数／模成像系统的图像质量评价

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1、中国印刷与包装研究第2期(筵鲞)研究论文7EvaluationofImageQualityofDigital-AnalogImagingSystemWANGQiang，YANGGenfu，TANGXueli{1．SchoolofPrintingEngineering。HangzhouDianziUniversity,Hangzhou310018。China；2．BeijingFounderElectronicsCo．，Ltd．，Beijing100085，ChinaJAbstractDigital—analogimagingsystemwhichintegrateddigi

2、talimagingandAgXphotographicimagingsystemisthebestmeanstoreproduceandsimulatethedigitalimages．TheadaptingofdigitalimagingandphotographyofAgXisthekeyofoptimizingoutputimagequalityofdigital—analogimagingsystem．Inthispaper，basedonthedesigningdigitalimagetestchartwhichincludedqualityelementssu

3、chasdensitystepwedges，colorchart，edgesandsinusoidalpatternsindiferentAgXphotosensitivematerial，haveobtainedimagequalityparameterssuchasitsMTF(ModulationTransferFunction)，WienerspectrumandGamuttoevaluatethemodulationtransfercharacteristics，noiseandcolorreproductionefectofthedigital·analogim

4、agingsystemobjectivelybymicro-densitymeasurementmethods．KeywordsDigital-analogimagingsystem；Imagingquality；Evaluatingmethod数／模成像系统的图像质量评价王强，杨根福‘，汤学黎(1．杭州电子科技大学新闻出版学院，杭州310018；2．北京北大方正电子有限公司，北京100085)摘要数／模成像系统是一种集成数字成像与传统银盐照相成像系统优势，实现数字图像复制与模拟的最佳方法。优化数／模成像系统输出图像质量的关键是确保数字成像技术与银盐照相技术的适配。本文通过

5、专门设计测试表中的密度梯尺、色标、刃边和正弦模版等质量元素，并采用微密度测量方法获得了不同银盐感光材料的调制传递函数、Wiener频谱和色域等系列图像质量参数，从而客观地评估数／模成像系统的调制传递特性、噪声和色彩复制效果。关键词数／模成像系统；成像质量；评价方法中图分类号TP751．1文献标识码AAgXphotographyhaveformedanadvancedimaging0Introductionsystem，digital—analogimagingsystem，byintegratingeachother⋯．Itintegratestheadvantagesof

6、digitalWhiledigitalimagegrowspopulartoday，digitalimagingsystemandanalogimagingsystem．Thedigitalimagingtechnologydoesnotreplacethesilverhalideimagingtechnologyisgoodatimagecontrastcontrol，(AgX)photography．Thedigitalimagingtechnologyandcoloradjustment，imagesharpening，combinationoftext，收稿日期：2

7、009一Ol一19修回日期：2009—03—508RESEARCHPAPERSCHINAPRINTINGANDPACKAGINGS!Vo!：!：坐sensor．Onlybyestablishingascientificandrationalinputgraphicandimage，imagedefectsremovalandimagemask，andmakestheimagecopy，storeandtransferbyandoutputlinkages，evaluatingimagequalityparamete