通信工程专业毕业设计（论文）外文翻译

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1、ThepotentialofXMLencodingingeomaticsconvertingrasterimagestoXMLandSVGByronAntoniou,LysandrosTsoulosAbstractTheevolutionofopenstandardsandespeciallythosepertainingtothefamilyofXMLtechnologies,haveaconsiderableimpactonthewaytheGeomaticscommunityaddressestheacqui

2、sition,storage,analysisanddisplayofspatialdata.ThemostrecentversionoftheGMLspecificationenablesthemergingofvectorandrasterdataintoasingle‘‘open’’format.Thenotionof‘‘coverage’’asdescribedinGML3.0canbetheequivalentofarastermulti-banddataset.Inaddition,vectordata

3、storageisalsodescribedindetailthroughtheGMLSchemasandXMLitselfcanstorethevaluesofarasterdataset,asvaluesofamulti-tabledataset.UnderthesecircumstancesanissuethatmustbeaddressedisthetransformationofrasterdataintoXMLformatandtheirsubsequentvisualizationthroughSVG

4、.TheobjectiveofthispaperistogiveanoverviewofthestepsthatcanbefollowedinordertoembodyopenstandardsandXMLtechnologiesintherasterdomain.Thelastpartoftheworkreferstoacasestudythatsuggestsastepbystepmethodologytoaccomplishclassification,animportantfunctioninCartogr

5、aphyandRemoteSensing,usingtheXMLencodedimages.©2005ElsevierLtd.Allrightsreserved.Keywords:Openstandards;Rasterimageencoding;Classification1.IntroductionTheadventofXML-basedtechnologieshasgonebeyondtheexpectationsofthemostoptimisticusers.Revolutionaryideasareem

6、ergingforthestorage,exchangeanddisplayofdataandnewformatsarecreatedforalmostallkindsofdata,applicationsandknowledgedomains.Aconsiderablenumberofspecificationshavebeenissuedbyinternationalorganizationsaimingattheprovisionofanefficient‘‘open’’environmenttotheuse

7、rcommunity.WatchingthisfrenzytrendoftransformingeverythingintoXML-basedstructures,onethingseemsreallyoutoftheway:rasterimages.LanguageslikeHTMLandSVGdonothavesuchastructuralfeatureintheirenvironment.Instead,bothofthemprovidemeans(i.e.,orelements)fo

8、rtheincorporationofrasterimagesintext-basedfiles,usuallywithaninlinereference.Theexistingspecificationsinsteadofdealingwiththeproblembypassitanduserstreatrasterformatsmoreorlesslik