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Attach coordinates to a video shot at an angle post and replies

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Attach coordinates to a video shot at an angle
Chang Chen
9 Posts

Hi there!

I noticed that Tracker can only analyze videos taken perpendicular to the moving surface of the object. I would like to ask, if my video is limited by the shooting position and cannot be shot perpendicular to the plane of the target movement, how can I obtain accurate position information?

For example, the field experiments we are doing. The experimenter moved in a straight line in the parking lot, but we had no way to shoot perpendicularly to the ground, so we set up a camera on the roof of a nearby building to shoot downward at a certain angle. How should we obtain the accurate xy coordinate values of the experimenter?

Thanks.

Attached File: Screenshot20240131112931.png


Replies to Attach coordinates to a video shot at an angle

Re: Attach coordinates to a video shot at an angle -
Douglas Brown Avatar
Douglas Brown
449 Posts

You can use a perspective filter to correct the skewed view. See Video Filters in Tracker help.


> I noticed that Tracker can only analyze
> videos taken perpendicular to the moving surface of
> the object. I would like to ask, if my video is limited
> by the shooting position and cannot be shot perpendicular
> to the plane of the target movement, how can I obtain
> accurate position information?
>
> For example, the field
> experiments we are doing. The experimenter moved in
> a straight line in the parking lot, but we had no
> way to shoot perpendicularly to the ground, so we
> set up a camera on the roof of a nearby building to
> shoot downward at a certain angle. How should we obtain
> the accurate xy coordinate values of the experimenter
>
>
> Thanks.



Re: Attach coordinates to a video shot at an angle -
Chang Chen
9 Posts

Thanks! I will try that!



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