1. The videos show these flying pixels in a grid using variable output to form images like the Mona Lisa -- but a perhaps more interesting possibility is using

1. The videos show these flying pixels in a grid using variable output to form images like the Mona Lisa -- but a perhaps more interesting possibility is using them for non-uniform sampling of an image. Imagine all of them emitting max light output, and having none of them fly in the black areas of the image, and the highest concentration in the brightest areas. 2. This could be a basis for free-floating advertisements or information. Imagine walking around a giant outdoor mall (like the labyrinthine Irvine Spectrum) and having pixels appear above you announcing that the next IMAX 3D showing of Avatar is coming up, forming into a giant floating arrow saying RIGHT THIS WAY and floating towards the theater at walking pace.