Asklemmy

51985 readers

491 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 6 years ago

MODERATORS

How concerned are you of watermarks in videos or images you share? (lemy.lol)

submitted 1 week ago by greenbelt@lemy.lol to c/asklemmy@lemmy.ml

4 comments fedilink hide all child comments

cross-posted from: https://lemy.lol/post/58212892

I think it is possible to embed invisible information into videos and images. This way peopple could track where you got an image from, the source from which you copied it, and people who copy your image to share it again. https://github.com/ShieldMnt/invisible-watermark

Services like youtube or twitter could embed such watermarks into content they serve to specific users without them knowing; Smartphone-cameras could mark images in secret.

I guess blurring, rotating or dithering the image could destroy watermarks. Or maybe just sharing a screenshot of an image instead of the original image. Format conversions may help too.

Keywords: digital-watermarking. tracking.

you are viewing a single comment's thread
view the rest of the comments

[–] Deme@sopuli.xyz 12 points 1 week ago

I'm not quite as concerned. Images don't report back by themselves like a link that has the sharing info appended to it does, so the platform (or a crawler reading that platform) would need to actively read those watermarks. Also when someone copies and shares the image again, the watermark stays the same and now they don't know if the image was shared from the original source or the first sharer, unless that platform rewrote the watermark to remain unique. So a waterproof chain of attributions would need all the platforms involved cooperating with each other.