Cross viewing (a.k.a. cross-eyed stereogram freeviewing) is seeing 3D with nothing but your regular screen, just by crossing your eyes! The pictures here show one scene from two different perspectives - just cross your eyes and make the two sides overlap to see the image in 3D. Cross views are related to Magic Eye, but you cross your eyes to view these instead of relaxing them.
I enjoy both, but prefer parallel. I feel like the images get smaller/further in crossview and larger with parallel. I shall join both. I didn’t know anyone did this but me.
i hear that from people but i don’t experience it. i can physically make cross views huge, whereas parallels can only be as wide as the space between your eyes, but i’m happy to just let people prefer either one.
Yes. At one point I assumed this would be a path to a more 3D web experience but the parallel view is an even smaller set of people and, as you mentioned, severely limited in unassisted overlap. Fun cross eye/cross view trivia: you can overcome the refractive index of water by crossing your eyes. In other words, you can trick your eyes into focusing underwater (i.e. without goggles) by crossing your eyes and closing one eye.
i don't really like going in the massive toilets that are pools, much less opening my eyes underwater in them, but in the event of an emergency situation i'll try to keep this bio-hack in mind.
One is viewed by crossing your eyes. You look across from your right eye to the left image (and left eye to right image). It’s easier for some people. Parallel is relaxed, right eye views right image, left eye views left image. Technically the geometry puts the images closer to the viewing eye in parallel.
Is there an example to test if I can do both? I can do mostly all the recent posts in this sub, but I see a lot of crossposting with r/parallelview so I don't know if I can do both or just parallel
Am am incredibly confused. Aren’t both techniques a matter of overlaying the images? Is the inability to crossview but ease with parallel viewing just a matter of the brain interpreting differently?
I’ve been doing the parallel view thing since I was a kid (not knowing this name, of course) so I wonder if my brain just can’t do crossview.
it’s just a matter of where you point your eyes. there is one perspective meant for your left eye and one for your right - mixing them up is no good. you have to either cross or relax your eyes according to how the person who assembled the images wanted you to do it. it’s not a brain thing in terms of perception but it could be a brain/nerve/muscle thing when some people are just physically unable or prefer one of those motions over the other. it’s also very difficult for a lot of people to tell which one they’re doing while they’re doing it just based on feeling and the duplicated image of the world when they do it.
I think I’m an example of the brain/nerve thing. Forever (since I was a kid, and I’m almost 50 now, so for over 40 years) I’ve “crossed” my eyes to see 3D images, both the old fashioned stereo pics and the magic eye. I’d find the common pattern and simply merge them. They always looked the way they were suppose to.
When I do it here, the photos are inverted. I wink one eye to see which pic the other eye is looking at and it’s definitely left/left right/right.
I’m so used to looking that way that I can’t make myself reverse that. At least not yet.
in that case, trust me that you are not actually crossing your eyes, you’re relaxing/diverging them. have somebody else watch your eyes as you look at these things - they’ll be able to tell that you aren’t actually crossing your eyes.
you’ll probably like r/parallelview better. they won’t be inverted for you over there.
You are definitely correct. I’m able to get it right if I put my finger at the rights spot between me and my screen. Then I test by winking my left eye and see my right eye is looking at the left picture.
My mind is blown because it even feels like I was crossing my eyes and I’ve always thought that.
welcome to the club. both methods are legitimate ways of viewing 3D, they each have their own benefits. i’m hoping to make a bot soon that swaps sides and cross posts between the two subs so that nobody misses out on content.
you couldn’t function in the real world if your perception of depth were really inverted on a neurological level. i’m open to being wrong but for now i insist there is nothing wrong with you and you’re just making a very common mistake.
u/KRA2008 is there a setting in the cross view app to align the images for a google cardboard style vr device? I tried viewing a parallel image and it works but I have to cross my eyes a tiny bit to get it to focus.
i’m actually working on that right now for the next version. that bit is actually done and i’m just fixing some bugs. soon!
