Method of determining and treating the health of a crop
US6529615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30188
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for determining the health of crops in a field and for correcting deficiencies in the health of the crops is disclosed. The process includes georeferencing aerial photographs of at least a portion of the field, the aerial photographs having a particular spatial resolution; determining the green plane in the aerial photographs thus taken; preparing a relative greenness map of the field based upon the nitrogen reference area, the relative greenness map providing crop status information having spatial resolution equivalent to the spatial resolution of the aerial photographs; converting the relative greenness map to a nitrogen recommendation map having spatial resolution equivalent to the spatial resolution of the photographs; and applying nitrogen to the field according to the nitrogen recommendation map, whereby the nitrogen is applied to the field without loss of spatial information. A process for treating crops is also disclosed. The process includes establishing, in a field to be treated, at least one predetermined area of high nitrogen reference; photographing from the air, georeferenced portions of the field, using a particular spatial resolution; differentiating soil …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.