Contextual algorithm adapted for NOAA-AVHRR fire detection in Indonesia

widely cited contextual algorithm for fire pixel detection was applied to N OAA-AVHRR data of Indonesia acquired during the severe fire season of 1997. The contextual algorithm tended to underestimate the number of fire pixels . Many fire pixels which could be identified visually in AVHRR band 3 image ry were missing in the output of the contextual algorithm. Through experime ntation with the data, the authors were able to developed two alterations t o the original algorithm to enhance the accuracy of fire detection in the I ndonesian context. The enhanced algorithm was made capable of detecting fir e pixels that the original algorithm failed to identify.