If the initial auto tracking does not give desired results, you can use some or all of the Filter options to calibrate and refine your track analysis. These procedures are not necessarily required, but depending on your image and the initial tracking, may give better tracking results.
To fine-tune the 3D auto track:
Trackers of lower quality may hinder the accuracy of the camera tracking.
A tracker may or may not be added, depending on the ability of the track analysis algorithm to find an appropriate feature to track in this area.
For example, an element leaving the scene at frame 28 and returning at frame 50 may result in two different trackers attached to the same element in the image. In this case, select the trackers and click Link to teach the algorithm that these trackers are the same.
To refine or calibrate the 3D track:
(a) Refine button (b) Pixel Error value
The track analysis uses the current results as a starting point, and refines from this point.
Click Refine again to stop the process once an acceptable pixel error value is reached. The pixel error value is a representation of the distance of the 2D tracks from the repositioned 3D points.