Apparatus and processes for photosynthetic activity measurement and mapping
US10620175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2016 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Nov 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8466
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining chlorophyll content of a plant comprises capturing a first image comprising light transmitted through a leaf of a plant; capturing a second image comprising light reflected from the leaf of the plant; estimating, from a plurality of pixels in the first image, a transmissive chlorophyll concentration value of the leaf; estimating a reflectance chlorophyll concentration value for the leaf from a plurality of pixels in the second image using bidirectional reflectance parameters for which a variance of the reflectance chlorophyll concentration value across the plurality of pixels in the second image is reduced; and determining an estimated chlorophyll concentration value for the plant based at least on the transmissive chlorophyll concentration value and the reflectance chlorophyll concentration value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.