JPSearch RA

JPSearch Part 5: Data interchange format between image repositories

The flexibility within the metadata life cycle process is improved by embedding the metadata into the image raw data file format as specified in JPSearch Part-4. However, the interchange of image data between JPSearch compliant systems remains an open issue. Reasons for such a need are manifold: consolidation of metadata generated on different systems, transferring data between system boundaries or synchronization of metadata and/or image data between repositories (e.g., between private and business platforms). For this purpose, Part 5 of ISO/IEC 24800 provides a data interchange format for the exchange of image collections and respective metadata between JPSearch compliant repositories.

The JPSearch data interchange format enables to easily and faithfully transfer data between different hardware and software system. In particular, it supports functions such as:

Exchanging data between JPSearch repositories on different devices and platforms.
Consolidating metadata generated on different systems.
Transferring data to a newer and better system.
Consolidating selected data to a centralized repository.
Archiving data in a format which will survive current products.

In order to support these functions, Part 5 of ISO/IEC 24800 specifies two XML schemas, the JPSearch XML metadata interchange format schema, which acts as a container for metadata exchange in image repositories, and the JPSearch collection metadata schema, which allows exchanging collection metadata. Both schemas are introduced in the next sections.

JPSearch XML metadata interchange format schema

The JPSearch XML metadata interchange format schema specifies the schema that facilitates the interchange of XML metadata descriptions about images and collections. The ImageRepository element serves as the root element of the XML metadata interchange format schema. An example for the ImageRepository element is provided below:

<?xml version="1.0" encoding="iso-8859-1"?>
<ImageRepository xmlns="urn:jpeg:jpsearch:jpxif:2009" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpcs="urn:jpeg:jpsearch:schema:coremetadata:2009" xmlns:jpcls="urn:jpeg:jpsearch:schema:collections:2009" xsi:schemaLocation="urn:jpeg:jpsearch:jpxif:2009 24800-5-repository.xsd urn:jpeg:jpsearch:schema:coremetadata:2009 24800-2-core.xsd urn:jpeg:jpsearch:schema:collections:2009 24800-5-collections.xsd">
 <Image>
  <ImageData>
   <MediaUri>uncleben.jpg</MediaUri>
  </ImageData>
  <ImageMetadata>
   <JPSearchImageDescription>
    <jpcs:Identifier>uncleben</jpcs:Identifier>
    <jpcs:Creators>
     <jpcs:GivenName>Tester</jpcs:GivenName>
    </jpcs:Creators>
    <jpcs:CreationDate>2010-07-16T10:32:52</jpcs:CreationDate>
    <jpcs:ModifiedDate>2010-07-16T10:32:52</jpcs:ModifiedDate>
    <jpcs:Description>Image number 1</jpcs:Description>
    <jpcs:CollectionLabel>Family</jpcs:CollectionLabel>
    <jpcs:GPSPositioning latitude="12.0" longitude="12.0"/>
    <jpcs:RegionOfInterest>
     <jpcs:RegionLocator>
      <jpcs:Region dim="2">0 0 100 100</jpcs:Region>
     </jpcs:RegionLocator>
     <jpcs:ContentDescription/>
     <jpcs:ExternalDescription>
      <jpcs:TagName>aa</jpcs:TagName>
      <jpcs:LiteralValue>123412</jpcs:LiteralValue>
     </jpcs:ExternalDescription>
     <jpcs:ExternalDescription>
      <jpcs:TagName>aa</jpcs:TagName>
      <jpcs:StructuredValue fromNamespace="urn:mpeg:mpeg7:schema:2004" xmlns:mpeg7="urn:mpeg:mpeg7:schema:2004" xsi:schemaLocation="urn:mpeg:mpeg7:schema:2004 M7v2schema.xsd">
       <mpeg7:Mpeg7>
        <mpeg7:DescriptionUnit xsi:type="mpeg7:MediaIdentificationType">
         <mpeg7:EntityIdentifier/>
        </mpeg7:DescriptionUnit>
       </mpeg7:Mpeg7>
      </jpcs:StructuredValue>
     </jpcs:ExternalDescription>
    </jpcs:RegionOfInterest>
    <jpcs:Width>640</jpcs:Width>
    <jpcs:Height>480</jpcs:Height>
   </JPSearchImageDescription>
  </ImageMetadata>
 </Image>
 <Image>
  <ImageData>
   <MediaUri>chieko.jpg</MediaUri>
  </ImageData>
  <ImageMetadata>
   <JPSearchImageDescription>
    <jpcs:Identifier>chieko</jpcs:Identifier>
    <jpcs:Creators>
     <jpcs:GivenName>Tester</jpcs:GivenName>
    </jpcs:Creators>
    <jpcs:CreationDate>2011-07-16T10:32:52</jpcs:CreationDate>
    <jpcs:ModifiedDate>2011-07-16T10:32:52</jpcs:ModifiedDate>
    <jpcs:Description>Image number 1</jpcs:Description>
    <jpcs:CollectionLabel>Family</jpcs:CollectionLabel>
    <jpcs:GPSPositioning latitude="12.0" longitude="12.0"/>
    <jpcs:RegionOfInterest>
     <jpcs:RegionLocator>
      <jpcs:Region dim="2">0 0 100 100</jpcs:Region>
     </jpcs:RegionLocator>
     <jpcs:ContentDescription/>
     <jpcs:ExternalDescription>
      <jpcs:TagName>aa</jpcs:TagName>
      <jpcs:LiteralValue>123412</jpcs:LiteralValue>
     </jpcs:ExternalDescription>
     <jpcs:ExternalDescription>
      <jpcs:TagName>aa</jpcs:TagName>
      <jpcs:StructuredValue fromNamespace="urn:mpeg:mpeg7:schema:2004" xmlns:mpeg7="urn:mpeg:mpeg7:schema:2004">
       <mpeg7:Mpeg7>
        <mpeg7:DescriptionUnit xsi:type="mpeg7:MediaIdentificationType">
         <mpeg7:EntityIdentifier/>
        </mpeg7:DescriptionUnit>
       </mpeg7:Mpeg7>
      </jpcs:StructuredValue>
     </jpcs:ExternalDescription>
    </jpcs:RegionOfInterest>
    <jpcs:Width>640</jpcs:Width>
    <jpcs:Height>480</jpcs:Height>
   </JPSearchImageDescription>
  </ImageMetadata>
 </Image>
</ImageRepository>

