Ars explains the technology behind the Super Bowl broadcast. Having not watched much football in a while I was particularily intrigued recently by the virtual first down line and the overhead “cablecam” shots that are used in modern football broadcasts. This article explains how they work.
Aside
Nifty! I’ve long wondered how exactly the first down line was done. At first it seems such a simple task, but then you have to take angles, zoom, field irregularities, and players/obstacles into account…