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?
Re: Attach coordinates to a video shot at an angle -
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.