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  <gmd:dateStamp>
    <gco:Date>2017-08-10</gco:Date>
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            <gco:CharacterString>DONNEES - Emprises des prises de vues aériennes dématérialisées de l'IGN - export Grand Est</gco:CharacterString>
          </gmd:title>
          <gmd:date>
            <gmd:CI_Date>
              <gmd:date>
                <gco:Date>2016-01-01</gco:Date>
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            <gmd:MD_Identifier>
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        <gco:CharacterString>Depuis les années 1920, l’IGN est à la pointe des techniques permettant d'acquérir et traiter les images aériennes. Chaque année, les avions de la flotte aérienne de l'IGN quadrillent le ciel de France pour assurer la couverture photographique d'une vingtaine de départements. Ces photographies ont de nombreuses applications à caractère historique, scientifique ou environnemental. L'acquisition numérique des prises de vue aériennes, initiée en 1999, a été généralisée depuis 2005.

                    Les prises de vue historiques sur support argentique depuis 1920 sont progressivement dématérialisées pour pouvoir être mises à disposition sous forme de fichiers numériques.

                    Les photos aériennes dématérialisées sont téléchargeables au format JPEG2000.</gco:CharacterString>
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      <gmd:pointOfContact>
        <gmd:CI_ResponsibleParty>
          <gmd:organisationName>
            <gco:CharacterString>IGN</gco:CharacterString>
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            <gmd:CI_Contact>
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                    <gco:CharacterString>contact@ign.fr</gco:CharacterString>
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              </gmd:address>
              <gmd:contactInstructions>
                <gmx:FileName src="http://www.datagrandest.fr/metadata/ref/Logo/Logo_IGN.jpg">Logo</gmx:FileName>
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            <gco:CharacterString>.png</gco:CharacterString>
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        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Grand Est</gco:CharacterString>
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            <gco:CharacterString>Ardennes (08)</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>Aube (10)</gco:CharacterString>
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            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Marne (51)</gco:CharacterString>
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        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Haute-Marne (52)</gco:CharacterString>
          </gmd:keyword>
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            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Meurthe-et-Moselle (54)</gco:CharacterString>
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            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Meuse (55)</gco:CharacterString>
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            <gco:CharacterString>Moselle (57)</gco:CharacterString>
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            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Vosges (88)</gco:CharacterString>
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          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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        <gmd:MD_Keywords>
          <gmd:keyword>
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      </gmd:resourceConstraints>
      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
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            <gmd:MD_RestrictionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#MD_RestrictionCode" codeListValue="copyright">copyright</gmd:MD_RestrictionCode>
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            <gmd:MD_RestrictionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
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            <gmd:MD_RestrictionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
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        <gmd:MD_SecurityConstraints>
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        <gmd:MD_Resolution>
          <gmd:equivalentScale>
            <gmd:MD_RepresentativeFraction>
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                  <gml:beginPosition>1920-01-01</gml:beginPosition>
                  <gml:endPosition>2005-01-01</gml:endPosition>
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      <gmd:extent>
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          <gmd:description>
            <gco:CharacterString>Grand Est</gco:CharacterString>
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                <gco:Decimal>8,2</gco:Decimal>
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              <gmd:southBoundLatitude>
                <gco:Decimal>47,4</gco:Decimal>
              </gmd:southBoundLatitude>
              <gmd:northBoundLatitude>
                <gco:Decimal>50,2</gco:Decimal>
              </gmd:northBoundLatitude>
            </gmd:EX_GeographicBoundingBox>
          </gmd:geographicElement>
        </gmd:EX_Extent>
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  </gmd:identificationInfo>
  <gmd:distributionInfo>
    <gmd:MD_Distribution>
      <gmd:distributionFormat>
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          <gmd:name>
            <gco:CharacterString>Shapefiles (shp)</gco:CharacterString>
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          <gmd:version>
            <gco:CharacterString>1.0</gco:CharacterString>
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          <gmd:specification>
            <gco:CharacterString>Fichier de formes ESRI</gco:CharacterString>
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        </gmd:MD_Format>
      </gmd:distributionFormat>
      <gmd:transferOptions>
        <gmd:MD_DigitalTransferOptions>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>https://www.datagrandest.fr/geoserver/ref/wms?SERVICE=WMS&amp;REQUEST=GetCapabilities</gmd:URL>
              </gmd:linkage>
              <gmd:protocol>
                <gco:CharacterString>OGC:WMS</gco:CharacterString>
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              <gmd:name>
                <gco:CharacterString>REF_PVA_GRANDEST_IGN_L93</gco:CharacterString>
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              <gmd:description>
                <gco:CharacterString>Emprises prises de vue aériennes dématérialisées de l'IGN extraction Grand Est</gco:CharacterString>
              </gmd:description>
            </gmd:CI_OnlineResource>
          </gmd:onLine>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>https://github.com/cquest/photos-aeriennes-ign/blob/master/README.md</gmd:URL>
              </gmd:linkage>
              <gmd:name>
                <gco:CharacterString>Github extraction clichés</gco:CharacterString>
              </gmd:name>
              <gmd:description>
                <gco:CharacterString>Ce projet contient des scripts d'extraction des données sur les photos aériennes anciennes disponibles sur le géoportail ainsi que les données extraites et remises en forme pour en faciliter la ré-utilisation.</gco:CharacterString>
              </gmd:description>
            </gmd:CI_OnlineResource>
          </gmd:onLine>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>http://www.data.gouv.fr/fr/datasets/prises-de-vue-aeriennes-dematerialisees-de-lign/</gmd:URL>
              </gmd:linkage>
              <gmd:name>
                <gco:CharacterString>data.gouv</gco:CharacterString>
              </gmd:name>
              <gmd:description>
                <gco:CharacterString>Prises de vue aériennes dématérialisées de l'IGN</gco:CharacterString>
              </gmd:description>
            </gmd:CI_OnlineResource>
          </gmd:onLine>
        </gmd:MD_DigitalTransferOptions>
      </gmd:transferOptions>
    </gmd:MD_Distribution>
  </gmd:distributionInfo>
  <gmd:dataQualityInfo>
    <gmd:DQ_DataQuality>
      <gmd:scope>
        <gmd:DQ_Scope>
          <gmd:level>
            <gmd:MD_ScopeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
          </gmd:level>
        </gmd:DQ_Scope>
      </gmd:scope>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:statement>
            <gco:CharacterString>Ces images aériennes sont librement réutilisables (voir http://professionnels.ign.fr/pva) conformément à la loi n°78-753 du 17 juillet 1978, y compris pour des usages commerciaux. Ces fichiers de métadonnées ont pour but de faciliter l'accès et la ré-utilisation de ce formidable patrimoine.
                            Métadonnées des missions (dans /data/missions/)

