https://bugs.kde.org/show_bug.cgi?id=417431
caulier.gil...@gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|UPSTREAM |---
Summary|Incomplete display of EXIF |No metadata are displayed
|data for Canon EOS M6 Mark |from non supported Exiv2
|II |file formats
Status|RESOLVED |REOPENED
Ever confirmed|0 |1
--- Comment #4 from caulier.gil...@gmail.com ---
I reopen this file to be a more generic issues.
The solution to be able to handle metadata from non supported Exiv2 files
format will be to use ImageMagick identify.
I found a way with ImageMagick to extract all recognized metadata from image.
For FITS image (not supported by Exiv2) this give something like that:
[gilles@localhost FITS]$ identify -format '%[*:*]' ngc6543_optical_B.fits
date:create=2021-04-02T08:19:47+00:00
date:modify=2021-04-02T08:19:10+00:00
fits:bitpix=16 / number of bits per data pixel
fits:bscale=1 / default scaling factor
fits:bzero=32768 / offset data range to that of unsigned short
fits:cd1_1=4.44707382411E-06 / Degrees / Pixel
fits:cd1_2=-3.14322677056E-06 / Degrees / Pixel
fits:cd2_1=-3.14322677056E-06 / Degrees / Pixel
fits:cd2_2=-4.44707382411E-06 / Degrees / Pixel
fits:colorspc='Grayscale' / PCL: Color space
fits:comment=FITS module version 01.01.02.0288
fits:crpix1=2043.50292969 / Reference Pixel in X
fits:crpix2=1902.92858887 / Reference Pixel in Y
fits:crval1=269.640136719 / R.A. (degrees) of reference pixel
fits:crval2=66.6320571899 / Declination of reference pixel
fits:ctype1='RA---TAN' / Coordinate Type
fits:ctype2='DEC--TAN' / Coordinate Type
fits:equinox=2000. / Equinox of Ref. Coord.
fits:extend=T / FITS dataset may contain extensions
fits:history=PUTAST: Aug 8 11:25:45 2008 World Coordinate System parameters
written
fits:latpole=0. / Celestial latitude of native pole
fits:lonpole=180. / Native longitude of Celestial pole
fits:naxis=2 / number of data axes
fits:naxis1=3600 / length of data axis 1
fits:naxis2=3600 / length of data axis 2
fits:program='PixInsight 01.08.03.1123' / Software that created this HDU
fits:pv2_1=0. / Projection parameter 1
fits:resolutn=300. / PCL: Resolution in pixels per resolution unit
fits:resounit='inch ' / PCL: Resolution unit
fits:simple=T / file does conform to FITS standard
[gilles@localhost FITS]$
I think we will need a new DMetadata C++ wrapper based on ImageMagick API as
existing ones based on libheif and libraw...
In opposite of 'identify -verbose filename' which take age to give output as
histogram and color spaces are parsed, the 'identify -format '%[*:*]'
filename' way is very fast...
Gilles
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