EP 3286740 A1 20180228 - METHOD FOR IDENTIFYING A SECURITY PATTERN USING AN ARTIFICIAL 3D RECONSTRUCTION
Title (en)
METHOD FOR IDENTIFYING A SECURITY PATTERN USING AN ARTIFICIAL 3D RECONSTRUCTION
Title (de)
VERFAHREN ZUR IDENTIFIKATION EINES SICHERHEITSMUSTERS ÜBER EINE ARTIFIZIELLE 3-D-REKONSTRUKTION
Title (fr)
PROCÉDÉ D'IDENTIFICATION D'UN MOTIF DE SÉCURITÉ PAR RECONSTRUCTION 3D ARTIFICIELLE
Publication
Application
Priority
- DE 102015106081 A 20150421
- EP 2016058872 W 20160421
Abstract (en)
[origin: WO2016170041A1] The invention relates to a method for identifying a security pattern by converting two-dimensional (2D) images or a real existing 3D model into an artificial three-dimensional (3D) reconstruction using an analysis of the surface structures, color information (color and/or color intensity), and depth information of the detected security pattern. The method is characterized by the following steps: - generating a height model by determining the surface normals per pixel for the three coordinate axes (x, y, z) from the detected 2D images or the 3D model, - analyzing the pixel intensity of the detected 2D images or the 3D model on the basis of the shadow and the reflection behavior, and - generating the artificial 3D reconstruction from the pixel intensity, wherein a non-reproducible artificial 3D surface is generated according to the pixel intensity or the brightness level. The color information obtained in this manner is incorporated into the depth information of the artificial 3D reconstruction.
IPC 8 full level
G07D 7/12 (2016.01); B42D 25/29 (2014.01); G06K 9/00 (2006.01); G06K 19/10 (2006.01)
CPC (source: CN EP US)
B42D 25/29 (2014.10 - CN EP US); G06F 18/2113 (2023.01 - US); G06T 15/205 (2013.01 - US); G06V 20/64 (2022.01 - US); G06V 20/66 (2022.01 - EP US); G06V 20/80 (2022.01 - CN EP US); G07D 7/2016 (2013.01 - CN); G07D 7/202 (2017.04 - EP US)
Citation (search report)
See references of WO 2016170041A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2016170041 A1 20161027; CN 107743627 A 20180227; DE 102015106081 A1 20161027; EP 3286740 A1 20180228; JP 2018521377 A 20180802; US 2018144183 A1 20180524
DOCDB simple family (application)
EP 2016058872 W 20160421; CN 201680034536 A 20160421; DE 102015106081 A 20150421; EP 16723256 A 20160421; JP 2017555368 A 20160421; US 201615568390 A 20160421