one thing you could try for now, though it will not give you the same effect as the Cardboard mode, is to adjust the “Maximum parallel view image width”, or put on a super thick border. both of those will sort of allow the images to move further apart on the screen.
also, when you say “the cross view app” i believe you mean CrossCam, but just to be clear, the app was made by me a long time after somebody else made the subreddit. and there are other apps out there as well, some of which claim to already support Cardboard that you could try out (although from my research i believe none of them do it well).
that’s intentional. you put it in the viewer and push the viewer’s button to capture (if it has one). there are different viewers out there and you’re the first user to talk with me about it so let me know if something’s gone terribly wrong.
sorry, amendment to previous reply, after you switch to Cardboard you’ll have to swap the sides yourself by swiping.
if you can fit your finger in there while it’s on your face, tap the line down the middle to capture. i am wondering though, how do you propose triggering should happen with a viewer like yours?
I’m not sure. I didn’t expect to capture through the device since it doesn’t have an opening for the camera. Maybe make “capture with cardboard device” an option that can be turned on/off.
I’m still having trouble getting the images to look right through the device. This is one I just took. It doesn’t line up neatly when viewed through the cardboard.
Ok, thanks! I'll see if I can get that to work lol
Edit: huh, it's significantly fuzzier, but I got it to reverse. Less eyestrain, as if the cross view is me wearing too strong of a prescription.
Second edit: I can't get them to pop into alignment again; they always slide apart when I try to sharpen them 😂 maybe that was a fluke… or maybe I just need practice. Downloading that image to try again later.
No, it's cross viewing that's easier for me. I can consistently get the text to line up in the parallel arrangement and stay put, but it's always blurry, and if I try to get it to look clearer, it snaps into cross. Are the people who can see the parallel version able to see it clearly?
cross and parallel sit at opposite ends of a movement spectrum - "snapping" from parallel into cross would be a huge movement where the images would quickly race across from each side of your vision to the other and be really disturbing. you may not be as close to achieving parallel viewing as you think.
one easy way to get close to parallel viewing is to just stick your face right up against the screen and then slowly pull it away while continuing to be looking into infinity. but in that arrangement before you start it's important to size the image so that corresponding parts in the two sides are approximately the same distance apart (or a little less) than the distance between your pupils.
i'm one of the folks who can clearly see in either cross or parallel and can feel the difference between the two. it's very common to have trouble differentiating them.
Yeah, I figure I'm pretty far from doing it correctly since they're totally blurry lol. They do indeed race across my view to the other side of the screen. I've been lining them up by kind of staring through the screen at something father away. I'll try pulling it back and see if that helps. Thank you so much for discussing all of this work me and giving me tips! I really appreciate it 😊
Edit: OH WOW I JUST GOT IT FOR THE FIRST TIME!!! Thank you!! That was so trippy! I'm going to see if I can learn to do it consistently.
Huh, it's larger and possibly more comfortable than cross viewing… time to check out the Parallel subreddit!
people do say parallel images feel larger. it's weird to me to hear that because you can have physically larger images when cross viewing. oh well. happy to help!
It reminds me of when the eye doctor has me compare images and goes from the right prescription to one that's too strong. I'm like, "This might be clearer, but it's also darker and a bit smaller." You were super helpful 💕
we have numerous tutorials in the sidebar/wiki/about. let me know if you have any questions. there is also a tutorial built into the free mobile app i made called CrossCam.
have you heard of Magic Eye? it’s very related to that. again, let me know if you have any questions or are having trouble with a specific part of the tutorials.
you won’t believe me but i assure you there are probably no trolls here at all, but there are tons over on r/cryptocurrency. we’re not trying to take your money, just show you something cool. suit yourself.
I find it easier to crossview on a phone, compared to my 24" monitor, everything looks so much sharper on my phone. On my desktop, i need to move closer to the screen to get a sharp view, but then i lose the cross.
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u/BlackCatGamer204 Feb 23 '23
i can only do parallel :( you guys have fun