Today's Inspiration: Magic Eye [Stereogram]

Back in the day, this stuff is sensational. But now it’s almost forgotten.
So, hopefully this post can Spark some ideas for your next AR Filter creation and try to reinvent or revolutionize stereogram.

What is Stereogram? Or to be precise, Autostereogram.
Wikipedia says:

An autostereogram is a single-image stereogram (SIS), designed to create the visual illusion of a three-dimensional (3D) scene from a two-dimensional image.

In order to perceive 3D shapes in these autostereograms, one must overcome the normally automatic coordination between accommodation (focus) and horizontal vergence (angle of one’s eyes). The illusion is one of depth perception and involves stereopsis: depth perception arising from the different perspective each eye has of a three-dimensional scene, called binocular parallax.

Here are some example of an Autostereogram:

the hidden image revealed by photoshop (cheats)

the animated version:

A music video using using stereogram (This is a good one, recommended to watch!):

An explanation about this stereogram optical illusion:

I used to be able to see the hidden image from stereogram, but today it’s so hard to make it “clicks” again.
So, I hope those who are still able to see stereogram image to give it a try to make some interesting filter with it.

Idea 1:
For the hidden image, maybe try use premade tiled texture and let the hidden image is the person segmentation with some sharp step mask of the luminosity to add some details of the person.

Idea 2:
For the mechanism, maybe try to use the frame difference combined by device motion to enhance or help the people to find the hidden image.

Idea 3:
Or maybe using camera.transform for face landmark of the iris to guide how crossed eye you have to be to see the hidden image by calculating the distance between the center of iris A and B.

If you create some Autostereogram effect, share the link here to inspire others!
Goodluck and Happy Weekend!!