Color calibration algorithm
US10972634B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2018 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Aug 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00087
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for calibrating a dyeing machine, comprising: for each of multiple colors: performing a maximizing stage to determine an effective maximum ink dispensing rate corresponding to an effective maximum colorimetric value for the dyeing machine; performing a linearizing stage, comprising: determining multiple ink dispensing rates for performing the linearizing stage by dividing the effective maximum ink dispensing rate into multiple intervals, calculating from the effective maximum colorimetric value, a linear correspondence between the multiple ink dispensing rates and multiple calculated colorimetric values, dyeing a set of substrates according to the multiple ink dispensing rates, acquiring color values of the dyed set of substrates, interpolating a non-linear correspondence between the multiple ink dispensing rates and the acquired color values, and mapping the linear correspondence to the non-linear correspondence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.