color artifacts

Bug #1553342 reported by Alexander Rabtchevich
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Hugin
Expired
Undecided
Unassigned

Bug Description

Hello

Hugin 2016.rc1 produces color artifacts at some panoramas. Input files are 16-bit tiffs from darktable. The same crop from initial file and the resulting panorama is attached. If required, I can upload the whole set.

Revision history for this message
Alexander Rabtchevich (alexander-v-rabtchevich-gmx) wrote :
Revision history for this message
Alexander Rabtchevich (alexander-v-rabtchevich-gmx) wrote :

When I decreased exposure of several other images from the panorama in darktable by 0.3 EV, reexported and assembled the panorama from the beginning, the artifacts have gone. So I guess they are introduced in hugin at brightness changing.

Revision history for this message
tmodes (tmodes) wrote :

I assume the main cause is the the response curve. For such low contrast images it is difficult to find the correct response curve.
Reset the response curve and do a manual photometric optimization without response curve. This should yield to better results.
If this does not help we need more information (smallest project file which shows this bug with the images, ideally a project with only 2 small images).

Changed in hugin:
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for Hugin because there has been no activity for 60 days.]

Changed in hugin:
status: Incomplete → Expired
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