top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

Facebook Login
Site Registration
Print Preview

What is the technology behind the 'rev counter' for spin bowlers?

+2 votes
17 views
posted Jul 9, 2016 by Deepak Jangid

Share this question
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

1 Answer

0 votes

The Rev Counter
This technology is used to show the rotation speed of the ball. It is used when spinners are bowling, to show viewers the idea how much each ball is spinning. The technology is also able to show the RPM or revolution per minute through a counter, demonstrating how fast the ball is spinning after release.
enter image description here
Here are two theories:

  • A high speed camera focused on the ball, possibly using the same images that are captured for the Hawkeye system. As a starting point, an upper limit of 3000 rpm gives 50 rps. At normal (at least, as normal as cricket-playing countries get) PAL video rates of 50 fps that's a maximum of 1 revolution per frame, so high speed should easily be able to resolve the rotation. And, of course, there's no guarantee that the figures presented in the image are precise. I suspect the last two significant digits are bogus. Designing such a system, I expect, would be quite challenging, but the problem would be in designating the period and exact area of interest, and doing it in a few seconds.
  • The Doppler Radar that anon mentioned in the other answer. Check out this device: X2 Elite. It is a 3D Doppler tracking radar used in tennis and golf, and possibly in cricket.
answer Jul 11, 2016 by Abhishek Maheshwari
Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#470/147, 3rd Floor, 5th Main,
HSR Layout Sector 7,
Bangalore - 560102,
Karnataka INDIA.
QUERY HOME
...