Segmenting human hairs and faces
US8638993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2011 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Sep 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/171
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems for segmenting human hairs and faces in color images are disclosed, with methods and processes for making and using the same. The image may be cropped around the face area and roughly centered. Optionally, the illumination environment of the input image may be determined. If the image is taken under dark environment or the contrast between the face and hair regions and background is low, an extra image enhancement may be applied. Sub-processes for identifying the pose angle and chin contours may be performed. A preliminary mask for the face by using multiple cues, such as skin color, pose angle, face shape and contour information can be represented. An initial hair mask by using the abovementioned multiple cues plus texture and hair shape information may be created. The preliminary face and hair masks are globally refined using multiple techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.