I'm just crossing my eyes to see the "negative" depth image but some like "McLean’s House" and "Lincoln visits General McClellan at Antietam" don't appear to have any depth changes between them.
Otherwise you're seeing a kind of inverse stereo image.
(EDIT: Having said that, I tried a few of the images and the stereo effect is subtle. The soldier on the horse — I was not even able to get that to "snap" for me. I am not great with cross-eyed stereo though.)
I've tried to show my point in these videos which show basically no difference between the two images when overlapped and crossfaded between the two. https://imgur.com/a/RMy3QA3
The creator mistakenly used the same image twice.
The two men in a tent image is likewise a dud. If we look at the pole at the tent entrance, there is no difference in parallax between that and objects at the back wall.
The Abe Lincoln doesn't pop out much for me.
The dead soldiers in the field also seems to be identical images.
The clearly genuine ones are the horse-drawn carriage in the forest, and the horseman in front of the cannon.
Most people are not able to cause their eyes to diverge, so the scale of images in a stare-into-distance stereogram is limited by the interocular distance.
In cross-eye configuration, larger images can be used.
(Of course, the use of magnification in stereoscopes relieves the issue, as well as making it easier for the eyes to focus, since the magnified virtual images appear farther away. Viewing stare-into-distance stereograms requires the eyes to believe they are looking far away due to the parallel gaze, while simultaneously focusing near on the images; magnification brings the images farther out.)
If the spacing between them is wider than my inter-ocular distance, I find them impossible to converge.
I made stereograms in the past and wanted to see larger images with the naked eye, so I had no choice but swap the images and cross the eyes.
(FYI: -vf stereo3d=in=sbsl:out=sbsr in ffmpeg.)
img {
transform: scaleX(-1);
}
javascript:(()%3D%3E%7B%5B...document.querySelectorAll(%22img%22)%5D.forEach((e%3D%3E%7Be.style.transform%3D%22scaleX(-1)%22%7D))%3B%7D)()%3B
But it doesn't achieve the effect we are after at present.
When we reflect the stereogram left to right, the orientation of the parallax recorded in the images also flips and so the net effect is zero: if the original stereo pair is a stare-into-the distance stereogram, the reflected stereogram is also.
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd....
crazy but I feel sick now ha, I had a VR headset before and I'd get super sick trying to play FO4, VRChat wasn't bad
ramesh31•8mo ago
JKCalhoun•8mo ago
kazinator•8mo ago
kazinator•8mo ago