Measurement Of Physical Parameters Of Forest
Fires By Infrared Imaging Methods
Author(s)
J. M. Aranda, J. Meléndez, A. J. de Castro & F. López
Abstract
In the last years, infrared (IR) cameras have been used increasingly in forest fire
related applications, but, in contrast with industrial applications of IR
thermography, quantitative studies are almost nonexistent. This is due to the
complex spectral and spatial structure of the IR emission that prevents a
straightforward interpretation of images. However, multispectral systems, even
with a resolution of only a few bands, can be used to great advantage in order to
classify the infrared scene into different regions (flame, embers, ashes,
background), each with a different spectral signature and affected in a different
way by the atmosphere. In this work it is shown how this procedure makes
possible to take into account spectral structure, in order to measure physical
parameters like rate of spread, embers temperature, and radiated power in the
spectral range of the camera. Measurements have been obtained in several
experimental conditions, and results have been compared to data from
estimations derived from standard methods. This comparison demonstrates the
consistency of the two approaches, and makes possible to estimate also total
radiated power, fire intensity and heat release per unit area from infrared
measurements only.
Keywords: infrared imaging, multispectral, classification, forest fires.
1 Introduction
In the last years, infrared (IR) sensors, operating from satellite, ground-based or
airborne platforms, have been used increasingly in forest fire related applications
[1], including fire danger estimation, fire detection, fire monitoring, mapping of
burned areas and follow-up of after-fire recovery.
Keywords
infrared imaging, multispectral, classification, forest fires.
Related Book
Other papers in this volume
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