5. Conclusion
In this paper, calculated the optical flows with RGB color separations method 4 types of fire are analyzed based on dynamic textures. For the flaming plastics (polyurethane) fire and the flaming liquid (n-heptane) fire, before burning the optical flow of polyurethane change from 0.10 to 0.18; the optical flow of n-heptane change from 0.12 to 0.21. And in the middle stage of combustion the optical flow of polyurethane increase to 0.52 0.68; the optical flow of n-heptane increase to 3.79 4.73.The changes before and after combustion are obvious. For the smoldering (pyrolysis) wood fire and the smoldering Cotton fire, before the combustion the optical flows are small, in the middle of combustion, the optical flow of wood will increase to about 0.54 and the optical flow of cotton will increase to about 0.83.The Experimental results shows that dynamic texture analysis of fire with the Optical flow method based on RGB color separations can detect the fire effectively.