Manufacturing of a security document

Patent metadata

Field	Value
Publication number	US-10471759-B2
Application number	US-201715590163-A
Country	US
Kind code	B2
Filing date	May 9, 2017
Priority date	May 10, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A method for manufacturing a security document including a security pattern generation method includes the steps of selecting a bounding region, an image object, and a raster image or a function; cutting the image object into image object partitions; and repeating the image object as a pattern, preferably a lattice pattern, in the bounding region wherein each of the image object partitions of an image object is transformed depending on the position area of the image object in the lattice pattern and the rank of the image object partition.

First claim

What is claimed is:

1. A method for manufacturing a security document including a pattern, the method comprising the steps of:
selecting a bounding region in a document, an image object, and a raster image;
cutting the image object into image object partitions;
selecting a task including a sequence of image transformations, a minimum one of the image transformations depending on input parameters of the task;
duplicating the image object as the pattern in the bounding region; and
determining for each of the image objects in the pattern:
a position area in the bounding region; and
a set of values from pixels in the raster image within the position area relative to the raster image, and transforming each of the image object partitions by the task with the set of values as an input value of the task; wherein

an image transformation from the sequence of image transformations includes a translation.

2. The method for manufacturing a security document according to claim 1 , wherein each of the image transformations from the sequence of image transformations is selected from the group consisting of a geometric transformation, a color transformation, a line thickness transformation, and a dashed line transformation.

3. The method for manufacturing a security document according to claim 2 , wherein the step of cutting the image object into the image object partitions includes cutting through one or more axes of symmetry of the image object.

4. The method for manufacturing a security document according to claim 3 , further comprising the step of:
adding a contour line around each of the image object partitions.

5. The method for manufacturing a security document according to claim 1 , wherein the pattern is a lattice pattern selected from the group consisting of a rectangular lattice, a parallelogrammic lattice, an equilateral triangular lattice, a rhombic lattice, a square lattice, and a hexagonal lattice.

6. The method for manufacturing a security document according to claim 1 , wherein the security document is a passport, an identity card, a postage stamp, a product authentication, a driving license, a banknote, or a stock certificate.

7. A method for manufacturing a security document including a pattern, the method comprising the steps of:
selecting a bounding region in a document, an image object, and a function;
cutting the image object into image object partitions;
selecting a task including a sequence of image transformations, a minimum one of the image transformations depending on input parameters of the task;
duplicating the image object as the pattern in the bounding region; and
determining for each of the image objects of the pattern a position in the bounding region, returning a set of values from the function with the position as an input value for the function, and transforming each of the image object partitions by the task with the set of values as the input value of the task; wherein
an image transformation from the sequence of image transformations includes a translation.

8. The method for manufacturing a security document according to claim 7 , wherein each of the image transformations from the sequence of image transformations is selected from the group consisting of a geometric transformation, a color transformation, a line thickness transformation, and a dashed line transformation.

9. The method for manufacturing a security document according to claim 8 , further comprising the step of:
determining an identifier; wherein
the returned set of values is calculated from the function in which the identifier is an additional input value for the function or an additional input parameter of the task.

10. The method for manufacturing a security document according to claim 9 , wherein the step of cutting the image object into image object partitions includes cutting through one or more axes of symmetry of the image object.

11. The method for manufacturing a security document according to claim 10 , further comprising the step of:
adding a contour line around the image object partitions.

12. The method for manufacturing a security document according to claim 8 , wherein the geometric transformation is selected from the group consisting of a translation, a rotation, a reflection, a transflection, scaling, and shear mapping.

13. The method for manufacturing a security document according to claim 12 , wherein the pattern is a lattice pattern selected from the group consisting of a rectangular lattice, a parallelogrammic lattice, an equilateral triangular lattice, a rhombic lattice, a square lattice, and a hexagonal lattice.

14. The method for manufacturing a security document according to claim 13 , wherein the image object includes a vector graphic that is triangular, quadratic, rectangular, heptagonal, pentagonal, oval, rhombus, octagonal, circular, oval, regular polygonal, or elliptical shaped.

15. The method for manufacturing a security document according to claim 7 , wherein the security document is a passport, an identity card, a postage stamp, a product authentication, a driving license, a banknote, or a stock certificate.

Assignees

• Agfa Graphics Nv
• Agfa Nv

Inventors

• Bartels Rudolf

Classifications

• B42D25/435

  using electromagnetic radiation, e.g. laser · CPC title

• B42D25/324

  Reliefs · CPC title

• H04N1/444

  to a particular document or image or part thereof · CPC title

• B41M3/14

  Security printing {(securities B42D25/29)} · CPC title

• B42D25/337 Primary

  Guilloche patterns · CPC title