Method for segmenting fingers
US9336425B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Oct 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30196
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for segmenting fingers may include: a capture step during which the acquisition device captures an image of the fingers and of the sight; a computing step during which the processing unit computes the unrolled phase image from the image of the thus captured; a derivation step during which, for each pixel of the phase image thus computed, the processing unit computes the derivative of the phase along the isointensity axis of the sight; a regionalisation step during which the processing unit associates each pixel where the derivative of the phase has been computed with a region grouping all the adjoining pixels step by step where the derivative of the phase has the same polarity; and a recognition step during which the location of each finger is recognised from the analysis of the regions thus determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.