Method for processing an image of a papillary impression
US10997391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2019 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Jun 3, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/993
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of processing a papillary print includes a step to detect a singular zone on the image, the singular zone being characterised by a position, and an orientation representative of a value of the gradient of the intensity of the image; a step to extract control patches, each control patch having one of the singular zones detected in step a); a step to project control patches in a reference base, so as to determine the projection coordinates of each control patch on the reference base, projection of a control patch on the reference base forming a projected patch; and a step to calculate a difference in projection of control patches relative to the projected patches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.