I find the effect works best for the blue and not at all for red. I wonder if this could be related to chromostereopsis? It could be causing the red grid to appear superimposed above the grey rather than being filtered through it?
See Josef Alber’s Interaction of Color for more information and studies of relative color. It’s a fascinating subject and color theory is very useful for UX and getting more bang with less colors. (https://yalebooks.yale.edu/book/9780300179354/interaction-of...)
A tangential observation: the imgur site warns me that the image contains adult content when it clearly doesn't. I wonder if it is the girl at the bottom right of the image that's throwing the algorithm off.
Is this essentially a grid "mask" that lets the actual colors through on the grid lines? Or are the colors on the grid lines altered from the original color photo?
For some reason I twice read that as saying "this is a black and white potato", once when seeing the headline here and once in the Twitter title, and my momentary confusion upon seeing that the "potato" somehow translated to a picture of girls holding a turtle... just because of some color lines, wtf?? Oops.
It's somewhat scale dependent. If you zoom in enough on the OP image you can make out the cross-hatching quite easily, but at preview scale (i.e. standing further away from someone wearing such a shirt) the illusion's OK.
