Lepton image compression: saving 22% losslessly from images at 15MB/s

Re:Lepton image compression: saving 22% losslessly from imag... by jacobolus on Thursday July 14, 2016 @08:10PM (#12098171)

> outperforms PNG, lossless WebP, lossless BPG, lossless JPEG2000, and lossless JPEG XR

PNG was not designed to be used for photograph-like images. The rest of those were not designed to be lossless formats, the lossless version is just a tacked-on afterthought.

Very unsurprising to find a codec that can beat those.

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Re:Lepton image compression: saving 22% losslessly from imag... by are595 on Friday July 15, 2016 @12:08PM (#12101973)

In my own tests, I found FLIF generally beats PNG (PNG Crush/Optipng both in brute-force mode) for comics (greyscale, majority white) as well, but by a less significant margin.

It's also worth noting that there aren't many other lossless formats, so it's still a valid comparison. I'm sure neither TIFF nor RAW outperform FLIF either.

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Re:Lepton image compression: saving 22% losslessly from imag... by rleigh on Sunday July 17, 2016 @05:35AM (#12109571)

That's not a valid comparison for TIFF. TIFF is a container which supports multiple compression algorithms. You could plug FLIF in as a compression algorithm and use it directly.

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Re:Lepton image compression: saving 22% losslessly from imag... by are595 on Sunday July 17, 2016 @04:49PM (#12111751)

Alright, well against current commonly supported TIFF compression algorithms such as LZW, Packbits, and ZIP.

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