Method for identifying color in machine and computer vision applications
US8064691B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 22, 2008 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Jun 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for identifying color in a target creates a ratio color space by determining the largest color component value of each pixel in an image and creating a ratio of all of the color component value with the largest component value for each pixel. The ratio for the color component of each pixel undergoes a threshold test to identify each color component as a rich shade or a fade shade. The ratio space color components are converted to a black and white image. Color information of adjacent pixels are clumped together to form blobs of the same color. The blobs are filtered by shape, color, location, or orientation and sorted to find targets that consist of a predefined pattern with the desired characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.