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Tracing object trajectory through a photocamera

  1. Sep 29, 2016 #1
    Hi all,

    I need to trace the trajectory of a moving object. The object are yellow and opaque while the background is grey. Since I'm interested in the shape rather than the exact coordinate, I'm wondering if I could use the light painting principle to impress on a photo the trajectory. How could I do it? By painting the object with any reflective paint? Any suggestion is welcome.

    Thanks
     
  2. jcsd
  3. Sep 29, 2016 #2

    CWatters

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    One way might be to make a video and put tracing paper over the screen. Play the vid and mark with a pencil.

    There are probably some programs out there that will do motion detection for you and add a trail to the path of the moving object.
     
  4. Sep 29, 2016 #3
    Keep the shutter open.
    You could also use a strobe light for multiple exposures while the shutter is open.
     
  5. Sep 29, 2016 #4
    @Tom G. great idea the stroboscope!

    @CWatters: is there any way to mark a video? My desire is to adopt a motion detection algorithm
     
  6. Sep 29, 2016 #5

    CWatters

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