Hi, I have two tiff images, of which the first one is a GeoTIFF image and the second is a tiff image created from the first one by opening it with pyvips in Python, modifying it (blurring it) and saving it as a new file (so I don't know whether the second image counts as a GeoTIFF file). However, the second image lacks a lot of metadata that exists in the first image which I need, such as the coordinate system and corner coordinates.
How can I read this metadata from the first file with GDAL (in Python, although I guess the C++ API is pretty similar)? I have already tried loading the file as a GDAL dataset using gdal.Open <https://gdal.org/python/osgeo.gdal-module.html> and reading the data with the GetMetadata <https://www.gdal.org/classGDALMajorObject.html#a8ce3bf5795bbebfe9bc643e2152bb360> method, and I have looked in the domains <https://www.gdal.org/gdal_datamodel.html> 'SUBDATASETS', 'IMAGE_STRUCTURE', 'RPC', 'IMAGERY' as well as the default domain, but none of those contain the information about the coordinate system or the coordinates. There are supposedly also xml: domains, and I'm wondering whether the data I'm looking for may be under an xml domain, but I don't know what the name of that domain would be, and I can't find any way to list available domains (is there any? Because that would be great). So, how can I read the metadata specifying the coordinate system and corner coordinates from the first file and write it to the other? If I can read it with GetMetadata, I suppose I will also be able to write it with SetMetadata <https://www.gdal.org/classGDALMajorObject.html#a61ab7226d95b20e3e1f42461a1f62906> (I was able to do that for the domains listed above). I have also tried to transfer the information by reading it with the command line tool gdalinfo and writing it with gdal_translate, but that fails as 1) I don't know how to write all the relevant metadata with gdal_translate and 2) the metadata that I try to write isn't successfully written as the coordinate system information – which looks to be JSON-formatted – ends up with a different JSON-tag in the root element and with some elements missing. Regards Kristofer -- Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev