通信工程专业毕业设计（论文）外文翻译

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1、ThepotentialofXMLencodingingeomaticsconvertingrasterimagestoXMLandSVGByronAntoniou,LysandrosTsoulosAbstractTheevolutionofopenstandardsandespeciallythosepertainingtothefamilyofXMLtechnologies,haveaconsiderableimpactonthewaytheGeomaticscommunityaddresse

2、stheacquisition,storage,analysisanddisplayofspatialdata.ThemostrecentversionoftheGMLspecificationenablesthemergingofvectorandrasterdataintoasingle‘‘open’’format.Thenotionof‘‘coverage’’asdescribedinGML3.0canbetheequivalentofarastermulti-banddataset.Ina

3、ddition,vectordatastorageisalsodescribedindetailthroughtheGMLSchemasandXMLitselfcanstorethevaluesofarasterdataset,asvaluesofamulti-tabledataset.UnderthesecircumstancesanissuethatmustbeaddressedisthetransformationofrasterdataintoXMLformatandtheirsubseq

4、uentvisualizationthroughSVG.TheobjectiveofthispaperistogiveanoverviewofthestepsthatcanbefollowedinordertoembodyopenstandardsandXMLtechnologiesintherasterdomain.Thelastpartoftheworkreferstoacasestudythatsuggestsastepbystepmethodologytoaccomplishclassif

5、ication,animportantfunctioninCartographyandRemoteSensing,usingtheXMLencodedimages.©2005ElsevierLtd.Allrightsreserved.Keywords:Openstandards;Rasterimageencoding;Classification1.IntroductionTheadventofXML-basedtechnologieshasgonebeyondtheexpectationsoft

6、hemostoptimisticusers.Revolutionaryideasareemergingforthestorage,exchangeanddisplayofdataandnewformatsarecreatedforalmostallkindsofdata,applicationsandknowledgedomains.Aconsiderablenumberofspecificationshavebeenissuedbyinternationalorganizationsaiming

7、attheprovisionofanefficient‘‘open’’environmenttotheusercommunity.WatchingthisfrenzytrendoftransformingeverythingintoXML-basedstructures,onethingseemsreallyoutoftheway:rasterimages.LanguageslikeHTMLandSVGdonothavesuchastructuralfeatureintheirenvironmen

8、t.Instead,bothofthemprovidemeans(i.e.,orelements)fortheincorporationofrasterimagesintext-basedfiles,usuallywithaninlinereference.Theexistingspecificationsinsteadofdealingwiththeproblembypassitanduserstreatrasterformatsmoreorlesslik