Method and apparatus to estimate scene illuminant based on skin reflectance database
US11908234B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Aug 2, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Some embodiments of a method may include obtaining an image a real-world environment, determining an estimated illuminant spectral power distribution of an illuminant of the real-world environment, and detecting a region of the image representing human skin. The method may further include determining a representative skin color value of the region and based on the estimated illuminant spectral power distribution and the representative skin color value most closely matching the representative color value, selecting a candidate skin reflectance spectrum. The method may further include updating the estimated illuminant spectral power distribution base on the representative skin color value and the selected candidate skin reflectance spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.