Well, this is going to look all sorts of weird.
Heh, pretty cool little video here explaining the nuances and tech behind making a kiss cam work well. Not surprisingly though, the kiss cam seems to be just a clever way for arenas and stadiums to make a little money outside of the basketball game occurring on the court. The kiss cam is often branded and part of the jumbotron screen giving couples a 15-second window at fame while also satisfying advertisers with plenty of eager eyes.
If you liked the behind the scenes video above, you might like this video from The Verge posted a few years back about how an entire NFL football game is broadcast.