Profile adjustment method, profile adjustment apparatus, and profile adjustment system
US10455122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Sep 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Device-independent coordinate values at an adjustment point are converted into second coordinate values in accordance with a B2A table of an output profile, and the second coordinate values are converted into adjustment target PCS values, which are the device-independent coordinate values, in accordance with an A2B table of the output profile. When values obtained by adding relative values of an adjustment target using PCS coordinates as a reference, are assumed as target PCS values, in an optimization step, an optimization process is carried out to obtain an optimal solution of adjustment color values. The optimization process includes an element for bringing provisional PCS values, obtained by converting, in accordance with the A2B table, provisional color values obtained by adding adjustment color values to the adjustment target color values, closer to the target PCS values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.