Focus stacking module implementation

[waridrox]

The idea

Focus stacking (also known as focal plane merging and z-stacking or focus blending) is a digital image processing technique which combines multiple images taken at different focus distances to give a resulting image with a greater depth of field (DOF) than any of the individual source images.Focus stacking can be used in any situation where individual images have a very shallow depth of field; macro photography and optical microscopy are two typical examples. Focus stacking can also be useful in landscape photography. Source wiki

Sample 1

Sample 2

Possible way of implementation

CC: @jywarren

I guess, one way to think about is:
a module which analyzes the sharpness of each pixel and replaces any
"blurry" pixel with an alpha transparent pixel.
we could then repeatedly import images (i.e. import-image module followed
by "overlay-sharpest" module, or something like that) and they'd "knock
out" blurry areas with higher contrast or higher sharpness data. The order
of operations might need tweaking.

I could imagine other ways to do this too, but that seems like a relatively
simple one.

Another idea would be a module which imports a video clip and makes each
frame available to requests from later modules. That would be a little wild
as a module, and maybe would be a separate project.

[jywarren]

i love this it'd be so cool!!!

…

On Thu, Mar 25, 2021 at 3:45 PM Mohammad Warid ***@***.***> wrote: The idea Focus stacking (also known as focal plane merging and z-stacking or focus blending) is a digital image processing technique which combines multiple images taken at different focus distances to give a resulting image with a greater depth of field (DOF) than any of the individual source images.Focus stacking can be used in any situation where individual images have a very shallow depth of field; macro photography and optical microscopy are two typical examples. Focus stacking can also be useful in landscape photography. *Source wiki <https://en.wikipedia.org/wiki/Focus_stacking>* *Sample 1* [image: Screenshot 2021-03-26 at 12 52 06 AM] <https://user-images.githubusercontent.com/58583793/112533238-bf2bd680-8dcf-11eb-8dc7-8cb6b33a2485.png> *Sample 2* [image: Focus Stacking] <https://user-images.githubusercontent.com/58583793/112533377-e2568600-8dcf-11eb-9ed9-07f362fe85e9.jpg> Possible way of implementation *CC: @jywarren <https://github.com/jywarren>* I guess, one way to think about is: a module which analyzes the sharpness of each pixel and replaces any "blurry" pixel with an alpha transparent pixel. we could then repeatedly import images (i.e. import-image module followed by "overlay-sharpest" module, or something like that) and they'd "knock out" blurry areas with higher contrast or higher sharpness data. The order of operations might need tweaking. I could imagine other ways to do this too, but that seems like a relatively simple one. Another idea would be a module which imports a video clip and makes each frame available to requests from later modules. That would be a little wild as a module, and maybe would be a separate project. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1859>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAF6J6S5UUG4TMJBIR4NRLTFOHGTANCNFSM4Z2AIO3A> .