Method and apparatus for detecting bubbles and/or creases on labeled containers
US10074169B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2012 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Oct 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for detecting bubbles and/or creases on labeled containers. Bubbles/creases can be detected without comparison with a previously stored reference recording by virtue of the fact that a label to be examined is illuminated with a first flash of light, for example using the surface radiator, and is recorded in a first camera image, that the label is also illuminated with at least one second flash of light, for example using the directional radiator, with a changed directional characteristic and is recorded in a second camera image, and that a brightness difference between the first and second camera images is calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.