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“Pigeon Neck” Illusion (2014)

michaelbach.de

11–20 of 82 posts

Re: “Pigeon Neck” Illusion (2014)

#11

I don’t feel this is much of an illusion. I think you just can’t see the movement of gray on black. Or maybe this is what illusions are in a very simple form?

How would you define what an optical/visual illusion is?

When your brain fudges the results of what you're seeing because of some hidden processing heuristic. If the bird were actually just colored black, then what we would see would be accurate. But its presented as if we should percieve continuous movement when we really shouldn't.

Re: “Pigeon Neck” Illusion (2014)

#12

I don’t feel this is much of an illusion. I think you just can’t see the movement of gray on black. Or maybe this is what illusions are in a very simple form?

Let's say you recreate this effect by painting the pigeons onto a transparency sheet, and moving the sheet above a paper with a striped background. The pigeon shapes would appear to bend, when in fact they do not... so in physical form, it clearly is an illusion.

As a pixelated image, I dunno: our insistence on viewing groups of pixels as shapes is an illusion to start with.

Re: “Pigeon Neck” Illusion (2014)

#13
post #2

Jesus, this illusion is so powerful, you’d have to have a very poorly optimized brain to really see anything else.

It took me several minutes before I could see the illusion. I just saw grey rectangles and pigeons smoothly moving to the right and had no idea what the “illusion” was supposed to be.

Re: “Pigeon Neck” Illusion (2014)

#14

I don’t feel this is much of an illusion. I think you just can’t see the movement of gray on black. Or maybe this is what illusions are in a very simple form?

With the pigeons it seemed illusory, but with just worms you can tell that's exactly whats happening. Dunno if it is the single-row shape or just less action on the screen allowing you to focus on one cell

Re: “Pigeon Neck” Illusion (2014)

#15
post #2

Jesus, this illusion is so powerful, you’d have to have a very poorly optimized brain to really see anything else.

It took me several minutes before I could see the illusion. I just saw grey rectangles and pigeons smoothly moving to the right and had no idea what the “illusion” was supposed to be.

When I started messing with the color I ran into that. If I shifted to a different grey, it just looked smooth to me. But either extreme, black or white, and the illusion was there.

Re: “Pigeon Neck” Illusion (2014)

#16

I don’t feel this is much of an illusion. I think you just can’t see the movement of gray on black. Or maybe this is what illusions are in a very simple form?

Play with the color of the pigeons. Slide it all the way to black, and it's no longer an illusion - the edges really do move in steps. Slide it all the way to white and the same effect appears in the inverse.

Somewhere in between, there are shades of gray where the smooth movement of the pigeons is visible. And there are shades of gray where your brain can't separate it from the underlying black motion. That's interesting, no?

That's what makes all optical illusions interesting - exploring the thresholds where our brain's perceptual machinery takes shortcuts.

I've noticed there's a tendency, especially among smart people, to be dismissive of optical illusions. 'I didn't fall for it' - because to a certain personality, it's important to feel like your mind can understand things and you can't be 'fooled'.

But good optical illusions aren't fooling you. You don't need to feel defensive about whether you were 'tricked'. They're hacks that exploit edge cases in your visual cortex, and cause your brain to be fed erroneous data. They're interesting and useful because they help you calibrate the instruments your brain uses to collect data!

Re: “Pigeon Neck” Illusion (2014)

#17
I was in bed reading this with an eye closed and was very confused until I discovered the illusion works for me only when I watch it with both eyes open.

I found this surprising—I know three dimensional optical illusions depend on focus and perspective, but I was unaware two dimensional optical illusions were as well.

Re: “Pigeon Neck” Illusion (2014)

#19
post #17

I was in bed reading this with an eye closed and was very confused until I discovered the illusion works for me only when I watch it with both eyes open. I found this surprising—I know three dimensional optical illusions depend on focus and perspective, but I was unaware two dimensional optical illusions were as well.

Thats interesting. I see it with either or both eyes.

Re: “Pigeon Neck” Illusion (2014)

#20
post #17

I was in bed reading this with an eye closed and was very confused until I discovered the illusion works for me only when I watch it with both eyes open. I found this surprising—I know three dimensional optical illusions depend on focus and perspective, but I was unaware two dimensional optical illusions were as well.

I let out a verbal "what the fuck" when I tried this. Same exact thing as you, it's absolutely striking.
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