                            mission: identifiant de la mission
                            annee: année extraite de l'idta des clichés
                            date_debut: date de début (extrait des métadonnées des clichés)
                            date_fin: date de fin (extrait des métadonnées des clichés)
                            res: résolution des clichés de la mission (extrait de l'idta)
                            support: Ag pour argentique, Nu pour numérique
                            type: type de photo P=noir et blanc, C=couleur, IR=infrarouge, IRC=infrarouge couleur ? (extrait de l'idta)
                            nbcliches: nombre de clichés pris pour cette mission
                            surface: surface couvertue par la mission
                            somme_surface: somme des surfaces des clichés (avec recouvrement)
                            tx_recouvrement: taux de recouvrement des clichés
                            la géométrie correspond à l'emprise globale des clichés de la mission

                            Métadonnées des clichés (dans /data/pva/)

                            idcliche: identifiant du cliché (unique)
                            mission: identifiant de la mission
                            numcli: numéro du cliché
                            idta: composé de annee _ nom mission _ type de photo (type) _ numéro du cliché (numcli)
                            date: date de prise de vue (format ISO)... les dates au 1er janvier semble indiquer uniquement l'année
                            res: résolution (en échelle pour les photos argentiques, en cm/pixel pour les numériques)
                            support: Ag pour argentique, Nu pour numérique
                            type: type de photo P=noir et blanc, C=couleur, IR=infrarouge, IRC=infrarouge couleur ?
                            surface: couverture en km2 du cliché
                            lon: longitude du centroide de l'emprise
                            lat: latitude du centroide de l'emprise
                            orientation: orientation en degrés du cliché
                            url: nom du fichier JPEG2000 téléchargeable, peut être NULL si non téléchargeable
                            le polygone de la géométrie contenu dans le geojson correspond à celle de la couverture du cliché

                            https://github.com/cquest/photos-aeriennes-ign/blob/master/README.md</gco:CharacterString>
          </gmd:statement>
        </gmd:LI_Lineage>
      </gmd:lineage>
      <gmd:report>
        <gmd:DQ_DomainConsistency>
          <gmd:result>
            <gmd:DQ_ConformanceResult>
              <gmd:specification>
                <gmd:CI_Citation>
                  <gmd:date />
                </gmd:CI_Citation>
              </gmd:specification>
            </gmd:DQ_ConformanceResult>
          </gmd:result>
        </gmd:DQ_DomainConsistency>
      </gmd:report>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmd:MD_Metadata>

