航空影像色彩一致性处理算法研究

航空影像色彩一致性处理算法研究王邦松,艾海滨,安宏,张力(,730070;,10039;68011,730020):2010-01-11:863(200*AA***501):(1984~),,,GISEmail:[e-mail]:航空影像的色彩一致性处理,又称影像匀光匀色,是正射影像生产过程中的重要环节之一,本文从色彩学统计学人体视觉等多角度出发,通过适当地改变原始影像亮度对比度,提出了解决影像中大面积雾霭的方法,对于影像拼接之后出现的不同影像间色彩反差明显的现象,通过调整影像统计直方图,取得了很好的效果:航空影像;色彩一致性;匀光匀色;统计直方图doi:10.3969/j.issn.1000-3177.2011.01.009:TP751:A:1000-3177(2011)113-0045-05ResearchonColorConsistencyProcessingofAerialImagesWANGBangsong,AIHaibin,ANHong,ZHANGLi(DepartmentofMathematicsandSoftwareEngineeringofLanzhouJiaoTongUniversityLanzhou730070;ChinaAcademyofSurveying&MappingBeijing100039;Troops68011ofChinaPeoplesLiberationArmyLanzhou730020)Abstract:Thecolorconsistencyprocessingofaerialimages,orbrightness&colordodging,isanimportantpartofprocessinginorthophotoproduction.Inthispaper,analgorithmisproposedtosolvetheimagescoveredwithlargescalemist,referringofcolorscience,statistics,humanvisualscienceandsoon,throughmodifyingbrightnessandcontrastoforiginalimagesappropriately.Regardingmuchmoredifferencebetweenthecolorofimagesaftermosaics,anadjustingimagehistogram,asagoodsolution,isadvanced.Bothalgorithmsachievedwonderfulresults.Keywords:aerialimages;colorconsistency;brightness&colorDodging;statisticshistogram1,,,,,,:,,;,()2,,,452011.1遥感信息,,,,,:Mask()[7][2][3]Wallis[3]2.1MaskMask,(),,,,,Mask,,(),,,,,2.2,,,,,,,,,2.3Mask,,,,,,,,,,,,2.4WallisWallis,,,,,,,,,,,,,(1)1Mask,,,,,,,,,Wallis,3,,,,,,3.1,0~255(),046遥感信息2011.1255minRank(,00,10,20,310,45,...,3),255maxRank0.5%minRank,(2550)0.5%maxRank,Differ(1)gnew=gorg-minRankDiffer*255(1)Differ=maxRank-minRank(2),gorg,gnew,minRank,,maxRank(34):fi(x,y)=01........fi(x,y)!=i.......fi(x,y)==i(3)hi=hi=0wj=0fi(i,j)(4),hii,w,h()3.2,,1,2124,,,,,Wallis,,(1),,,,,,,,,,,,,,,,,,,,4.1,,,,472011.1遥感信息T(x),Fs(x),Fr(x),T(x),ij,T(i)T(j),:T(x)=Fr(Fs(x))(5),Fr(x)0,Fr(x),,:T(x)=min0i255(Fs(x)Fr(i))(6)4.2,:,;,;,,,;,;,4.3,,Wallis;,,345648遥感信息2011.1,,,Wallis,,Wallis,5,,,,,,,,,,,,,,,,,,,,[1],.CBERS02BCCD[J].,2008,10(33):207-208.[2].[D].,2005.[3].[D].,2008.[4].[D].,2009.[5],.[J].,2007(13):206-207.[6].[M].,.2008.[7],.Mask[J].(),2004,4(4):219-323.NRO26426,1(Minotaur)(NRO)26NRO,:NRO,NROL66,(RPP)NRO(RobertBrodowski):,NRONRO,NRO1,NRO1992,1000(453.6):15,ORS1,,4548,,()492011.1遥感信息