Quantifying color changes in chemical test pads induced by different concentrations of analytes under different lighting conditions
US11802839B2 · kind B2 · utility
1Cited by
12References
20Claims
0Family size
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Key dates
| Filing date | Sep 7, 2021 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Sep 17, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Color quantification of chemical test pads and titration of analytes can be performed under different lighting conditions. In one embodiment, the lighting condition is estimated under which a digital image is captured and utilized to select a set of reference colors from which the quantified color is compared to determine the titration. In another embodiment, a plurality of comparisons are made with different lighting conditions with the result having the highest confidence level being selected to determine the titration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.