Method and system for remote sensing of the flammability of the different parts of an area flown over by an aircraft
US5936245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention is a method and system for detecting, by means of specific processings of images of an area flown over taken in several spectral bands, signs indicative of a stress of the vegetation and the presence of spots where fire is likely to occur or spread. Images of the area flown over are acquired by means of a photography device (1) in a first spectral band selected in the red part (R) of the visible spectrum, in a second spectral band of the near infrared spectrum (N.I.R.) and in a third spectral band in the thermal infrared spectrum selected to locate parts of the area showing both a hydric stress and hot spots. Coded composite images are obtained by color coding of the aforementioned spectral bands and the images obtained in the three spectral bands are combined by means of a processing system (12, 13), which identifies fire development hazards caused by water deficit and local overheating. The system can be used for fire forecast, protection and fighting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.