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IWR1642BOOST: Please tell me about the bubble of the tracking result

koji fukumoto
Intellectual 940 points
Part Number: IWR1642BOOST

Hello.

When tracking is done with "tm_demo" or "tm_play" of the traffic monitor lab,
The snail's trajectory and bubble will be displayed.

What does the size and shape of the bubble mean?
Is it the approximate size and direction of the vehicle?

Thanks.

  • Former Member
    0 Former Member
    Hello Koji,

    The bubble is related to the gating parameters of the tracker. The visualization represents the bounds of the gating function for the tracker. For details on the gating function and parameters please refer to dev.ti.com/.../

    The bubble is actually a 3d bubble representing the bounds for points to be associated to the track in x,y,and doppler (z axis). Roughly, a tracked object with a more disperse point cloud would appear to have a larger bubble.

    Amanda
  • 0 in reply to Former Member
    Intellectual 940 points

    Hello Amanda.
    Thanks for the reply.

    There are two kinds of bubbles, black and colorful.
    (Please see the figure)

    Could you tell me the difference between the two bubbles?

    Thanks.

  • Former Member
    0 Former Member in reply to koji fukumoto
    Hello Koji,

    The outer color bubble is the gating function representation as discussed above while the inner one is the representation of the variance (also in x, y, and doppler).

    Amanda