Image processing method and system for extracting distorted circular image elements
US9953238B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jul 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an image processing method for automatically extracting distorted circular image elements (109; 601) from an image (101), comprising the steps of determining, by means of a circle detection (102), at least one circular image section (103; 301, 301′) as a first approximation of at least one distorted circular image element (109; 601), then determining, via a statistical color analysis of the at least one determined circular image section (301, 301′), whether the circular image section (301, 301′) belongs to one of one or more predefined color classes and, in case thereof, assigning the circular image section to the respective color class, and, finally, determining an exact shape (109; 601) of the at least one distorted circular element by starting with at least one of the one or more determined circular image sections assigned to one of the one or more color classes and varying the image section to maximize a value of a color-class specific function of the image section. The invention furthermore relates to an image processing system which is configured for performing the steps according to the image processing method described above, and to a use of the ima…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.