Submitted 3 days ago by wolframhydroxide@sh.itjust.works to science_memes@mander.xyz
https://sh.itjust.works/pictrs/image/9ae4c41d-0a59-47e7-837e-35fcc0a9f11a.jpeg
My time has come!
The above stereographic image is for cross-eyed viewing (most stereograms are wall-eyed, so you may need to put your finger in front of your screen until this one comes into focus)
This is an image of Honolulu, Hawaii, published by NASA. Note Diamond Head (the volcanic crater) in the south.
Here are some other stereopairs published by JPL:
Image
Wheeler Ridge, California
Image
Mount Saint Helens
Image
Salt Lake Valley, Utah
Image
Wellington, New Zealand
Since some people are apparently very salty about these being cross-eyed, despite the fact that that’s just how NASA made them, here, special for y’all, a selection: Image
Thank you so much! This is so much easier for me.
I wasn’t going to complain or anything, but this post made me realize that I’m actually incapable of viewing cross-eyed. It actually hurt my eye sockets to try.
These ones are… different. When I use these ones the mountain ridges appear to dip inwards? Away from the screen. This was not the case for the ones in the main post
Thanks. These are cross-eyed, not the originals. The originals viewed with crossed eyes all made hole out of the mountains.
I assure you, given that I made this image, that these are Wall-eyed, and the originals above are cross-eyed.
These are rad. Excellent post.
Thank you, they look amazing
Why do all of these look inverted to me? Like, what should be a mountain is a deep hole in the ground.
These are cross-view, your probably using the focus at infinity trick instead.
Wow, I had the same problem as the one you replied to and I thought you were making a joke I didn’t get but I stand corrected. You were absolutely 100% right.
Turns out I was focusing at infinity, didn’t even realize it was a different thing than crossing my eyes until I tried to cross my eyes first before focusing on the pictures…
Very cool, thanks.
Wow I had no idea it could be done that way. Just tried doing it and the image is way blurrier when 'inverted'. I am near sighted. Does this mean it applies to illusions too?
Yup. That was exactly it. I was thinking “I know how to do these” and not even paying attention to the instructions at the bottom.
Boo, these are cross-view, not parallel-view.
I can still view these, but it’s much much harder for me.
I don’t know why parallel isn’t the default.
Lots of people can really easily go cross-eyed and look at these with no practice whatsoever. Fewer people can do the parallel kind with no practice or with the amount of practice they’ve already done.
If you want wall-eyed viewing, you can just download the image and mirror flip it in an image editor.
Incorrect. You don’t mirror flip it, you swap the images to convert between cross/parallel view.
Source: I wrote my own stereogram software, I know the difference.
I grew up with the Magic Eye books and have never been able to do cross-view as a result.
I can never get the parallel view to work. My eyes want to focus too quickly. :( cross view is so much easier to me. I wish they came in both all the time.
I have one of these stereoscopes! It came with a bunch of nature scenes, but a few slides had 1800s 3D porn too!
Porn exist since photography and also before, even in 3D, only technology has improved
Not sure why but those NEVER work for me lol
Not this, not magic eye books, absolutely nothing works.
Tried for many hours back in the day
I can only do parallel-view, not crosseyed, those look so surreal that way (inverted height/depth basically)
Is that why I’m seeing things that way? Don’t understand the difference really, but is really odd to see Mt St Helens as a sinkhole instead.
Works opposite for me. Cross-eyed versions look correct, and the parallel/wall versions have inverted depth. Same thing with magic eye images, they’re always inverted, like I’m looking into a mold of what the object is supposed to be.
I tried so long I tried every method, never worked for me. Then eventually I found an image that made it work for me
(Sorry for the Reddit link). How I do it: put your phone screen right before your nose and unfocus your eyes. Then, don’t move your eyes, don’t move your focus, but slowly move the phone away from your face. At about 10-20cm distance, you should be able to see a squirrel with a nut in its hands.
After that it became very easy to do other pictures simply by knowing what to expect (an actual 3d image).
That being said the one above is really hard.
If you have astigmatism or greatly different lens prescriptions per eye, it may be very hard for it to work.
