This paper presents techniques to reduce false alarms in forest-fire detect
ion systems based on infrared cameras. Several software components to imple
ment these techniques are discussed. The components are based on thresholds
, oscillation detection, matching of visual and infrared images, memory, me
teorological information, motion, size, shape, solar conditions and locatio
n. The paper includes a description of experiments in two forest environmen
ts, showing the ability of the proposed techniques to discriminate between
forest fires and false alarms. (C) 1999 Elsevier Science Ltd. All rights re
served.