火炮内膛图像膛线识别及其参数计算方法研究

10232010816711815(2010)23578904ScienceTechnologyandEngineeringVol10No23Aug20102010SciTechEngng火炮内膛图像膛线识别及其参数计算方法研究郭琦傅建平李雷雷洁(,050003)摘要火炮内膛图像膛线识别及其参数计算是内膛质量评估的基础,关系到内膛疵病分析精度及其部位准确度基于内膛图像灰度分布的特点,确定阴阳线交界点,应用数据拟合方法求得膛线缠角,采用图像处理技术将线膛火炮的内膛图像划分为阴阳线及其过渡区域三部分,结果显示该方法具有良好的识别效果,为火炮内膛疵病图像分割与识别作好准备关键词内膛图像膛线识别区域划分参数计算中图法分类号TP39141;文献标志码A2010524:(1985),,,[1],,,,,,,[2],,,,1火炮膛线结构及膛线区域划分1,[3],,-,,,,,12火炮膛线识别与参数计算,,,212,526752(),,,,22,3,4,4323,,,AB,,,,f(i,j),i![1,M],j![1,N],MN;,,[m,n],Bn-mA+B,,M:g(i)=minj![m,n]f(i,j);i![1,M]M(xi,yi),i!1,2,∀,M,:f(xi,yi)=g(i),i![1,M]22,M,,,[3],,,f(i,j),i![1,M],j![1,N]M(x1,y1),(x2,y2),∀,(xM,yM),y=ax+b,:minJ=min#Mi=1(yi-a-bxi)2:J/a=0;J/b=0:a=M#Mi=1xiyi-#Mi=1xi#Mi=1yiM#Mi=1x2i-#Mi=1xt2;b=1M#Mi=1yi-aM#Mi=1xi,:p=a,p:=arctanp23,,[4],,[5]f(x,y),,y=pxf(x,y)1,S,S0,,579010,,T,:f(x,y)=0,ST;1,S∃T,ST,y=pxS∃T,y=px24,,,,,,6,L1L2,AB:A=L1sin(arctan(p));B=L2sin(arctan(p))3实验结果分析2,;4,5261000(),,455261000()45,65261000(),6205206,116111,1216121512,,5,,,,4结束语,,,,,579123,:1,,,,2003;23(6):6946982:,20063MATLAB:,2004:91924,,,2003;17(2):71755MATLAB76:,2009:121122ResearchforRiflingRecognitionandParameterCalculationonGunBoreImageGUOQ,iFUJianping,LILe,iLEIJie(Dept1,OrdnanceEngineeringCollege,Shijiazhuang050003,P.R.China)[Abstract]Riflingrecognitionandparametercalculationongunboreimagearethebasicofgunborequalityevaluation,whichrelatetotheanalyseprecisionandthepositionofgunboreflawBasedonthecharacteristicofgrayleveldistributingmakescertainintersectionsofriflingandcaculatethetwistangleofriflingbydatefittingGunboreimageisdividedtohatchingofrifling,landofriflingandtransitionalregionbyimageprocessingtechnologyTheresultdemonstratesthatthismethodhasagoodeffectwhichispreparedforthesegementationandtherecognitionongunboreflawimage.[Keywords]gunboreimageriflingrecognitionimagesegmentationparametercalculation(上接第5788页)1,1986;(11):64702,,,1997;(5):21253:,20014,,SerA,1993;8(3):2732845,,,Tecplot,2010;(1):DynamicVisualizationofCurrentPatterninShashiReachCHENXian,HANYaqiong,CHENShangpo,ZHULei(StateKeyLaboratoryofWaterResourcesandHydropowerEngineeringScience,WuhanUniversity,Wuhan430072,P.R.China)[Abstract]Aboutthecurrentpattern,thetraditionalmanifestationwasstereotypedTakingtheShashireachforexample,thecurrentpatternvisibleismadewithriverdynamicsandcomputergraphics,basedonprototypeobservationdataItwilltransferlargenumberofrealandeffectiveinformationinashorttime,contributetothemanagementandstaffofmakingdecisionsandconstruction.[Keywords]Shashidynamicvisualizationcurrentpattern579210