Back in March, Intel bought a company by the name of Replay[0]. Replay used what they called "freeD" which uses 28 cameras around a sporting arena to capture a "bullet-time" style image. It takes some time to stitch this image together, but they can then use this image to fly around a player in the TV broadcast.

I could see this system using OpenCV to help decide what info is important in the image.

[0]http://www.usatoday.com/story/tech/news/2016/03/09/intel-buy...

edit: forgot to add the link