The fire detection method using video image

A fire detection method using video images is provided to detect flames within a detection area automatically and to respond to the initial flame rapidly by obtaining a binary image by a flame candidate pixel, and another binary image by comparing the binary image with the color image. A fire detection method using video images comprises the steps of: outputting an RGB(Red, Green, Blue) color image(Time=t) from a color camera and outputting an RGB color image(Time=t-1); converting two RGB color images into an HSI(High Speed Interface) color model; obtaining a binary image(Ft) by a flame candidate pixel by using the color features of the HIS color space through a following formula; Ft-1(i,j)=1 if (I(i,j)>240 AND S(i,j) r; and comparing the binary image(B) with a threshold which is Theta by using a following formula; if#{BlB=1}>Theta OFF Otherwise to judge the fire finally.