JPSearch collection metadata schema

The JPSearch collection metadata schema specifies the schema that facilitates the composition of XML metadata descriptions about image collections, for the purpose of information exchange between image repositories. An example is provided below:

<?xml version="1.0" encoding="iso-8859-1"?>
<Collections xmlns="urn:jpeg:jpsearch:schema:collections:2009" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpcs="urn:jpeg:jpsearch:schema:coremetadata:2009" xsi:schemaLocation="urn:jpeg:jpsearch:schema:coremetadata:2009 24800-2-core.xsd urn:jpeg:jpsearch:schema:collections:2009 24800-5-collections.xsd" xsi:type="CollectionsType">
 <Collection>
  <Identifier>Col1</Identifier>
  <CreationDate>2009-07-16T10:32:52</CreationDate>
  <ModifiedDate>2009-07-16T10:32:52</ModifiedDate>
  <Description>The collection number 1</Description>
  <WithinCollectionID>Col2</WithinCollectionID>
  <WithinCollectionID>Col3</WithinCollectionID>
 </Collection>
 <Collection>
  <Identifier>Col2</Identifier>
  <CreationDate>2009-07-16T10:32:52</CreationDate>
  <ModifiedDate>2009-07-16T10:32:52</ModifiedDate>
  <Description>The collection number 2</Description>
 </Collection>
 <Collection>
  <Identifier>Col3</Identifier>
  <CreationDate>2009-07-16T10:32:52</CreationDate>
  <ModifiedDate>2009-07-16T10:32:52</ModifiedDate>
  <Description>The collection number 3</Description>
 </Collection>
</Collections>