5 ms·
I loved the article, but it overlooks one important point: although the JPEG format is frozen, encoders are still evolving ! Advances such as smarter quantizat
by JacobiX 1y ago
I loved the article, but it overlooks one important point: although the JPEG format is frozen, encoders are still evolving !
Advances such as smarter quantization, better perceptual models, and higher-precision maths enables us achieve higher compression ratios while sticking to a format that's supported everywhere :)
- edflsafoiewq 1y agoI guess you're thinking of jpegli? Do you know how big a difference this actually makes?
- JacobiX 1y agoMozJPEG, Guetzli and also Jpegli
- ksec 1y agoAnywhere from 5-15% if I remember correctly depending on source material. I was at one point thinking this would make JPEG-XL and AV1F moot because all of a sudden JPEG became good enough again. But the Author of JPEG-XL suggest there is still so much JPEG-XL encoder can do to further optimise bit / quality especially in the bpp below 1.0 range.
- qingcharles 1y agoJpegli is designed from the ashes of JPEG-XL (same author), both from Google. IIRC he also had a hand in the PNG format?
- cogman10 1y agoThis is true, but there are limits. It's a little bit like DEFLAT. Sure, very advanced compressors like Zopfi exist which can get better compression ratios. But then, there's also just Zstd which will get a better compression ratio and compression speed trivially.