The present invention relates to a fire-detecting technology, belonging to a fire difference analytic technique. Said invention uses a colour CCD camera system, and uses the different reflections of coloured image three-primary colours on early fire to make difference operation for red and blue primary colour components, and make binaryzation and secondary difference operation, and uses the increasing rate of fire area difference image to determine fire anomalism, and adopts a direct linear transformation technique to make space location of fire so as to raise the reliability of fire detection. Said inventionc an use existent closed circuit television system and use computer to implement automatic detection and location for fire and linkage remedy. |