ISO/IEC 8632-1-1999 信息技术计算机图形存储和传送图片描述信息的元文卷第1部分:功能规范
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【英文标准名称】:Informationtechnology-Computergraphics-Metafileforthestorageandtransferofpicturedescriptioninformation-Part1:Functionalspecification
【原文标准名称】:信息技术计算机图形存储和传送图片描述信息的元文卷第1部分:功能规范
【标准号】:ISO/IEC8632-1-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:功能描述;储存;计算机制图;图象描述信息;信息处理;间位存储器;交换;信息技术;规范
【英文主题词】:Computergraphics;Exchange;Functionaldescriptions;Imagefiles;Informationprocessing;Informationtechnology;Picturedescriptioninformation;Specification;Storage
【摘要】:ISO/IEC8632providesafileformatsuitableforthestorageandretrievalofpicturedescriptioninformation.Thefileformatconsistsofanorderedsetofelementsthatmaybeusedtodescribepicturesinawaythatiscompatiblebetweensystemsofdifferentarchitectures,compatiblewithdevicesofdifferingcapabilitiesanddesign,andmeaningfultoapplicationconstituencies.Thispicturedescriptionincludesthecapabilityfordescribingstaticimages.Theelementsspecifiedprovidefortherepresentationofawiderangeofpicturesonawiderangeofgraphicaldevices.Theelementsareorganizedintogroupsthatdelimitmajorstructures(metafiles,pictures,andapplicationstructures),thatspecifytherepresentationsusedwithinthemetafile,thatcontrolthedisplayofthepicture,thatperformbasicdrawingactions,thatcontroltheattributesofthebasicdrawingactions,thatallowapplication-specificstructuringtobeoverlaidonthegraphicalcontent,andthatprovideaccesstonon-standarddevicecapabilities.Themetafileisdefinedinsuchawaythat,inadditiontosequentialaccesstothewholemetafile,randomaccesstoindividualpicturesandindividualcontext-independentapplicationstructuresiswell-defined.Applicationswhichrequirerandomaccesstopicturesand/orcontext-independentapplicationstructureswithinpicturesmay,withinthemetafile,definedirectoriestothesepicturesand/orcontext-independentapplicationstructures.Themetafilemaythenbeopenedandrandomlyaccessedwithoutinterpretingtheentiremetafile.Inadditiontoafunctionalspecification,twostandardencodingsofthemetafilesyntaxarespecified.Theseencodingsaddresstheneedsofapplicationsthatrequiresmallmetafilesizeplusminimumefforttogenerateandinterpret,andmaximumflexibilityforahumanreaderoreditorofthemetafile.ThispartofISO/IEC8632describestheformatusinganabstractsyntax.TheremainingpartsofISO8632specifystandardizedencodingsthatconformtothissyntax:ISO/IEC8632-3specifiesabinaryencoding;ISO/IEC8632-4specifiesacleartextencoding.
【中国标准分类号】:L81
【国际标准分类号】:35_140
【页数】:449P.;A4
【正文语种】:英语
【原文标准名称】:信息技术计算机图形存储和传送图片描述信息的元文卷第1部分:功能规范
【标准号】:ISO/IEC8632-1-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:功能描述;储存;计算机制图;图象描述信息;信息处理;间位存储器;交换;信息技术;规范
【英文主题词】:Computergraphics;Exchange;Functionaldescriptions;Imagefiles;Informationprocessing;Informationtechnology;Picturedescriptioninformation;Specification;Storage
【摘要】:ISO/IEC8632providesafileformatsuitableforthestorageandretrievalofpicturedescriptioninformation.Thefileformatconsistsofanorderedsetofelementsthatmaybeusedtodescribepicturesinawaythatiscompatiblebetweensystemsofdifferentarchitectures,compatiblewithdevicesofdifferingcapabilitiesanddesign,andmeaningfultoapplicationconstituencies.Thispicturedescriptionincludesthecapabilityfordescribingstaticimages.Theelementsspecifiedprovidefortherepresentationofawiderangeofpicturesonawiderangeofgraphicaldevices.Theelementsareorganizedintogroupsthatdelimitmajorstructures(metafiles,pictures,andapplicationstructures),thatspecifytherepresentationsusedwithinthemetafile,thatcontrolthedisplayofthepicture,thatperformbasicdrawingactions,thatcontroltheattributesofthebasicdrawingactions,thatallowapplication-specificstructuringtobeoverlaidonthegraphicalcontent,andthatprovideaccesstonon-standarddevicecapabilities.Themetafileisdefinedinsuchawaythat,inadditiontosequentialaccesstothewholemetafile,randomaccesstoindividualpicturesandindividualcontext-independentapplicationstructuresiswell-defined.Applicationswhichrequirerandomaccesstopicturesand/orcontext-independentapplicationstructureswithinpicturesmay,withinthemetafile,definedirectoriestothesepicturesand/orcontext-independentapplicationstructures.Themetafilemaythenbeopenedandrandomlyaccessedwithoutinterpretingtheentiremetafile.Inadditiontoafunctionalspecification,twostandardencodingsofthemetafilesyntaxarespecified.Theseencodingsaddresstheneedsofapplicationsthatrequiresmallmetafilesizeplusminimumefforttogenerateandinterpret,andmaximumflexibilityforahumanreaderoreditorofthemetafile.ThispartofISO/IEC8632describestheformatusinganabstractsyntax.TheremainingpartsofISO8632specifystandardizedencodingsthatconformtothissyntax:ISO/IEC8632-3specifiesabinaryencoding;ISO/IEC8632-4specifiesacleartextencoding.
【中国标准分类号】:L81
【国际标准分类号】:35_140
【页数】:449P.;A4
【正文语种】:英语
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