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fchollet's profile
François Chollet
François Chollet
François Chollet
Verified account
@fchollet

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François CholletVerified account

@fchollet

Deep learning @google. Creator of Keras. Author of 'Deep Learning with Python'. Opinions are my own.

United States
fchollet.com
Joined August 2009

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    François Chollet‏Verified account @fchollet Mar 29

    Modern military intelligence satellites have a resolution of 5-10cm per pixel (2-4 inches), so most things are big enough that you can see them from space. "Wow, that's a big tomato" "Yep, it's so big that you can see it from space"

    9:05 AM - 29 Mar 2021
    • 57 Retweets
    • 455 Likes
    • Louis Miguel “mask and vax” de Icaza Leolo Camaleone Néstor grateful_blake NLP nerd Davis Sawyer Subtain Malik Yurij Mikhalevich
    15 replies 57 retweets 455 likes
      1. Gabriele ( 🐒, 🐉, 👻, 🐎, 🪶) | Bom Dia Lisbon‏ @0xGabriele Mar 29
        Replying to @fchollet

        Soon enough available for commercial use as well

        0 replies 0 retweets 0 likes
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      1. DataDriven‏ @DataDriven3 Mar 29
        Replying to @fchollet

        It's so big the military is watching it from space and can't unsee it

        0 replies 0 retweets 0 likes
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      1. Bashuria Separatist‏ @GreenNerve Mar 29
        Replying to @fchollet

        i'm gonna expose myself on my rooftop, hopefully some officer will appreciate it

        0 replies 0 retweets 2 likes
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      1. New conversation
      2. Michael Hood‏ @michaelhood Mar 29
        Replying to @fchollet

        Are there any declassified full resolution/quality examples of what that imagery looks like? Must be wild. I've only seen the very downscaled KH-11 ones

        1 reply 0 retweets 0 likes
      3. François Chollet‏Verified account @fchollet Mar 29
        Replying to @michaelhood

        Yes, there is, courtesy of the former president. https://www.npr.org/2019/09/05/758038714/can-president-trump-really-tweet-a-highly-classified-satellite-photo-yep-he-can … Looks similar to what you'd normally get from a surveillance aircraft

        1 reply 0 retweets 16 likes
      4. Show replies
      1. Miguel‏ @apolmig Mar 29
        Replying to @fchollet

        iep, for our old Sat4Lives project @sfrias11 "a humanitarian frontex"

        0 replies 1 retweet 1 like
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      2. Utilitarian‏ @utilitarianlove Mar 29
        Replying to @masum1iii @fchollet

        Probably a huge difference in postprocess algorithms and software alone. Image processing has progressed so much.

        0 replies 0 retweets 0 likes
      3. End of conversation
      1. Robin Lobel‏ @divideconcept Mar 29
        Replying to @fchollet

        pic.twitter.com/8seviD6MwO

        0 replies 0 retweets 8 likes
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      2. فيصل السالم‏ @falsalem76 Mar 29
        Replying to @fchollet

        what's the field of view with such resolution? Gigapixel cameras (hundreds of sensors grouped together as one giant camera) is the only solution I know of to avoid sacrificing the field of view for high-res.

        1 reply 1 retweet 1 like
      3. فيصل السالم‏ @falsalem76 Mar 29
        Replying to @falsalem76 @fchollet

        Also, I wonder as to the lens diameter for these satellites. With large distances, large lens diameter is the only way to escape loss of resolution to diffraction of light.

        0 replies 0 retweets 0 likes
      4. End of conversation

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