this post was submitted on 19 Apr 2024
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JPEG XL

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Lossless jxl fail (infosec.pub)
submitted 1 year ago by larida@lemmy.sdf.org to c/jpegxl@lemmy.world
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So I took a png and used cjxl v0.10.2 and --distance==0 --effort==9 to convert it to a jxl file. And the result has color inaccuracies.

I checked that both files use RGB. In the Black&White part of the images I cannot see any differences, it seems to really be something about colours o this specific image...

Any idea what I could have done wrong?

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[โ€“] Atemu@lemmy.ml 6 points 1 year ago

No but if this is reproducible, report it upstream.

[โ€“] lurch@sh.itjust.works 2 points 1 year ago

i think the text used subpixel rendering in the original, but idk why that somehow bled into the other pixels during conversion