中文摘要：

根据野外森林环境下早期烟火的火焰特征，描述了火焰识别的一般判断方法，本研究在原判断基础上利用火焰几何特征来提高火焰判断精度的方法，提出了圆形度、矩形度、平均密度和偏心度4种算法作为火焰几伺特征的判断依据。与其它的火焰识别方法相比较，该算法在野外的复杂环境中，识别的准确性更高，抗干扰能力更强。

英文摘要：

According to the flame characteristics of the early wild forest fire, a brief description was made on common estimation method of the flame Roundness, rectangle, mean density and eccentricity of fire characters could better estimate the fire. And it had higher accuracy and anti-interference compared with other estimation methods.