Quote:
Originally Posted by polak
How the NHL doesn't have cameras in the posts and a high speed HD camera above the goals is mindblowing.
Why doesn't Hawkeye work again? Seems perfect for this situation? Surely if tournaments like the Rogers cup can afford to have it, a multibillion dollar enterprise like the NHL can fork the bill.
|
To get a clear, sharp look at a fast moving puck you'd need a camera that does >1000 frames per second. For reference, a 100 mile per hour slapshot travels 44 meters per second, so 1000 fps likely isn't sufficient; a 50-100 mph puck would travel 2.2 to 4.4 cm in between frames. There are consumer-ish cameras that will do 10-20K fps, but do so at resolutions around 640 x 480 unless you want to pay high $$$.
Other problems:
- as frame rate increases, light collection decreases and image can become dark and/or fuzzier due to higher ISO.
- the ones that can do high quality at high frame rate aren't small right now and can't be tucked into the posts.
Hawkeye is interesting but there is a relative predictability to the trajectory of a tennis ball. It is allowed to land and complete its arc, so mapping it is more accurate. Hockey puck bounces and gets deflected a lot.
Still a tough problem.