Robust automatic determination and location of MacBeth color checker charts
US9064314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2013 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Sep 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/90
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A MacBeth color checker chart automatic detection system includes an imaging unit that provides an image and a processing unit that applies an edge detection operation to the image and performs a flood-fill operation on the image to provide a flood-filled image. Additionally, the MacBeth color checker chart automatic detection system includes a testing unit that tests the flood-filled image to provide a modified flood-fill image, wherein a set of heuristic tests are employed to automatically determine quantity and location of MacBeth color checker charts. Generally, the set of heuristic tests are employed to automatically reject regions that are unlikely to belong to a MacBeth color checker chart and to cluster the remaining regions that are likely to belong to a Macbeth color checker chart. A MacBeth color checker chart automatic detection method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.