Spectrum recovery in a sample
US10444074B1 · kind B1 · utility
3Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Mar 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/467
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and a system are provided to measure transmittance or reflectance of a color specimen by using a transformation matrix obtained from the measurement values of a series of known transmittance or reflectance calibration color standards and multiple flashes from different illumination sources. A color spectrum can be determined with reduced error by calculating the reflectance spectra of an object using measurement matrices obtained under at least two illuminants and the transformation matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.