Radiant energy – Infrared-to-visible imaging
Patent
1997-06-02
1999-08-10
Hannaher, Constantine
Radiant energy
Infrared-to-visible imaging
348144, 25039905, 25033915, 25033911, 2503418, G01J 350, G08B 1712, G01N 2125
Patent
active
059362456
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.
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Proceedings of the International Airborne Remote Sensing Conference and Exhibition, Vol. 2, Sep. 12, 1994 p. 129-141, Abrosia V.G. et al; "AIRDAS, Development of a Unique Four-Channel . . . Disaster Assessment".
Goillot Charles
Renot Andre
Sander Andre
Wadsworth Alain
Hannaher Constantine
Institut Francais du Pe'trole
Jiron Darren M.
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