I'm trying to write secret messages to people. Is it possible

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Anonymous
2017-06-09 12:54:50 Post No. 3091817
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Anonymous 2017-06-09 12:54:50 Post No. 3091817 [Report]

I'm trying to write secret messages to people. Is it possible to write something with UV paint, take a normal photo of it, then, in Photoshop or Gimp, say, remove all non-UV colors?

Pic OC, but unrelated

Anonymous 2017-06-09 09:09:42 Post No.3091968
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Anonymous 2017-06-09 09:09:42 Post No.3091968 [Report]

>uv paint

so sunscreen

Anonymous 2017-06-09 12:33:51 Post No.3092007
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Anonymous 2017-06-09 12:33:51 Post No.3092007 [Report]

Does that bear have eight eyes or something wtf

Anonymous 2017-06-09 03:41:10 Post No.3092075
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Anonymous 2017-06-09 03:41:10 Post No.3092075 [Report]

>>3091968
That's UV blocking paint. UV paint is something you can buy for fishing lures.

>>3092007
Looks like glare off cheeks and nostrils.

Anonymous 2017-06-09 05:24:33 Post No.3092113
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Anonymous 2017-06-09 05:24:33 Post No.3092113 [Report]

>>3091817

Here you go OP. This is from the YouTube channel, Computerphile. Which is a branch of the very popular Numberphile channel.

https://www.youtube.com/watch?v=TWEXCYQKyDc

This particular person is an excellent presenter, and is very knowledgeable in his field. He has some great videos.

But what you're trying to do is called steganography. And this video explains it.

Anonymous 2017-06-09 06:03:52 Post No.3092121
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Anonymous 2017-06-09 06:03:52 Post No.3092121 [Report]

>>3092113
This is a good video. I love Numberphile.

But my question is more about the mechanical color ranges for common cameras and photo editing tools. I want to be able to paint a message on a wall, have anyone be able to take a photo of the wall, then take those photos and remove bits that are not on the UV spectrum.

Anonymous 2017-06-09 11:17:33 Post No.3092300
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Anonymous 2017-06-09 11:17:33 Post No.3092300 [Report]

>>3092121
i'm no expert, but i doubt the resulting photos contain any data that is not.. visible?

Anonymous 2017-06-11 04:22:12 Post No.3092980
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Anonymous 2017-06-11 04:22:12 Post No.3092980 [Report]

>>3092300
I want to test it, but I don't even know what function of GIMP/PS to use...

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible. Read more on this topic here - https://archived.moe/talk/thread/1694/

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/