Techniques for image segmentation
US9665945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2015 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Mar 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/162
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for image segmentation can include receiving image data of an image including a background and a face of a person in a foreground, and determining a respective a priori probability of a head-shoulder foreground pixel appearing per pixel of the plurality of pixels, according to a positioning result of a plurality of exterior contour points of the face. The techniques can also include selecting foreground and background pixels of the plurality of pixels, according to at least the a priori probabilities, and determining respective color likelihood probabilities of the foreground and the background, according to color feature vectors of the selected pixels. The techniques can also include determining respective posteriori probabilities of at least part of the foreground and at least part of the background, according to the a priori probabilities and the respective color likelihood probabilities. The techniques can also include performing segmentation on the plurality of pixels, according to the respective posteriori probabilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.