How to capture drone video for crowd counting

Getting accurate crowd count figures requires a correct process for capturing the video for analysis, here is a step by step guide;

  • Get drone flight clearance (if you haven't already)
  • Focus only on one zone at a time, if you have multiple locations stop the video feed at the end of each zone 

  • Identify all objects in the flight path and their height, making sure that you are able to fly above the object (such as trees)
  • Run a test run to identify how wide the perspective will capture accurately, launch the drone to 30m (70feet), tilt the gimbal to 40-45 degrees. If you find the objects in the distance are hard to identify we suggest you look at flying 2 flights capturing 1 side of the zone and then the other side
  • Split the flight zone into 2 areas, if you have a wide location or zone the AI will only analyse accurately the zone in focus (peripheral objects will have less accuracy)
  • Start the video recording to SD card (DJI Go 4 app as a back up) and in parallel start live stream to your Unleash live account (https://help.unleashlive.com/article/27-live-streaming-from-a-phone-tablet-or-a-drone-for-the-first-time)
  • At 30m (70 feet) and 45 degree camera angle fly sideways at 10ft/s all the way along the length of the zone
  • Stop the video recording for both the live stream and the DJI Go 4 app once you have reached the end of the zone
  • Start a new video recording, live stream and fly back at 30m (70 feet) and 45 degree camera at 10ft/s
  • Stop video recording for both live stream and DJI Go 4 app
  • Note down the time/date of the flights for us to cross reference the video and count
If you have chosen to split the zone into 2 flights repeat the above actions for the second half of the zone
Once you are complete with the flights, review them in your account, select the flights and apply the A.I. algorithm that you intend to use.
  • login into your account and click on the Library page
  • local the video of the video you intend to analyse
  • Select the video clip by clicking the bottom right circle
  • Select the recognise icon from the processing menu
  • Select the A.I. algorithm from the drop down menu
  • Select confirm
  • Your results will appear in the A.I. Clips folder with in your library

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