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Is there any way to save storage on similar images? (lemmy.pe1uca.dev)

submitted 2 years ago by pe1uca@lemmy.pe1uca.dev to c/selfhosted@lemmy.world

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So, I'm selfhosting immich, the issue is we tend to take a lot of pictures of the same scene/thing to later pick the best, and well, we can have 5~10 photos which are basically duplicates but not quite.
Some duplicate finding programs put those images at 95% or more similarity.

I'm wondering if there's any way, probably at file system level, for the same images to be compressed together.
Maybe deduplication?
Have any of you guys handled a similar situation?

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[–] cizra@lemm.ee 8 points 2 years ago (1 children)

Highly unlikely to succeed. The tiny differences are spread out all over the image.

[–] ptz@dubvee.org 3 points 2 years ago* (last edited 2 years ago)

That's what I was thinking, but wasn't sure enough to say beyond "give it a shot and see".

There might be some savings to be had by enabling compression, though it would depend on what format the images are in to start with. If they're already in a compressed format, it would probably just be a waste of CPU to try compressing them further at the filesystem level.