Hi BugBear,
paul womack wrote on 06.10.16 10:22:
I often find my self performing pre-processing on
images for Hugin (e.g. combining stacked image with enfuse).
This has the unfortunate effect of dropping all the IPTC
data (depending of which tool I use, netpbm, imagemagick, enfuse, etc),
which means that orientation and exposure data is lost, making
Hugin less convenient.
To avoid this, I could use exiftool to transfer IPTC data from one of
the source
images to the output image of my preprocessing, in the same
way that Hugin itself does.
What (IPTC) fields do I need to transfer to get the
best behaviour from Hugin?
I think IPTC tries to describe the visual content and provide
information about creator and copyright, see
https://iptc.org/standards/photo-metadata/photo-metadata/
To my understanding the type of information you want to preserve is
usually stored in (and read from) the EXIF metadata fields. However IPTC
and EXIF seem to use some compatible fields, so maybe you'll just need
to adapt your workflow to convert or copy these fields (see below) from
IPTC to EXIF.
My workflow regarding metadata (and a proper file name to begin with)
uses exiftool (try these commands with copies of your images first, they
work for me on Mac OS X)
- rename files using exiftool to get rid of the arbitrary 'img_1234.jpg'
naming scheme like this:
exiftool '-FileName<${CreateDate}_$filenumber.%e' -d
MyPrefix_%Y%m%d-%H%M%S%%-c /Users/youraccount/path/to/photodirectory
- include lon/lat/altitude data from my Garmin's gpx file. I usually use
a different tool on my Mac but this can also be done with exiftool like
this:
exiftool -geotag "/Users/carl/path/to/gpx-files/*.gpx"
/Users/youraccount/path/to/photodirectory
- this command will change the images' modify date but this can be
corrected with:
exiftool '-DateTimeOriginal>FileModifyDate'
/Users/youraccount/path/to/photodirectory
My raw image converter also includes these values with the tiffs that I
import in my Hugin projects. Hugin copies the EXIF values from the first
image into the stitched panorama.
So in one of my finished panoramas I find this EXIF information (amongst
other data):
Copyright : Carl von Einem
Date Created : 2016:08:07
Time Created : 15:06:16+00:00
Date/Time Created : 2016:08:07 15:06:16+00:00
GPS Altitude : 612.8 m Above Sea Level
GPS Latitude : 47 deg 45' 55.13" N
GPS Longitude : 11 deg 9' 52.39" E
GPS Position : 47 deg 45' 55.13" N, 11 deg 9' 52.39" E
Hope that helps,
Carl
--
A list of frequently asked questions is available at:
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