The spec states clearly that the data window describes the area which has data,
which is how Hugin treats it. So switching data and display window as you
propose would clearly violate the spec. (Or Hugin would required to save a lot
of black pixels with no information but increased file size).
The behaviour of OpenEXR data window/display window is analogous how Hugin is
using cropped TIFF images.
Luminance HDR displays such a OpenEXR without problems (without black border).
If darktable shows only a black border on the left and top then it ignores the
display window and is using only the offset of the data window. Otherwise it
should also show a black border on the right and bottom.
** Changed in: hugin
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1865333
Title:
dataWindow and displayWindow look swapped in generated OpenEXR files
Status in Hugin:
Invalid
Bug description:
When exporting a high dynamic range image with a crop as an OpenEXR
file, the cropped dimensions end up as the dataWindow and the canvas
size as the displayWindow, which seems like it’s the wrong way around.
When imported back into darktable, the image has a black border on the
left and at the top.
Export settings: https://i.imgur.com/TFmA6zP.png (also attached)
exrheader output:
dataWindow (type box2i): (51 78) - (5292 3991)
displayWindow (type box2i): (0 0) - (5345 4070)
This happens on intermediary remapped files too, not just the final
merged output.
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