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mpais

HN member
Joined
Sat, Apr 06, 2019, 3:23 PM UTC
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9 items

About mpais

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Recent public activity

  1. comment
    Comment #48881274

    Shameless plug, SQZ does just that, you can check it out at https://github.com/MarcioPais/SQZ Also for some discussion on more technical aspects and sample images, check out the th…

  2. comment
    Comment #39066561

    > What environments do you see this benefiting? Anywhere where you have visual content that needs to be "consumed" in a large variety of possible viewings conditions, from low to e…

  3. comment
    Comment #39060722

    The codec is extremely simple (hence why it's relatively fast even with such unoptimized code) and as such doesn't even use any entropy coding backend, which is what allows for the…

  4. comment
    Comment #38993558

    > Lossless ones are basically just ZIP Lossless image compression is a vast field with myriad different requirements and solutions, and generalizing like that is just plain wrong. …

  5. story
    Show HN: SQZ – Low complexity, scalable lossy to lossless image compression

    I'd like to share a little toy project of mine, a really simple image codec that can do lossy to full lossless image compression with complete scalability at a byte level granulari…

  6. comment
    Comment #30886337

    QOI is not on the pareto frontier for compression [1], it is however extremely simple and is a nice introduction to data compression for anyone wanting to learn about the field. [1…

  7. comment
    Comment #30519654

    paq8px v206 [1] with option "-8art" compresses it to 9,145 bytes using ~2GB of memory in 82s, mostly due to a better pre-training stage. [1] https://github.com/hxim/paq8px

  8. comment
    Comment #20840334

    Some RAW formats are pre-compressed, usually with very simple (hence fast) algorithms, and some aren't even lossless (Sony ARW). It's often possible to further compress them with s…

  9. comment
    Comment #19591218

    "his relatively simple LSTM-based neural net compressor is 10x faster than one of the more complex state of the art algorithms while delivering comparable compression ratios." No, …