The geotiff produced by step 1 contains the XMP tags as expected.
But the warped geotiff produced by step 2 does not contain any XMP tags.
ah ok, gdalwarp indeed does not preserve the XMP information. I guess it
would be reasonable to do it. You may create an enhancement ticket on
the GDAL github issue tracker to suggest this.
Even
How best to provide a test jpg? The ones I have are all 20+ MBytes.
Thanks
Tom
--------------------------------------------------
Thomas C. O'Reilly
Monterey Bay Aquarium Research Institute
7700 Sandholdt Road
Moss Landing, California 95039-9644
831-775-1766 (voice)
831-775-1620 (FAX)
[email protected] (email)
http://www.mbari.org (World-wide Web)
"The machine does not isolate us from the great mysteries
of nature, but plunges us more deeply into them."
- ANTOINE DE SAINT-EXUPERY
"Wind, Sand, and Stars" (1939)
----- Original Message -----
From: "Even Rouault" <[email protected]>
To: "Tom O'Reilly" <[email protected]>, "gdal-dev" <[email protected]>
Sent: Monday, August 8, 2022 12:13:03 PM
Subject: Re: [gdal-dev] gdal_translate drops XMP exif tags
Tom,
It would be interesting if you could provide an image how to reproduce that
With the sample file from the autotest suite, I can't reproduce that:
$ gdal_translate ../autotest/gdrivers/data/jpeg/byte_with_xmp.jpg out.tif
$ gdalinfo out.tif -mdd all
Driver: GTiff/GeoTIFF
Files: out.tif
Size is 1, 1
Metadata (xml:XMP):
<?xpacket begin='' id='W5M0MpCehiHzreSzNTczkc9d'?>
<x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='Image::ExifTool 7.89'>
<rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
<rdf:Description rdf:about=''
xmlns:dc='http://purl.org/dc/elements/1.1/'>
<dc:description>
<rdf:Alt>
<rdf:li xml:lang='x-default'>Description</rdf:li>
</rdf:Alt>
</dc:description>
<dc:subject>
<rdf:Bag>
<rdf:li>XMP</rdf:li>
<rdf:li>Test</rdf:li>
</rdf:Bag>
</dc:subject>
<dc:title>
<rdf:Alt>
<rdf:li xml:lang='x-default'>Title</rdf:li>
</rdf:Alt>
</dc:title>
</rdf:Description>
<rdf:Description rdf:about=''
xmlns:tiff='http://ns.adobe.com/tiff/1.0/'>
<tiff:BitsPerSample>
<rdf:Seq>
<rdf:li>8</rdf:li>
</rdf:Seq>
</tiff:BitsPerSample>
<tiff:Compression>1</tiff:Compression>
<tiff:ImageLength>20</tiff:ImageLength>
<tiff:ImageWidth>20</tiff:ImageWidth>
<tiff:PhotometricInterpretation>1</tiff:PhotometricInterpretation>
<tiff:PlanarConfiguration>1</tiff:PlanarConfiguration>
<tiff:SamplesPerPixel>1</tiff:SamplesPerPixel>
</rdf:Description>
</rdf:RDF>
</x:xmpmeta>
<?xpacket end='w'?>
Metadata (DERIVED_SUBDATASETS):
DERIVED_SUBDATASET_1_NAME=DERIVED_SUBDATASET:LOGAMPLITUDE:out.tif
DERIVED_SUBDATASET_1_DESC=log10 of amplitude of input bands from out.tif
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 1.0)
Upper Right ( 1.0, 0.0)
Lower Right ( 1.0, 1.0)
Center ( 0.5, 0.5)
Band 1 Block=1x1 Type=Byte, ColorInterp=Gray
Le 08/08/2022 à 20:32, Tom O'Reilly a écrit :
gdal_translate output .tif file does not contain XMP tags that were
present in the input .jpg file.
The output file contains many of the input EXIF tags, aggregated as
the GDALMetadata tag, but not the XMP tags.
Why does gdal_translate remove XMP tags - is there an option to
preserve them?
Thanks
Tom
--------------------------------------------------
Thomas C. O'Reilly
Monterey Bay Aquarium Research Institute
7700 Sandholdt Road
Moss Landing, California 95039-9644
831-775-1766 (voice)
831-775-1620 (FAX)
[email protected] (email)
http://www.mbari.org (World-wide Web)
"The machine does not isolate us from the great mysteries
of nature, but plunges us more deeply into them."
- ANTOINE DE SAINT-EXUPERY
"Wind, Sand, and Stars" (1939)
_______________________________________________
gdal-dev mailing list
[email protected]
https://lists.osgeo.org/mailman/listinfo/gdal-dev
--
http://www.spatialys.com
My software is free, but my time generally not.
_______________________________________________
gdal-dev mailing list
[email protected]
https://lists.osgeo.org/mailman/listinfo/gdal-dev
