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.
Since some people are apparently rather salty about these being cross-eyed, despite the fact that that's just how NASA made them, here, special for y'all, a selection:
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?
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?
These are all backwards. The eyes are reversed so everything that's supposed to be a hole looks like a bump and vice-versa.
EDIT : TIL about cross v wall eyed. I dont understand why they would do it this way though ? The image is much less stable, and moving it at all completely breaks the effect. Wall-eyed really allows you to move and observe details without breaking.
Oh, also, I really miss the old JMOL molecular models that you could view in cross- or wall-eyed 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.
I've seen simlar things before, and the effect is cool, but these images don't really seem like the best demonstration of the effect. You really want something with large variation in depth. These top-down landscape shots have quite subtle changes in relative depth. I can kinda see the effect but it's quite subtle, especially when it's so out of focus.
Now my eyes are aching so I'm gonna stop. They're also called "stereo pair images" if you want to look up more. If you're having trouble getting the images to overlay over each other, make the image physically smaller on your screen (e.g. by zooming out of the webpage).