https://bugs.kde.org/show_bug.cgi?id=425902

            Bug ID: 425902
           Summary: Add face region name in XMP metadata for HEIF files
           Product: digikam
           Version: 7.0.0
          Platform: Microsoft Windows
                OS: Microsoft Windows
            Status: REPORTED
          Severity: wishlist
          Priority: NOR
         Component: Metadata-Xmp
          Assignee: digikam-bugs-n...@kde.org
          Reporter: p...@paulandama.co.uk
  Target Milestone: ---

Currently, the metadata does not appear contain a region name for faces in HEIF
files. 

The closest that I can find is FaceID, which presumably relates to the ID of a
person within digikam's database, which is meaningless outside of Digikam. 

It would be great if the region name could also appear somewhere within the
metadata. 

For example:

<x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='Image::ExifTool 12.01'>
<rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'>

 <rdf:Description rdf:about=''
  xmlns:apple-fi='http://ns.apple.com/faceinfo/1.0/'
  xmlns:mwg-rs='http://www.metadataworkinggroup.com/schemas/regions/'
  xmlns:stArea='http://ns.adobe.com/xmp/sType/Area#'
  xmlns:stDim='http://ns.adobe.com/xap/1.0/sType/Dimensions#'>
  <mwg-rs:Regions rdf:parseType='Resource'>
   <mwg-rs:AppliedToDimensions rdf:parseType='Resource'>
    <stDim:h>3024</stDim:h>
    <stDim:unit>pixel</stDim:unit>
    <stDim:w>4032</stDim:w>
   </mwg-rs:AppliedToDimensions>
   <mwg-rs:RegionList>
    <rdf:Seq>
     <rdf:li rdf:parseType='Resource'>
      <mwg-rs:Area rdf:parseType='Resource'>
       <stArea:h>0.083000000000000018</stArea:h>
       <stArea:unit>normalized</stArea:unit>
       <stArea:w>0.061999999999999944</stArea:w>
       <stArea:x>0.58200000000000007</stArea:x>
       <stArea:y>0.24050000000000002</stArea:y>
      </mwg-rs:Area>
      <mwg-rs:Extensions rdf:parseType='Resource'>
       <apple-fi:AngleInfoRoll>0</apple-fi:AngleInfoRoll>
       <apple-fi:AngleInfoYaw>0</apple-fi:AngleInfoYaw>
       <apple-fi:ConfidenceLevel>591</apple-fi:ConfidenceLevel>
       <apple-fi:FaceID>1</apple-fi:FaceID>
       <apple-fi:Timestamp>13460641474736</apple-fi:Timestamp>
      </mwg-rs:Extensions>
      <mwg-rs:Type>Face</mwg-rs:Type>
     </rdf:li>
    </rdf:Seq>
   </mwg-rs:RegionList>
  </mwg-rs:Regions>
 </rdf:Description>

 <rdf:Description rdf:about=''
  xmlns:photoshop='http://ns.adobe.com/photoshop/1.0/'>
  <photoshop:Source>2019-07-25 15-26-26</photoshop:Source>
 </rdf:Description>
</rdf:RDF>
</x:xmpmeta>

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