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JISC Digitisation Programme Meeting Metadata Seminar 08 October 2007. Content Packaging for Complex Objects The METS Model Hervé L’Hours UK Data Archive. Content Packaging: The Alternatives. Resource aggregation
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JISC Digitisation Programme MeetingMetadata Seminar08 October 2007 Content Packaging for Complex Objects The METS Model Hervé L’Hours UK Data Archive herve@essex.ac.uk
Content Packaging: The Alternatives Resource aggregation “The process of gathering together resources; the results can be used in one or more applications, such as transmission, storage, and delivery to users” • Dublin Core Abstract Model • MPEG-21 DIDL • IMS-CP herve@essex.ac.uk
Content Packaging: interoperability RAMLET IEEE Resource Aggregation Model for Learning, Education and Training • METS: mapping complete • IMS Content Packaging: mapping complete • Work on MPEG 21 DID almost done • Work on human readable description started herve@essex.ac.uk
optional METS Header optional optional optional Descriptive metadata Administrative metadata Behavioral metadata required optional File Inventory Structure map The METS Model: Overview herve@essex.ac.uk
The METS Model Header METS document: administrative metadata • Author/agent & agent role • Alternate identifiers for METS document • Creation and update dates and times • Status Behaviours • “Linking behavior definitions and program code with digital content and with associated descriptive and administrative metadata” herve@essex.ac.uk
METS: a simple diagram herve@essex.ac.uk
Descriptive Metadata herve@essex.ac.uk
Descriptive Metadata It’s easier with maps Descriptions for: Collection, object, file, sub file • Dublin Core • MODS • MARC 21 (MARC XML) Mappings: • DC Simple to MODS • MARC to MODS • MODS to MARC herve@essex.ac.uk
Descriptive Metadata Simple Dublin Core to MODS herve@essex.ac.uk
Descriptive Metadata MODS to MARC21 herve@essex.ac.uk
Descriptive Metadata Available transformations • MARCXML to MODS • MODS to MARCXML • Dublin Core to MODS • MODS to Dublin Core • MODS Version 2.0 to MODS Version 3.0 • MODS 3.0 to simple HTML display herve@essex.ac.uk
Administrative Metadata herve@essex.ac.uk
Technical Metadata herve@essex.ac.uk
Technical Metadata MIX: technical metadata for still images in XML • Derived from NISO Z39.87 • Technical Settings • Image creation: technology & processes herve@essex.ac.uk
Technical Metadata: MIX !-- NISO Section 6 --> <BasicDigitalObjectInformation> • Identifiers, Formats, Compression, Checksums !-- NISO Section 7 --> <BasicImageInformation> • Height, Width, photometric interpretation, color space <!-- NISO Section 8 --> <ImageCaptureMetadata> • Source dimensions, scanner/camera settings & software, gps <!-- NISO Section 9 --> <ImageAssessmentMetadata> • Bits per sample, color encoding etc etc herve@essex.ac.uk
Technical Metadata: MIX <!-- NISO Section 10 --> <ChangeHistory> <ImageProcessing> <dateTimeProcessed>2006-09-11</dateTimeProcessed> <sourceData/> <processingAgency/> <processingRationale/> <ProcessingSoftware> <processingSoftwareName/> <processingSoftwareVersion/> <processingOperatingSystemName/> <processingOperatingSystemVersion/> </ProcessingSoftware> <processingActions/> </ImageProcessing> <PreviousImageMetadata> <mix/> <mix/> <imageDate/> </PreviousImageMetadata> </ChangeHistory> </mix> herve@essex.ac.uk
Technical Metadata: Tiff headers Filename : 0558.tif Main Information NewSubFileType : 0 ImageWidth : 3182 ImageHeight : 4251 BitsPerSample : 8 Compression : Uncompressed PhotometicInterpretation : BW(BlackIsZero) FillOrder : 1 ImageDescription : Pixel Translations Inc., PIXTIFF Version 1.135 Make : techsoft as - P.O.BOX 132, N-3201 Sandefjord,NORWAY StripOffset : 882 Orientation : left-hand side SamplesPerPixel : 1 RowsPerStrip : 4251 StripByteCounts : 13526682 XResolution : 300/1 YResolution : 300/1 ResolutionUnit : Inch Software : PixEdit Version 7.3.7.0, SN 357-60253-02, Trans Media Technology used by default DateTime : 2007:06:04 14:42:29 Unknown (882C)4,1 : 470 herve@essex.ac.uk
Technical Metadata: text files textMD • Text generation: analogue-to-digital or born digital. • hardware platform • computer type and scanner used for OCR. • software used in producing text • OCR, word processing, text editor, etc. • The character set employed by the text. • How line breaks are represented • carriage return, or carriage return/line feed. • Language(s) used • Markup language employed • Any hardware or software requirements for viewing • General Note herve@essex.ac.uk
Technical Metadata PREMIS Preservation Metadata • PREMIS container [PREMIS-v1-1.xsd] • Object entity [Object-v1-1.xsd] • Event entity [Event-v1-1.xsd] • Agent entity [Agent-v1-1.xsd] • Rights entity [Rights-v1-1.xsd] herve@essex.ac.uk
Technical Metadata PREMIS in METS • Object.xsd under techMD • Event.xsd under digiProvMD • Rights.xsd under rightsMD • Agent.xsd under either • digiProvMD (event context) or • rightsMD (permission context) herve@essex.ac.uk
METS: a simple diagram herve@essex.ac.uk
Technical Metadata METSRights • Rights Declaration • Rights Holders • Context: • "ACADEMIC USER", "GENERAL PUBLIC", "REPOSITORY MGR", "MANAGED GRP", "INSTITUTIONAL AFFILIATE","OTHER" • Permissions: • "DISCOVER", "DISPLAY", "COPY", "DUPLICATE", "MODIFY", "DELETE", "PRINT", "OTHER", and "OTHERPERMITTYPE" • Constraints: • "ConstraintDescription" • "QUALITY", "FORMAT", "UNIT", "WATERMARK", "PAYMENT", "COUNT", "ATTRIBUTION", "RE-USE", "TIME", "TRANSFERPERMISSIONS", "OTHER” herve@essex.ac.uk
Source Metadata herve@essex.ac.uk
Source Metadata Legacy Information • Shelf locations • Versions • Negative with optical soundtrack • Positive with a magnetic soundtrack • Video • Multiple prints of a film • Previous digital generation herve@essex.ac.uk
Digital Provenance herve@essex.ac.uk
Digital Provenance DigiProv Metadata The Library of Congress Audio-Visual Prototyping Project • Process.78rpm to DAT conversion • Task. Child of process. • Task 1: Copy from 78 rpm disc to DAT tape • Task 2: Make files from DAT tape. • Tools. Child of task • Turntable, Phono Cartridge, Phono Pre-amp, A-to-D Converter, DAW (digital audio workstation), etc. • Settings. Child of tools. • Phono Pre-amp set to the Standard RIAA equalization for LPs. herve@essex.ac.uk
File Section herve@essex.ac.uk
Structural Maps herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together herve@essex.ac.uk
Linking it all together Interoperability herve@essex.ac.uk
JISC Digitisation Programme MeetingMetadata Seminar08 October 2007 Content Packaging for Complex Objects The METS Model Hervé L’Hours UK Data Archive herve@essex.ac.uk