Systems and methods for sensor-independent illuminant determination
US11455535B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 14, 2020 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Feb 11, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for sensor-independent illuminant determination are provided. In one embodiment of the method, the method includes receiving one or more training images in raw-RGB format; generating an input histogram from each of the inputted raw images; generating a learned mapping matrix that map raw images to a learned mapping space by passing the one or more input histograms to a trained first machine learning model; generating one or more mapped images by applying the learned mapping matrix to the one or more training images; generating a mapped histogram from each of the mapped images; and determining the result illuminant by passing the one or more mapped histograms as input into a second machine learning model. A final illuminant for an input image can be determined by applying the result illuminant to the input color space of the input image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.