002A1 EP4169002A1 EP21731677.7A EP21731677A EP4169002A1 EP 4169002 A1 EP4169002 A1 EP 4169002A1 EP 21731677 A EP21731677 A EP 21731677A EP 4169002 A1 EP4169002 A1 EP 4169002A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control points
- candidate
- individual
- control
- optically variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012795 verification Methods 0.000 claims abstract description 105
- 230000003287 optical effect Effects 0.000 claims abstract description 28
- 238000013507 mapping Methods 0.000 claims description 23
- 230000000875 corresponding effect Effects 0.000 claims description 19
- 239000013598 vector Substances 0.000 claims description 16
- 230000002596 correlated effect Effects 0.000 claims description 15
- 230000007935 neutral effect Effects 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 230000003542 behavioural effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- 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
- G07D7/003—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 security elements
- G07D7/0032—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 security elements using holograms
-
- 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
- G07D7/003—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 security elements
-
- 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
-
- 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
- G07D7/2016—Testing patterns thereon using feature extraction, e.g. segmentation, edge detection or Hough-transformation
-
- 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
- G07D7/202—Testing patterns thereon using pattern matching
- G07D7/206—Matching template patterns
Definitions
- contravariant control points the pixels, or sets of adjacent pixels in pairs, whose changes in light intensity, possibly averaged, are negatively correlated on the map,
- the invention is applicable to any type of optically variable element, including different technologies and shapes, for example solid shapes or a set of points or areas scattered on a flat surface.
- a mapping is thus carried out of all the points of the source image, possibly sub-sampled, in order to be able to find the best points on which to carry out the checks.
- two control points are correlated if they generally exhibit the same variations in intensity regardless of the trajectory in the same portion.
- the intensities are averaged over the hemisphere portion.
- a step can be provided of averaging the intensity value of at least some of the sets of adjacent pixels in pairs.
- the verification path is imposed.
- the set of angular positions along this path is sent to the smartphone, preferably in the form of graphic instructions, in this case in the form of an arrow displayed on the screen thereof.
- a graphic function consisting in displaying on the screen of the smartphone a directional graphic index, in this case a set of at least one arrow, to indicate to the operator handling said smartphone in which (s) direction (s) of tilting the communicating object so that the angle values measured or determined by the communicating object reach the angle values received in the request.
- the verification server can then determine which is the reference path closest to the verification path in the corresponding acquisition space.
- the light intensity of the pixels corresponding to said control points is measured by the smartphone, regardless of the trajectory of the smartphone. We can then determine whether they are covariant, neutral or contravariant as a function of the evolution of the light intensity of the pixels of these control points, and compare whether these variations correspond to the variations of the control points of the set of reference images.
- Vectors of values of L for each of the control points are formalized using normalized correlation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Computer Security & Cryptography (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Collating Specific Patterns (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Image Analysis (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006419A FR3111726B1 (fr) | 2020-06-19 | 2020-06-19 | procédé d’authentification d’un élément optiquement variable. |
| PCT/EP2021/066187 WO2021255069A1 (fr) | 2020-06-19 | 2021-06-16 | Procédé d'authentification d'un élément optiquement variable. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4169002A1 true EP4169002A1 (de) | 2023-04-26 |
Family
ID=74045464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21731677.7A Pending EP4169002A1 (de) | 2020-06-19 | 2021-06-16 | Verfahren zur authentifizierung eines optisch variablen elements |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4169002A1 (de) |
| FR (1) | FR3111726B1 (de) |
| WO (1) | WO2021255069A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3137778A1 (fr) | 2022-07-08 | 2024-01-12 | Smart Packaging Solutions | Procédé de sécurisation d’un objet de valeur. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2863080B1 (fr) | 2003-11-27 | 2006-02-24 | Advestigo | Procede d'indexation et d'identification de documents multimedias |
| JP4834968B2 (ja) * | 2004-08-11 | 2011-12-14 | 富士ゼロックス株式会社 | 真偽判定システム、真偽判定装置及びプログラム |
| FR2973137B1 (fr) | 2011-03-25 | 2015-07-24 | Hologram Ind | Procede et systeme d'authentification d'un document securise |
| EP3055839B1 (de) * | 2013-10-11 | 2018-07-25 | Sicpa Holding SA | Tragbare vorrichtung und verfahren zur authentifizierung einer markierung |
| US9824268B2 (en) * | 2014-04-29 | 2017-11-21 | Ncr Corporation | Media item validation |
| FR3027703B1 (fr) | 2014-10-22 | 2017-12-08 | Hologram Ind | Procede de comparaison d’images numeriques |
-
2020
- 2020-06-19 FR FR2006419A patent/FR3111726B1/fr active Active
-
2021
- 2021-06-16 WO PCT/EP2021/066187 patent/WO2021255069A1/fr unknown
- 2021-06-16 EP EP21731677.7A patent/EP4169002A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021255069A1 (fr) | 2021-12-23 |
| FR3111726A1 (fr) | 2021-12-24 |
| FR3111726B1 (fr) | 2022-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20221104 |
|
| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |