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基于视频数据的公路隧道火灾预警算法

Keywords: 隧道,火灾预警,视频数据提取,概率模型

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Abstract:

通过对隧道视频数据的分析,提出了一种适合于隧道环境下的火灾预警算法.该算法采用阈值和背景自适应更新策略,解决了隧道环境下光线条件变化对火焰识别系统的影响,利用二维投影技术实现了火灾疑似区域的快速提取,并结合火灾的亮度变化率来提取火灾火焰的闪动特性.最后给出了火灾疑似概率模型,以此来反映视频图像中出现火焰的几率.实验结果表明,该算法对影响隧道的车辆运动形成的干扰、路灯和光线条件变化有很好的适应性,其识别速度达到3~5s,识别率可以达到97%以上,具有较强的实用价值.

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