If you do have astigmatism, you can kind of ‘squeeze’ or scrunch your eyelids down to compensate as you cross your eyes, and it may work better without glasses and closer up
Some people it just never works with
Do you happen to have a dominant eye? If you primarily use one eye over the other I dont believe these work. For me, I have a scar in the middle of one eye that prevents most straight ahead vision, so its only used to add peripheral information.
These are all backwards. The eyes are reversed so everything that’s supposed to be a hole looks like a bump and vice-versa.
You’re doing “wall eyed” viewing. These are for “cross-eyed” viewing. “Wall-eyed” means your eyes are focusing at a point behind the image. You need to cross your eyes for these. Try putting your finger in between your screen and your eyes, varying the distance until the dots merge. Then, remove your finger, focusing on the image itself. That should allow for cross-eyed viewing.
Focusing at a point behind the image is exactly what we’ve always done for every other magic eye poster because it only requires relaxing your eyes (staring off into the distance) for the image to pop into focus. Cross eyed viewing is damn near impossible on any screen at less than an arm’s length away without significant eye strain or external devices (like the stereoscopic viewers that photogrammetrists would use to view these kinds of images without inducing a migraine) and since the dot is on top holding a finger up as a guide ends up obstructing the entire view unless your arms are growing out of your forehead. The wall eyed view has none of these issues.
I appreciate the post and your effort. But, the images themselves are frustrating and have killed my initial reaction, which was to share them further. Because I’m nearly the only person I know that wouldn’t loose interest in the explanation for “correct viewing” half way through. If they were wall eyed stereoscopic images, I could just say “Magic Eye”, they’d remember Mallrats, see the schooner, and go “Ooh neat.”
Ahhhh this doesn’t work on phones? I also did Wall eyed, works quite easy but the cross eyed hurts lol.
For a lot of people cross eyed views are easier, they would probably give similar complaints for a wall eyed view. It depends a lot on how your eye muscles behave
Mountains are deep, land is puffy. Weirded out of that was ever the purpose.
I miss r/crossview and the short love r/crossviewnsfw. Damn greed ruining everything good in the world.
Really can’t seem to understand how this works.
Never did any “magic eyes” or whatever books as a kid, so maybe I just don’t have any practice in this, but whether I try to cross my eyes focusing beyond the screen, or “above” the screen, I can’t get the resulting middle image to look like anything other than a blur.
Perhaps my eyes are somehow odd on the other hand. I don’t need glasses though, so I’m a bit skeptical that’s it.
I tried all the guides I found in this thread, including the floating hot dogs, attempting varying distances both with the screen and the finger, then trying the wall-eyed variants too for all of them, none of them work for me.
So odd. It seems it should work. No idea what I am doing wrong here.
Or is this the joke? To get people to squint for minutes on end on their screen?
I promise this isn’t a troll. In your case, it may be that your eyes are having difficulty focusing on nonexistent objects. If they’re blurry, it’s not that your eyes aren’t crossing, but rather that they are out-of-focus. Eyes naturally focus the lenses to bring near or distant objects into clarity, but when I was first doing magic eye images a long time ago, it also took me a while to convince my eyes that they needed to focus on the images.
My guess is that, since the actual images are on the screen at distance A, but your eyes are crossing as if they’re looking at distance B, your eyes are auto-focusing for objects at B, but the images are still actually at A, so they appear out-of-focus.
I used to be able to do them at will, and even overlap images an additional time to get a crazy second level of shape.
But now I can’t, thanks to the american health insurance industry. yay!
They do work. It takes some practice to get them though. At first I used a pencil or something to focus on while I made the two dots merge together, stayed focussed on the pencil until my brain “saw” the image behind it, then it sort of locked in and I could take the pencil away. I’ve done so many of them now that I can just go crosseyed to bring the dots together, then look at the middle picture.
The 3D image works by tricking your brain into seeing a third image that isn’t really there. We’re used to constructing 3D images from two slightly different views; we do it all the time, so the two images are slightly different and when overlaid use the same mechanism to make you think it’s 3D.
I was gonna tell you it was a meme and they don’t actually work. This being in science meme I thought they might actually be stereographic images, but it’s from so far away you wouldn’t be able to discern any 3D-ness. But I was wrong the height is exaggerated. For me the walleyed version worked for me, I just had to zoom in on one image and hold my phone quite far away.
