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sanitation@lemmy.today to interestingasfuck@lemmy.world · 3 days ago

This image doesn’t contain a single red pixel. You perceive red because of your brain perception (color theory)

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This image doesn’t contain a single red pixel. You perceive red because of your brain perception (color theory)

sanitation@lemmy.today to interestingasfuck@lemmy.world · 3 days ago
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  • onlyhalfminotaur@lemmy.world
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    3 days ago

    Ok now define “red”

    • owenfromcanada@lemmy.ca
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      3 days ago

      Any color where the red level is higher than either the green or blue values.

      • ccunning@lemmy.world
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        3 days ago

  • Iconoclast@feddit.uk
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    3 days ago

    And this doesn’t contain a single yellow pixel. Take a magnifying glass and zoom into your monitor if you doubt it.

    • Fluffy_Ruffs@lemmy.world
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      3 days ago

      🤯

  • paraphrand@lemmy.world
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    3 days ago

    I wonder if compression algorithms ruined this an injected some red.

  • hdsrob@lemmy.world
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    3 days ago

    Saw the thumbnail and went “I don’t see any red”… then the full size image loaded and the strawberries triggered it.

    • Logi@lemmy.world
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      3 days ago

      Same. When I recognized the shapes to be strawberries, they slowly faded to red.

  • Grimy@lemmy.world
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    3 days ago

    If you zoom in, there’s clearly red pixels.

    • Cherry@piefed.social
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      3 days ago

      Yeh there are a lot of greys in the red but also some red tones for me for me that purple tone was from the picker.

      image

    • usualsuspect191@lemmy.ca
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      3 days ago

      Definitely

  • ccunning@lemmy.world
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    3 days ago

    Does this mean all the pixels are x00nnnn? Or is there a threshold (absolute or ratio) where a pixel is considered “red”?

    • owenfromcanada@lemmy.ca
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      3 days ago

      No, it means that if the colors are 0xRRGGBB, the RR value is never higher than GG or BB (checked in an editor quick).

      • ccunning@lemmy.world
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        3 days ago

        • owenfromcanada@lemmy.ca
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          3 days ago

          Good catch, though that’s pretty dang close to gray. But technically some sort of red.

  • farmgineer@nord.pub
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    3 days ago

    Nothin in there looks red to me, but I am mildly colorblind

    • Consti@lemmy.world
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      3 days ago

      The strawberries look very red to me, and some of the boxes around have some redish tint (more toward purple)

      • farmgineer@nord.pub
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        3 days ago

        The right too swatch is blue-green, the bottom right green with some blue, and the others grey or brownish. I would probably believe someone if they told me middle right was a very browny red, but I don’t really see any red there. Strawberries are not al all red to me.

        • celeste@kbin.earth
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          3 days ago

          That’s interesting! Your colorblindness in this case means your brain isn’t lying to you like mine is about red being there.

      • hdsrob@lemmy.world
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        3 days ago

        If I see the entire picture, the center right and bottom left panels look red(ish) to me, along with the strawberries.

        But if I scroll the portion of the picture that has the strawberries in it up so that I only see the crust, then those two go back to being a shade of grey.

  • IWW4@lemmy.zip
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    3 days ago

    Thats really cool!

    I see a lot of red in that picture.

  • TomMasz@piefed.social
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    3 days ago

    I’m red/green colorblind, it looks gray with a slight red cast to me.

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