Method and a device for extracting color features
US8971619B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2013 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Apr 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/56
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and device for extracting color features, relating to the field of image processing includes converting an original image into sub-images corresponding to channels in a color space, dividing the sub-images into a plurality of cells with identical size, and calculating the color histograms of each of the plurality of cells. A cell and neighboring cells thereof are defined as the effective scope of the cell, and a feature vector of the cell is determined according to a degree of similarity of the color histograms of every two neighboring cells in the effective scope. The feature vectors of the cells in the sub-images are concatenated to obtain feature vectors of the sub-images, and a feature vector of the original image is obtained according to the feature vectors of the sub-images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.