Color calibration of display modules using a reduced number of display characteristic measurements
US11749145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2019 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Apr 23, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This document describes techniques and apparatuses for performing color calibration of display modules using a reduced number of display characteristic measurements. In aspects, methods include generating a measured lookup table (50) for a source display module (32), using dynamic optimization to down-sample the measured lookup table and select a set of color patches, sending the color patches to a testing display module; measuring output values for the testing display module; generating a sparse lookup table (52) relating the color patches and the measured output values, up-sampling the sparse lookup table to a forward lookup table (54), and inverting the forward lookup table to generate a reverse lookup table (56). The reverse lookup table (56) can be utilized to determine correct output values (29) for driving a target display module to generate color lights within a display module color gamut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.