Robust colorimetric processing method for paper based sensors
US9686540B2 · kind B2 · utility
8Cited by
26References
21Claims
0Family size
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Key dates
| Filing date | Jul 15, 2015 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Jan 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0461
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure proposes a colorimetric method that couples sensor design with image processing to enable automated evaluation of test results obtained by paper-based sensors. The proposed method can match ink color and dye used in colorimetric reaction in terms of their absorption in spectral range (e.g., red, green, blue). A near-zero absorption channel can then be used to normalize absorption channels and construct a composite image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.