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The temperature difference between fires extinguishing agent dispersion field caused by grenade explosion scatters and background is tiny and fire extinguishing agent dispersion presents obscure configuration. These induce the lowest contrast of the infrared fire extinguishing agent dispersion image and the borders of the fire extinguishing agent dispersion are difficult to be extracted. According to the characters of fire extinguishing agent dispersion and infrared image, a border detecting method by dynamic texture and mathematical morphology was proposed. Firstly, the infrared image sequence was presegmented by dynamic texture method, and then the edges in fire extinguishing agent dispersion were extracted by Canny operator. The extracted edges were dilated, labeled and selected by the mathematical morphology and the true dispersion borders were extracted. The experimental results show that processing the fire extinguishing agent dispersion images by the methods mentioned above can effectively extract the borders of the fire extinguishing agent dispersion images and get better results, which can be the foundation of measuring the fire extinguishing agent dispersion.

Border Detecting Method for IR Image of Fire Extinguishing Agent Dispersion