Methods and systems for characterizing regions of substantially-uniform color in a digital image
US8134762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Nov 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the present invention relate to systems and methods for characterization of background regions of substantially-uniform color in a digital image. According to a first aspect of the present invention, a histogram of the first-channel values of a plurality of image pixels may be formed, and a peak region in the first-channel histogram may be detected. Subsequently a histogram of image values of a second channel may be formed accumulating second-channel values for only those image pixels with first-channel values within the peak region of the first-channel histogram, and a peak region in the second-channel histogram may be detected. An image characteristic may be associated with image pixels with first-channel and second-channel values within the first-channel peak and the second-channel peak regions, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.