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)
• Computer Vision & Pattern Recognition (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Computer Security & Cryptography (AREA)
• Collating Specific Patterns (AREA)
• Image Analysis (AREA)
• Inspection Of Paper Currency And Valuable Securities (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=74045464

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (6)

• 2020
  • 2020-06-19 FR FR2006419A patent/FR3111726B1/fr active Active
• 2021
  • 2021-06-16 EP EP21731677.7A patent/EP4169002A1/de active Pending
  • 2021-06-16 WO PCT/EP2021/066187 patent/WO2021255069A1/fr not_active Ceased

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