Different photometric results with GUI and AutoOptimiser -m

[Stéphane Péneau]

Hello,

I'd like to create pano for about 2000 sets (6 pictures from 6 identical
action cam for each set). I'm trying to script the stitching process,
but there is (at least) one thing I don't understand.

GUI : If I use "Low dynamic range, variable white balance", the result is ok

If I use the same .pto file and launch :

sed -i
'/#hugin_optimizerPhotoMasterSwitch/c\#hugin_optimizerPhotoMasterSwitch
23' default4.pto
"${autooptimiser}" -m -o default5.pto default4.pto

I sometime have a lot of posterization on one part of the pano.

I thinked that these two methods should have the same result. Am I wrong ?

how to get rid of this problem within a script ?


(pto before photometric optimisation attached)


Best,


Stéphane

[T. Modes]

Hi Stéphane,

stephane schrieb am Dienstag, 14. Dezember 2021 um 22:36:01 UTC+1:

I sometime have a lot of posterization on one part of the pano.

The main problem is that you assigned an individual response curve to each images. Optimizing so many response curves has a high risk of going hay wire - there are too many free parameter. Better use the same response curve for all images.

Thomas

[Stéphane Péneau]

Hi Thomas,

I understand.

I'm trying to find a better workflow. Manually I usually find a good solution, but it's much more difficult with batch processing, I have many different conditions (indoor, outdoor...).

Thank you for your help

Stéphane

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[Stéphane Péneau]

Hi!

I have reduced the free parameters number with fixed response curve, and it works better. My current script is this one:

https://github.com/Stefal/Stitching_scripts/blob/49f82cc2687e4b03d85d13c102d0d6d99f3346f0/autostitch.sh#L15-L29

Sometime I have a white "halo" on the pano (see the left side of the attached example), I don't know if there is a way to fix this without breaking something else.

It's still a pretty good result for stitching thousands of pano.

I have a request, but I will start a new thread.

Best,

Stéphane

To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/bf73c960-ba7f-82fc-7a4d-1d14cbaa4f1a%40wanadoo.fr.