TcchniqueoftheImageFircDetectionBasedonLng
WaveletTransform
SPecialty:Autoeontrol:TheoryandEngineering
Name:HushengLi
Instruetor:Prof.HuiqinWallg
ABSTRACT
Theteehniqueofimagefiredeteetingsystemwhiehbasedonvideomonitoringcan
aehievedoubleeffeetoftheseenemonitoringandfiredeteetionwithoutinstalling
imageaequisitionunitadditionally，anditalsoeaneostsavingsandbeavoidofrePeated
investmeni.TheteequehascomParedwiththetraditionalteebniquesoffiredeteetion，
and15notrestrietedbyenvironmenteondition，suchassPaeehigh，streamsPeed.Ithas
manyadvantagessuehasstronganti一interferenee，betterreal一time，highreliability，andit
eaneffeetivelyredueeerrorsandomissionsalann，realizeearlyfiremonitoringand
alann.It15anewfiredetectionteehniquewithnotoueh，highintelligeneeand
sensitiveness.Thetechniquewillbeeomeanewandeffectivemethodtothefire
deteetion.
ThePaPerhasanalyzedthefiredeteetionPrinciPlesandmethodsandPresentedan
methodtotheimagefiredeteetionbased一onliftingwavelettransform.Firstly，the
methodextractstheadjacentframesintherealtimevideoandtransformstheRGB
frameimageintothegrayimage.Thenitenhancesthe诵ageeontrastbysPacedomain
enhaneementandseParatesthetargetfromthebaekgroundwiththresholdsegmentation，
andextractsimageedgewiththealgorithlnoftheedgedeteetionbased一onlifting
wavelettransform.ThenitconstruetscomPrehensiveeriterionaeeordingtotheflame
areaeriterion，theeusPeriterionandsimilarshaPeeriterionwhieheomefromthe
ehangingofframearea，edgeandshaPe.Lastly，themethodeandistinguishearlyfire
image.Simulationresultsshowthatthealgorithinoftheimagefiredeteetion，based一on
liftingwavelettransform，hashigheraceuraeyandstrongerrobust.
Kcywords:Fire
WaV
deteetion;Videoimage;ImageProeessing:Edgedeteetion;Lifting
elCt
Thesis:APPlieationFundameni
目录
1绪论1
1.1选题的背景和意义.............................……1
1.2火灾探测技术发展状况二，........……，.............................……，......................……1
1.3本文主要研究内容.............……，.................................……，........................……3
2火灾探测的原理与技术…”..…“.““.5
2.1火灾产生的机理及发展过程..................................……5
2.1.2火灾的发展过程..............................................................................……5
2.2火灾信号的物理特征及探测技术............................................................……6
2.2.1火灾信号的物理特征......................................................................……6
2.2.2火灾探测技术发展的状况..............................................................……7
2.3基于视频监控的图像型火灾探测技术概论............................................……9
2.3.1图像型火灾探测技术原理，，................................……，.....................……9
2.3.2传统火灾探测技术........................................................................……10
2.3.3新兴火灾探测技术................................................................……，.……11
2.4本章小结....……，........................................................……12
3提升小波与图像边缘检测.”…””.“.….13
_3.1提升小波理论...................................................……13
3.1.1小波分析基础…，......................................................……13
3.1.2基于提升方案的小波变换.........................……、............................……16
3.1.3提升小波的优点.....................……，.......……，..........……、.................……18
3.2火灾图像的边缘检测............................................……18
3.2.2边缘及边缘检测............................................................................……21
3.2.3传统边缘检测方法...........……，............................................……21
3.2.4新兴的边缘检测方法...................................................................……，24
3.3本章小结...……，....................................................................……27
4基于提升小波变换的图像型火灾检测方法..……….“.….28
4.1方法描述…;.........................................................……28
4.2火灾图像的获取..............................................................……29
4.3火灾图像的预处理及分割.......................……，...............……29
4.3.1火灾图像的增强................……，................................……29
4.3.2火灾图像的分割处理.........……、.................................……30
11]
4.4基于提升小波的火灾图像边缘检测算法.......................……30
4.4.1小波的选取.....................................….................……30
4.4.2提升小波变换..............……，.........................................……32
4.4，3图像融合...........................................................……33
4.5火灾火焰的图像判别............................................……，.…，……33
4.5.1火焰面积增长判据.……，.......……，..............……，......……33
4.5.2火焰的尖角增长判据.............................................……34
4.5.3火焰图像的形状相似特性判据.................................……34
4.5.4综合判别...............……，……，............................……36
4.6仿真实验..…，......................................................……36
4.6.1火灾图像增强和分割实验结果...................................……36
4.6.2火灾图像边缘检测实验结果...……，...................................……39
4.6.3基于提升小波的火灾图像边缘检测实验结果.，，.........……40
4.6.4火灾判别.................................……，.....................……42
4.6.5加噪后火灾判别............................……，.............……44
4.7本章小结.……，................……，…，........……‘..……47
5结论................................................................……”.48
致谢二”””””.“”“.50
参考文献......……””...……“二”二””..…””.51
攻读硕士学位期间所发表的论文.”.”.“”””“….54
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