I often like to work on low-resolution pictures, adding some data moshing or compression artifacts. Some of them look ok when printed on paper (but I had to make sure the hard edges are preserved, so no interpolation was done when resizing, or I asked for no resizing at all).
But I would like to push the pixels / low-res effect one step further and have the file printed or engraved or embossed, so that the hard egdes in the file can be felt by the finger. The result would be a normal frame that can be hung in the living room, but with a slight relief corresponding to, for exemple, each pixel's luminance level (or maybe I would need to compute and provide another special layer).
From some googling I think embossing produces soft edges, and it not used for big frames printed only a few times. I did not see any "engraving" printers, but I do not even know the name of what I am looking at.
If it do not exists or is too expensive, I wonder if a simple two-levels only solution could be achieved by printing twice the picture, and then laser cutting one, and sticking it on the top of the other.
Anyone with experience in this?