The New York Public Library has collected 40,000 stereoglyphs (double-picture photos that were so popular through the early 1900s) and added an app to let you create your won StereoGram (moving 3D image) or Anaglyph (Red-Blue glasses image)!
There’s even a gallery to view the conversions done by others (some of whom will NEVER do this work for a living, or at least not successfully!)
Check it out, it’s very, very cool!

This is an example of a stereoglyph - two images taken from slightly different viewpoints (If you can do the cross-your-eyes thing to see those dot-stereograms, it works for these too, you just need to be fairly close or enlarge the image)

This is an anaglyph - an image viewable in 3d by using those red-blue glasses.

And this is a stereogram - two images alternated (in an ani-gif in this case) to give the 3d feel. Note that I think this was a HORRIBLE choice for the site to use to demonstrate! See below for a better one.

I think this is a much better example of the 3d feel a stereogram can give than the one above. Just like using the old stereoglyph viewers, some images were great, some okay, and some really not well suited for 3d.
- Stereogranimator App on New York Public Library Site -
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