It’s not very active, but still has good content.
For some reason I’m getting the depth inverted. Mt. Saint Helens looks like a hole in the ground.
You’re doing “wall eyed” viewing. These are for “cross-eyed” viewing. “Wall-eyed” means your eyes are focusing at a point behind the image. You need to cross your eyes for these. Try putting your finger in between your screen and your eyes, varying the distance until the dots merge. Then, remove your finger, focusing on the image itself. That should allow for cross-eyed viewing.
That’s so weird, I always thought I was crossing my eyes when doing this…
Thanks that was it. I can lock in and focus the wall style very fast, as it is the most common. This took me while but got it with the finger trick!
I love these so much thanks! On YouTube there’s also a ton in video format, like this one by Brian May.
Amazing! Thanks!
It’s a schooner!
You dumb bastard, it’s not a schooner it’s a sailboat.
A schooner IS a sail boat, STUPID HEAD
Dude, these are dope! Thank you!
Wow! Super depth!
This is a great way to teach people how to do the Magic Eye puzzles. It’s the same method but was notably easier to do this than a Magic Eye.
This is actually the opposite method you’re supposed to use. If you cross your eyes to see a Magic Eye photo, the image will be inverted/inside out.
To view a Magic Eye, you’re supposed to look through the image. Personally I was never able to pull it off. These cross-eyed images are a lot easier.
I was wondering why it seemed inverted to me. I saw crevasses instead of mountains, but it didn’t make sense
Because of your comment I was finally able to do the magic eye!!! I can flip back and forth between them and invert the mountains. Thank you!!!
I’m glad it helped!
Isn’t magic eye something different? I thout it was !autostereograms@lemmy.world instead of cross view images.
I don’t think the locations are all correct.
1st: Honolulu, Hawaii 2nd: Lake Palanskoye, Kamchatka Peninsula, Russian Federation 3rd: Wheeler Ridge, California 4th: Mount St. Helens, Washington State 5th: Mount Meru, Tanzania 6th: Salt Lake City, Utah 7th: Meseta de Somuncura, Patagonia, Argentina 8th: Wellington, New Zealand
The destruction of the coastline in Honolulu is so sad to see :(
Well, its the first time that i manage to see one of these magic eye images… but I need to ask. Most of this seem to be inverted (i see mountains as sinks, lakes and rivers are higher than peaks). Is this intended? I’m interpretint it wrong?
Cool effect. For me, it only works on a screen where the white dots are roughly the distance of my eyes. So not on a phone.
These are easier for me than normal Magic Eye pictures, because I can just use the “floating hotdog” method of putting it right up to my face, letting my eyes get used to being focused there and then slowly moving away from it until it pops out of the page/screen.
I have never ever in my life managed to make these work, I have no idea what’s wrong with my eyes
TIL I am a walleyed viewer
Oh, also, I really miss the old JMOL molecular models that you could view in stereo. Anyone know what software is required to make those?
I usually can do stereograms pretty well but for some reason I had to tilt my phone about 10° counter-clockwise for the stereo images to align to get the 3D effect.
Awesome! I cross-posted this to !crossview@lemmy.world :)
Ha, there is NO depth to this kind of thing it is just an illusion, don’t be fooled about what these tricky sciencists say.
EvilBit@lemmy.world 3 days ago
About 21 years ago (😩) I made a stereoscopic photo for some online contest. I was pretty proud of it.
Image
wolframhydroxide@sh.itjust.works 3 days ago
Ooh, nice depth!
EvilBit@lemmy.world 3 days ago
Thanks! It was a pain to set up the little screen trick but for what it’s worth, I won the contest!
crimsoncobalt@lemmy.world 3 days ago
I remember my HP IPAQ, it was my first mobile computing device. That thing was so much fun.
EvilBit@lemmy.world 3 days ago
I was mildly obsessed. It felt like the future! I miss technology like that. I’m kinda excited for all this AR stuff people are talking about because I haven’t really been excited by the latest and greatest shiny black rectangle in a long time.
Lojcs@piefed.social 2 days ago
It is a good one. Although my eyes kept trying to focus on the keyboad and failing
ReplicantBatty@lemmy.one 3 days ago
That is really cool and the PDA screen is such a cool effect!