this post was submitted on 29 Mar 2025
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Beyond RGB: A new image file format efficiently stores invisible light data (arstechnica.com)
submitted 1 week ago by cm0002@lemmy.world to c/technology@lemmy.world
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[–] wischi@programming.dev 9 points 1 week ago* (last edited 1 week ago) (1 children)

It's not just like jpeg with extra channels. It's technically far superior, supports loss less compression, and the way the decompression works would make thumbnails obsolete. It can even recompress already existing JPEGs even smaller without additional generation loss. It's hard to describe what a major step this format would be without getting very technical. A lot of operating systems and software already support it, but the Google chrome team is practically preventing widespread adoption because of company politics.

https://issues.chromium.org/issues/40168998

[–] uis@lemm.ee 2 points 6 days ago (2 children)

Both og JPEG and JXL support lossless compression.

[–] wischi@programming.dev 4 points 6 days ago* (last edited 6 days ago) (1 children)

JPEG does not support lossless compression. There was an extension to the standard in 1993 but most de/encoders don't implement that and it never took off. With JPEG XL you get more bang for your buck and the same visual quality will get you a smaller file. There would be no more need for thumbnails because of improved progressive decoding.

https://youtu.be/UphN1_7nP8U

[–] uis@lemm.ee 1 points 5 days ago

Then same can be said about JPEG LS and JPEG XL. Most browsers don't implement that.

[–] wischi@programming.dev 0 points 6 days ago

JPEG does not support lossless compression. There was an extension to the standard in 1993 but most de/encoders don't implement that and it never took off. With JPEG XL you get more bang for your buck and the same visual quality will get you a smaller file. There would be no more need for thumbnails because of improved progressive decoding.

https://youtu.be/UphN1_7nP8U