B1 | What does "reduced confidence" mean ?

The TrackMan B1 is an optically enhanced dual radar system that uses both video from the built-in camera and radar signals to track the full ball-flight - from release to crossing the plate. Our tracking algorithms then combine these different sources to measure and calculate the ball-tracking data known from https://trackmanbaseball.com

Subject to environmental conditions, one or more data elements may be measured with "reduced confidence" which is indicated with a gray triangle next to the data in the iOS App dashboard. This means the risk of the data being an outlier is higher than usual. Reduced confidence is tightly linked (but not exclusively) to how good both radar and vision tracking is – particular in the region(s) most relevant for a specific data-set. For example:

  • If tracking closer to rubber is subpar, release data will have reduced confidence.
  • If tracking closer to home-plate is subpar, location data will have reduced confidence.
  • If the ball hits the ground prior to crossing Home plate, all location and breaks will be reduced confidence or not measured.

Some examples that result in subpar tracking:

  • Multi-layer netting in front of TrackMan which obstruct view of ball for substantial parts of the flight time
  • Netting that moves significantly during ball flight
  • Poor lighting, people or general FOV blockage/obstructions between TrackMan and the ball.

Some actions to counter reduced confidence:

  • Minimize the obstructions for the camera/vision - if necessary offset the Trackman left/right from home plate to have clear sight of all of release and home.
  • Avoid radar noise sources, such as fluorescent lights, big solid objects (esp. metal) close to radar/camera FOV and tracking volume, bladed fans etc.If netting is needed, only use single non-metallic netting. 
    • Proper lighting is needed indoors, preferably no fluorescent lights in range of 50-60Hz. When possible use LED or halogen lighting indoor.



Was this article helpful?

0 out of 0 found this helpful

Have more questions? Submit a request