How it works
First the surface is measured, usually with a 3D scan or a precise survey. Artists then build the video around that model, so every window, column and edge has content made for it. On site, projectors are lined up and the image is warped and blended until it sits exactly on the surface.
A media server plays the content and keeps several projectors in sync. On large facades, the image is split between many projectors, overlapped at the seams and blended so it reads as one picture.
Good to know
- Brightness matters more than anything else. Bigger surfaces and more street light mean more, or brighter, projectors.
- Light, smooth surfaces work best. Dark stone, glass and busy textures swallow light and need extra power.
- Content is made for one specific surface, so allow time for design, previews and sign-off before the projectors arrive.
- Projectors need stable, weather-protected positions with a clear line to the surface.
