Method and device for aligning color channels
US11611732B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Aug 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of aligning a plurality of color channels of a projector is provided. The method includes: for each color channel, (i) projecting test pattern on a surface; (ii) capturing image of the test pattern generated on the surface; and (iii) adding the captured image to an image set. Once the captured images for each color channel are added to an image set, identifying a reference position based on the image set. This is followed by processing the image set to estimate a divergence of the respective test patterns for each color channel with respect to the reference position, followed by computing a corrective function for each color channel and applying the respective corrective function to each color channel to align the color channel to the reference position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.