A Blind Watermarking Algorithm for Copyright Protection of Vector Geospatial Data Under Controllable Errors Based on DFT
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摘要: 传统的DFT(discreteFouriertransform)变换域水印算法中,水印直接嵌入变换后的系数,导致矢量空间数据误差较大。针对此类算法的缺点,本文提出了基于DFT的可控误差矢量空间数据盲水印算法。该算法通过放大处理DFT变换系数,将水印嵌入幅度系数和相位系数中,水印提取采用投票原则,无需原始数据的参与。试验表明,水印嵌入矢量空间数据引起的误差很小;水印对数据格式转换及常见的几何变换攻击具有很好的鲁棒性。Abstract: InDFTwatermarkingalgorithms,thewatermarksareoftenembeddeddirectlyinthetrans formationcoefficients,causinglargeerrorsinwatermarkeddata.Toovercomesuchdisadvantageofthesealgorithms,ablindwatermarkingalgorithmforcopyrightprotectionofvectorgeospatialdatabasedonerrorreductionisproposed.ThisalgorithmamplifiestheDFTtransformcoefficientsandem bedsthewatermarksintheamplitudecoefficientsandphasecoefficientsbyDFTtransform,andthewatermarkisembeddedseveraltimes.Inaddition,thevotingprincipleisutilizedtodetectthewater mark.Nooriginaldataisneededinthewatermarkextractionprocedure.Theexperimentshaveshownthatspatialaccuracyofthewatermarkeddataisacceptableandthealgorithmisrobusttoavarietyofgeometrictransformationattacks.
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Key words:
- DFT /
- controllableerrors /
- vectorgeospatialdata /
- blindwatermarking
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[1] YanHaowen,LiJun,WenHong.AKeyPoints BasedBlindWatermarkingApproachforVectorGeo SpatialData[J].犆狅犿狆狌狋犲狉狊，犈狀狏犻狉狅狀犿犲狀狋犪狀犱犝狉犫犪狀犛狔狊狋犲犿狊，２０１１，３５（６）：４８５４９２[2] NiuXiamu,ShaoChengyong,WangXiaotong.ASurveyofDigitalVectorMapWatermarking[J].犐狀狋犲狉狀犪狋犻狅狀犪犾犑狅狌狉狀犪犾狅犳犐狀狀狅狏犪狋犻狏犲犆狅犿狆狌狋犻狀犵，犐狀犳狅狉犿犪狋犻狅狀犪狀犱犆狅狀狋狉狅犾，２００６，２（６）：１３０１１３１６[3] KangHII,KimKII,ChoiJUK.AVectorWa termarkingUsingtheGeneralizedSquareMask[C].InformationTechnology:CodingandComputing,ProceedingsofInternationalConferenceonIEEE,SanJose,California,USA,2001[4] LeeSH ,KwonKR.VectorWatermarkingSchemeforGISVectorMapManagement[J].犕狌犾 狋犻犿犲犱犻犪犜狅狅犾狊犪狀犱犃狆狆犾犻犮犪狋犻狅狀狊，２０１３，ｄｏｉ：１０．1007/s11042 011 0894 y[5] SolachidisV,NikolaidisN,PitasI.FourierDe scriptorsWatermarkingofVectorGraphicsImages[C].Proceedingsof2000InternationalConferenceonIEEE(ImageProcessing),VancouverBC,Can ada,2000[6] SolachidisV,PitasI.WatermarkingPolygonalLinesUsingFourierDescriptors[J].犆狅犿狆狌狋犲狉犌狉犪狆犺犻犮狊犪狀犱犃狆狆犾犻犮犪狋犻狅狀狊，犐犈犈犈，２００４，２４（３）：44 51[7] GiannoulaA,NikolaidisN,PitasI.WatermarkingofSetsofPolygonalLinesUsingFusionTechniques994武汉大学学报·信息科学版2015年7月[C].MultimediaandExpo,ICME’02,Lausanne,Switzerland,2002[8] KitamuraI,KanaiS,KishinamiT.CopyrightPro tectionofVectorMapUsingDigitalWatermarkingMethodBasedonDiscreteFourierTransform[C].Geoscienceand Remote Sensing Symposium,IGARSS’01,Sydney,2001[9] WangQisheng,ZhuChangqing,XuDehe.Water markingAlgorithmforVectorGeo spatialDataBasedonDFTPhase[J].犌犲狅犿犪狋犻犮狊犪狀犱犐狀犳狅狉犿犪 狋犻狅狀犛犮犻犲狀犮犲狅犳犠狌犺犪狀犝狀犻狏犲狉狊犻狋狔，２０１１，３６（５）：523 526(王奇胜,朱长青,许德合.利用DFT相位的矢量地理空间数据水印方法[J].武汉大学学报·信息科学版,2011,36(5):523 526)[10] XuDehe,ZhuChangqing,WangQisheng.BlindWa termarkingModelofVectorSpatialDataBasedonDFTofQIM[J].犌犲狅犿犪狋犻犮狊犪狀犱犐狀犳狅狉犿犪狋犻狅狀犛犮犻 犲狀犮犲狅犳犠狌犺犪狀犝狀犻狏犲狉狊犻狋狔，２０１０，３５（９）：１１００ 1103(许德合,朱长青,王奇胜.利用QIM的DFT矢量空间数据盲水印模型[J].武汉大学学报·信息科学版,2010,35(9):1100 1103)[11] WANGQisheng.ResearchonDigitalWatermarkingforVectorGeo spatialDataBasedonDFT[D].Zhengzhou:InformationEngineeringUniversity,2008(王奇胜.基于DFT的矢量地理空间数据数字水印技术研究[D].郑州:信息工程大学,2008)[12] XuDehe.ResearchontheModeloftheDigitalWater markingforVectorGeo spatialDataBasedonDFT[D].Zhengzhou:InformationEngineeringUniversity,2008(许德合.基于DFT的矢量地理空间数据数字水印模型研究[D].郑州:信息工程大学,2008)[13] ZhaoLin.ResearchonAdaptiveVectorMapWa termarkingAlgorithmBasedonDFT[D].Harbin:HarbinEngineeringUniversity,2009(赵林.基于DFT自适应矢量地图水印算法的研究[D].哈尔滨:哈尔滨工程大学,2009)[14] MinLianquan.ASurveyofWatermarkingTech niquesforVectorMapData[J].犑狅狌狉狀犪犾狅犳犌犲狅 犿犪狋犻犮狊犛犮犻犲狀犮犲犪狀犱犜犲犮犺狀狅犾狅犵狔，２００９（２）：９６１０２（闵连权．矢量地图数据的水印技术综述［Ｊ］．测绘科学技术学报，２００９（２）：９６１０２） -
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