4 ms·
This is cool. It seems like the code to encode the grooves over descending depths from, like, a depth map and an image file would be pretty trivial to write. Ju
by noduerme 4y ago
This is cool. It seems like the code to encode the grooves over descending depths from, like, a depth map and an image file would be pretty trivial to write. Just pick random points in 2D representation of the model and vary the radius of the arc based on their depth from camera? I'm wondering... since I know very little about optics or holography... why does this not produce a holographic effect if you just draw those arcs white on black on a monitor? Is it that the light has to be coming from a separate source as a reflection or transparency?
- wbeaty 4y agoThe light coming out of the scratch-hologram must be coherent. That means, the scratches must be mirrors (like smooth grooves, or bent silver wires, shiny curved spiderwebs.) Normal raster-displays emit incoherent light, and their images are entirely located on the display surface. But make your display out of billions of tiny mirrors, then you can create images which float deep inside the surface. (Or hang in the air, outside the surface.)
- pasquinelli 4y agoyeah, it's the glint following those curves that form the image (in contrast with the dark areas.) the curve controls how the glint moves wrt your pov.