Thomas reminded me that Hugin already has a method for adding
control-points to pre-aligned panoramas, something that is regularly
requested here.
i.e. you can load photos, approximately line them up by dragging
them around in the preview, and run a control-point detection that
only tries to match photos that overlap in the preview.
This is also the ideal way of stitching from a template. If you
always shoot the same arrangement, you can save this layout as a
template, then for each new project load the template, and only
match the pairs of photos that you know need matching.
Another technique would be script creation of the template, e.g. if
you have a complex layout, or shoot with a robotic head that has
logging you can then control the whole process.
To do this you need to add a New Control Point Detector in File ->
Preferences, call it something like 'Prealigned CPFind'. With the
Type set to 'Prealigned panorama', set Detector to 'One step
detector', Program to 'cpfind', Arguments to '-o %o %s', and make
sure the Advanced option is set to 'Only work on image pairs without
control points'.
Choose this whenever you do feature matching and Hugin will only
match the photos you tell it to match.
Once you have this setup in the Hugin GUI, you can also use this
setting with the 'icpfind' command-line tool.
--
Bruno
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