Electronic device for estimating camera illuminant and method of the same
US12293497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2023 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Mar 17, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/17
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for processing image data may include: obtaining a first image and a second image that capture a same scene in different views, from a first camera and a second camera, respectively; spatially aligning the first image with the second image; obtaining a color transformation matrix that maps the first image to the second image based on color values of the first image and the second image; obtaining an estimated illuminant color from an output of a neural network by inputting the color transformation matrix to the neural network, wherein the neural network is trained based on a pair of reference images of a same reference scene with a color rendition chart that are captured by different cameras having different spectral sensitivities; and performing a white balance correction on the first image based on the estimated illuminant color to output a corrected first image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.