Ten years ago Dozier presented a bispectral model for the detection of sub-resolution high temperature features in NOAA AVHRR satellite images. This model builds on Planck's law and theoretically derives brightness temperatures and fractions of sub-resolution fields of high temperatures, such as wildfires, using AVHRR channel 3 and 4 thermal data. The original Dozier model was based on a larger number of assumptions. Most fire detection studies have therefore turned to simpler approaches. Still, the original model has been successfully applied in several fire studies in various ecosystems. Lately, some studies have tried to refine the model.
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