PanoTools NG:
Automating depth of field reduction - Aligning a stack of slightly different points of view
Antonin Roussel antonin.roussel@... 2020-Mar-19 10:55:15
Hello,
I "discovered" a way to give a macrophoto look'n'feel to monument
building pictures, but I feel my process to be time consuming. I wonder :
- if it is possible to improve Hugin usage in this concern, or
- if another software would be more accurate, or
- if Hugin python scripting can help, or
- ... any comment ?
Process :
I'm taking photos of a monument, about 50-100 from a set of slightly
different points of view (all spread within a 30cm side square). I want
to align all those photos on a tiny set of points, from 1 up to 3. These
points are the same on every pair of photos. These points are expected
to be on resulting picture focal plane. Once aligned, the set of photos
is exported as a set of Remapped Images, and then dropped in Siril for
sum stacking. Gimp can import the three color channels of the resulting
file_stacked.fit and displays the monument in a macrophoto look'n'feel.
Settings :
In order to automate the Control Points Creation as expected, around
expected focal plane, I use the same Crop Mask on every photos before
launching creation. Once done, restore default cropping (none)
In order to limit the number of Control Points, I use the following
customized Control Point Detector Program command `cpfind --linearmatch
--sieve2width 2 --sieve2height 2 -o %o %s`
Problems are multiple :
- if points of view are too different (centered differently), Crop
Masks need to be individually adjusted
- automated control points are obviously not the same, randomly not
close enough
Wishes :
- get a way to generate all control points from the ones manually set
in the first pair of photos.
Idea :
- once a pair of photos is aligned, close Hugin. Edit file.pto in a
text editor to spread first pair of photos Control Points to every
following pair. Then open this modified file.pto and run "Edit > Fine
tune all Points". Not yet tested.
NB :
Siril (https://www.siril.org/) can align photos, but as it is made for
astronomers, it is looking for stars and seems not able to align
building pictures.
Thank you for your attention.
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Posted by: Antonin Roussel <#removed#>
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