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I've acquired a new superpower

danielwirtz.com

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Re: I've acquired a new superpower

#381

Post by einpoklum »

titzer wrote: post #309
grishka wrote: post #305

This whole "just cross your eyes" thing has never worked for me, not once. I've seen these strange patterns printed on the backs of notebooks that supposedly make some sort of 3D effect when you "just cross your eyes". Later, when I saw similar images online, I was able to at least visualize these hidden shapes by opening the image in photoshop, duplicating the layer, setting the copy to "difference" and moving it le…

Here are some tips; 1. When you cross your eyes, gradually let them return to uncrossed. Try to do it as slow as possible. Along the way, try to line up any structures that you see in the image that are repeated from left/right half. 2. Once you are able to hold a cross-eyed gaze long enough with lined up left/right half, slowly move your eyes between different features near the middle. Your eyes will naturally want…

> 1. When you cross your eyes,

So, how exactly is that supposed to work?

I can manage some de-focusing which makes me see 4 images rather than two. Is that part of it? Otherwise, I don't get it.

Re: I've acquired a new superpower

#382

Post by mickeythug »

fonema wrote: post #321
grishka wrote: post #305

This whole "just cross your eyes" thing has never worked for me, not once. I've seen these strange patterns printed on the backs of notebooks that supposedly make some sort of 3D effect when you "just cross your eyes". Later, when I saw similar images online, I was able to at least visualize these hidden shapes by opening the image in photoshop, duplicating the layer, setting the copy to "difference" and moving it le…

Same here, but I always imagined that for it to work, I would need to have roughly equal vision in both eyes, which I don't. Everything is blurry with my left eye, and no glasses or lenses have ever helped. I attribute this as the reason.

Suffering from the same exact plight

Re: I've acquired a new superpower

#383

Post by nneonneo »

For whatever reason, it was far easier to do this on my phone than on my laptop, even after trying to fiddle with various combinations of zooming in/out and adjusting my distance to the screen. In some cases, it can also be easier to do without glasses (if you customarily wear them) as it makes the defocusing easier.

The effect itself is basically similar to the Magic Eye stereograms (https://en.wikipedia.org/wiki/Magic_Eye) which by themselves are pretty neat; your brain can rapidly detect subtle offsets in random patterns to reconstruct depth cues. In the case of “spot the differences”, the shimmering is due to the irreconcilable disparity between left and right images, which manifests visually as a glaringly obvious “unphysical” apparition - e.g. flickering between the left/right images, or appearing to be out-of-plane with the rest of the picture.

Re: I've acquired a new superpower

#384

Post by TheSpiceIsLife »

jvm___ wrote: post #272
klondike_klive wrote: post #219

Earlier quoted context omitted.

One of my dad's sayings when somebody in a film delivered a line and then disappeared was "6 months rehearsal for that."

I envision happy families watching the end credits for Dad's name as Third Assistant Caterer on a big budget film.

Best Boy Grip, the assistant to the Key Grip

Re: I've acquired a new superpower

#387

Post by Ericson2314 »

nwatson wrote: post #378
Ericson2314 wrote: post #369

Earlier quoted context omitted.

That was me at first. I think the "cross eyed" phrase is a bit ambiguous. What I ended up with (I think) is a focal point not closer than the screen but farther than it. My eyes didn't want to do it at first but then they did. What is weird about it is the focusing and focal point are out of sync --- my brain can do it but the weird feeling is one of "gosh, this thing is a lot closer than it should be" where "should…

That focus-farther-than-the-page works (for most people) as long as the distance between the (center of each of the) two images on the page is smaller than your interpupillary distance. In this case the left eye will see the left image, the right eye the right image, in the overlaid resolved image. For most people, having the images resolve in front of the plane of the page such that in resolved overlaid image the ri…

Thanks, that is nicely explained --- you finished the thinking I had only started!

Are the eyes mechanically capable of pointing outward (so the interpupillary distance is not longer a constraint)? If so, is the problem then neurological not mechanical (brain doesn't want to send signal so they do that)?

Re: I've acquired a new superpower

#389

Post by TZubiri »

This makes my eyes hurt.

And it's also not really a usefull life or even primitive skill, just a byproduct of our double eyeballs, which are meant for redundancy and depth measuring.

Pass.

(Although it was cool to do it once and see the third image in the middle.)

Re: I've acquired a new superpower

#390

Post by whycome »

jvm___ wrote: post #272
klondike_klive wrote: post #219

Earlier quoted context omitted.

One of my dad's sayings when somebody in a film delivered a line and then disappeared was "6 months rehearsal for that."

I envision happy families watching the end credits for Dad's name as Third Assistant Caterer on a big budget film.

And getting pissed off because Netflix minimizes it into the corner to already try to push some other show on you.
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