基于全变分的烟雾浓度检测方法  

Method of Smokescope Detection Based on Total Bounded Variation

作　　者：安明伟 钱丽英[1] 李洪昌[1] AN Mingwei;QIAN Liying;LI Hongchang(Network and Communication Institute,Nanjing Vocational College of Information Technology,Nanjing 210023,China)

机构地区：[1]南京信息职业技术学院网络与通信学院,南京210023

出　　处：《火力与指挥控制》2022年第9期153-158,共6页Fire Control & Command Control

基　　金：江苏省高校自然科学研究基金资助项目(19KJB510043)。

摘　　要：环境烟雾浓度影响着很多行业的实施,是一个重要气象观测要素,消光系数是烟雾浓度检测的一个重要参数。通过分析含有烟雾信息的图像,发现图像变得模糊时,全变分降低,在推算出图像全变分与消光系数关系的基础上,提出了一种基于全变分的烟雾浓度检测方法。根据Koschmieder理论公式,将消光系数由常数变量视为时间函数,构建泛函,得到亮度曲线。通过全变分原理及分段平稳思想进行分析,并对亮度曲线进行迭代逼近,求出当前时刻消光系数,估算出实时的烟雾浓度值。算法充分利用其采集的环境图像,屏蔽了对烟雾静态特征的复杂计算,降低繁琐计算带来的误差,验证对比显示,全变分方法输出高效稳定。As an important meteorological element,the environment smokescope affects the implementation of many industries.Extinction coefficient is an important parameter of smoke concentration detection.By analyzing the image containing fog and haze information,it is found that the bounded variation decreases when the image becomes blurred.Based on the relationship between the total bounded variation and extinction coefficient,a smokescope detection method is proposed based on total bounded variation.According to Koschmieder’s smokescope theoretical formulas,the extinction coefficient is regarded as a time function from a constant variable,the function is constructed,and the brightness curve is obtained.The luminance curve is analyzed by the principle of total bounded variation and the idea of section stationary.The luminance curve is approximated,the extinction coefficient at the current time is calculated,and the value of real-time smokescope isestimated.The algorithm makes full use of the collected environmental images to shield the complex calculation of the static characteristics of smoke and reduce the errors caused by tedious calculation.The verification comparison shows that the output of the total variational method is efficient and stable.

关 键 词：全变分 消光系数 亮度曲线 烟雾浓度检测 烟雾图像 

分 类 号：TH702[机械工程—仪器科学与技术]