Electronic device comprising minimum sensing area and fingerprint information processing method thereof
US9858465B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 11, 2014 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Jun 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1347
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, provided is a method by which an electronic device comprising a minimum fingerprint sensing area processes fingerprint information, comprising the steps of: acquiring a fingerprint image from the fingerprint sensing area; calculating a shade change value, defined by a shade difference value from a neighboring pixel, for each pixel of the fingerprint image; selecting points, as feature point candidates, of which the shade change value is a threshold value or more; applying artificial distortion for noise filtering to an area including the feature point candidates and neighboring pixels thereof; and selecting, as final feature points, candidates of which the shade change value after the artificial distortion is within a threshold range from among the feature point candidates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.