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herf

HN member
Joined
Mon, Jul 13, 2009, 11:53 PM UTC
HN karma
3,115
Public activity
433 items

About herf

Made f.lux. CTO Picasa->Google Photos. CMU, Microsoft Research. Imaging, 3-D, color, vision science.

Recent public activity

  1. comment
    Comment #49218993

    It's fine for installing, but uninstalling is madness: Windows uninstallers try to clean up all the registry and user profile stuff they install. Mac apps seem to just leave stuff …

  2. comment
    Comment #49183234

    This seems to do XYZ->RGB without any gamma correction. XYZ is linear, as is the transform to RGB, so we usually convert linear RGB to (gamma-encoded) sRGB at the end. The JS code …

  3. comment
    Comment #49157660

    GPTZero "AI" score for this post: 100%

  4. comment
    Comment #49127044

    So if this Mac uses 30-50W, that's 40-60 tok/Wh...vs maybe 80k for a modern GPU cluster? So that's about 1000-2000x more power for the SSD streaming, unfortunately.

  5. comment
    Comment #49126867

    Nicely illustrated, and only one criticism: our preference for luminance (using more bits for "Y" vs "Cr/Cb") isn't due to the number of rods in the eye - there are so many rods so…

  6. comment
    Comment #49008500

    I think portability is very confusing: they rolled out passkeys with no device portability (device-bound) and only recently added it (CXP). So for anyone with multiple devices it w…

  7. comment
    Comment #48681776

    You can turn off the notch, I mean crop it out at least.

  8. comment
    Comment #48610099

    HEVC used to be a capped license per organization, so not providing it in the OS seems really harmful and expensive. Has the cap changed recently?

  9. comment
    Comment #48571838

    Yes, I think part of it was the "dark fiber" at the time, made bandwidth relatively cheap. But most personal photos don't use that much bandwidth - being able to use them anywhere …

  10. comment
    Comment #48571609

    AIs and podcasts (which also grew a lot recently) are free alternatives, and pricing matters as much as attention.

  11. comment
    Comment #48571367

    This is gross, it could be a onetime fee. It's hard to remember with all the ownership changes, but the Photobucket era was really a different time, of "it's your data, you're in c…

  12. comment
    Comment #48362933

    good point - alpha is a notable exception, it is not luminance

  13. comment
    Comment #48361173

    I'll argue for the +0.5 solution. First, I don't like half-sized intervals at the edges, and second, a 255-based representation is typically a SDR (not HDR) image. RGB values repre…

  14. comment
    Comment #48352945

    Guess you can't pay to get end-to-end encryption back in Instagram DMs? They dropped it a couple weeks ago.

  15. comment
    Comment #48293934

    Link to the Musharbash article that spurred the congressional investigation (2025): https://www.thebignewsletter.com/p/did-a-private-equity-fire...

  16. comment
    Comment #48229402

    Except this math is 10x too high (unless accelerated depreciation is all of it) - a million tokens at 28 tokens/sec and 75W and 20c/kwh should cost $0.15 not $1.50. (And less with …

  17. comment
    Comment #48224829

    Two questions: 1. What is the search index? 2. The "description.md" example has things like "faces -> cluster_id". Is this from Davinci Resolve's face index? Things like faces+name…

  18. comment
    Comment #48115604

    We started taking the phones out of schools, so I guess now we are building them back into education laptops instead?

  19. comment
    Comment #48110995

    Hang on, this is a $2.99 one-time payment - below the level you can even buy ads and make a profit. There is no way he's trying to make billions of dollars this way, and it's hones…

  20. comment
    Comment #48110766

    The aspect ratios were much "taller" back then, which was kind of better for editing code. All these late 90s designs were near NTSC at the time - aspect ratios like 1.25:1 (1280x1…

  21. comment
    Comment #48026414

    If you back up to "intention" it's fully insane to make a GDPR argument against on-device AI. Yes it downloads bits, but those bits are not there to identify you - they are basical…

  22. comment
    Comment #47964994

    Chrome seems to use a custom inference runtime also (in addition to Gemini Nano). It would be better if this were all interoperable. The WebGPU alternatives like WebLLM do not have…

  23. comment
    Comment #47956316

    Any benchmarks? Scrolling is using 16% of my GPU (vs 5% in Sublime). Also things like mouse-down to activate a tab (vs mouse-up in Zed) make Sublime feel faster.

  24. comment
    Comment #47892485

    Doing this without the parents on board does not work. Kids can lie about their birthdate by a few years. Facial age estimation has error bars of like 5 years and many teens don't …

  25. comment
    Comment #47780063

    for the youngest ones, a lot of these are "mom's phone" or something like that, it's not even accurate to say you are identifying the user