Show HN: HDR Steganography – one file / two images

Posted by brokensegue on Thursday January 30, 2025 @10:57PM
from the show-hn dept.

https://github.com/derenrich/hdr-steganography

tl;dr you can make a JPEG that looks totally different for users on SDR vs HDR displays

I'm curious if people think this is an actual issue or just a curiosity. I doubt this is novel but I recently discovered you can do this.

( 2 comments | on HN )

Re:Show HN: HDR Steganography – one file / two images by maalber on Friday January 31, 2025 @07:18AM (#42886911)

Cool! Did not know about this. I was not able to see anything other than the pipe - which I assume is the SDR versions, maybe some clearer instructions/limitations (and description of what you should expect to see) would be beneficial.

[ Parent | on HN ]

Re:Show HN: HDR Steganography – one file / two images by brokensegue on Friday January 31, 2025 @11:35AM (#42889131)

good point. I added more information to the README

[ Parent | on HN ]