foto
(Syv)
September 26, 2022, 2:58pm
1
G’Mic newbie here.
I have a set of images, a timelapse, that spans a couple of hours.
I’ve been using imagemagick to slice the images and put them back into 1 image.
The problem, that I have, is that it assembles as slices
I’d like to have smooth transitions between each slice.
I am looking at G’MIC and the slice command it says:
slices
Arguments:
z0[%],_z1[%]
Description:
Keep only specified slices of selected images.
what is z0? what is _z1?
how do I assemble?
can I make a “smooth” merging of the slices?
Thanks
2 Likes
In G’MIC, the word slice is used in the context of 3D volumetric images, i.e. where an image has a width (size along the x -axis), a height (size along the y -axis) and a depth (size along the z -axis).
In that case, a slice J correspond to the 2D image defined by J(x,y) = I(x,y,z) , where z is the slice number (going from 0 to depth - 1 ).
So, that’s completely different from what you are looking for.
foto
(Syv)
September 26, 2022, 4:49pm
3
Can you point me in the direction to create slices and reassemble them?
Thanks
Use split x,16
, where 16 is the number of blocs you want at the end.
$ gmic sp lena split x,16
Then, to reassemble:
$ gmic sp lena split x,16 append x
foto
(Syv)
September 26, 2022, 5:55pm
5
Thank you for taking the time to help me.
Tobias
(Tobias)
September 27, 2022, 7:46am
6
Perhaps you should look at enblend for the transitions:
http://enblend.sourceforge.net/
Try using Hugin to smooth transitions betweeen slices
the Image ref is
slice the ref image using Imagemagick ( 4 vertical slices )
convert b.jpg -crop 4x1@ +repage output%02d.jpg
Then change EV for each slice using Darktable ( -2EV, - 1EV, 0.EV, +1EV)
Assemble the slices using Hugin
then use Hugin to smooth transition between slices
the result without any optimizations
foto
(Syv)
September 27, 2022, 1:54pm
8
Wow
This is will become my project for the end of the year (right now, we are moving).
Just a quick question, do the slices need some overlap?
Thank you very much
No, the slices don’t need some overlap