Tracking with the Perspective Grid

You can use the Perspective Grid and its settings to track the grid position, and apply this tracking data to your Action scene. The Perspective Grid acts like an Axis, so you can apply this tracking data to other objects in the scene.

You can perform a simple four corner track of the grid corners in the Tracker, and perform more complex planar tracking of the media using the Perspective Grid's own planar tracker.

To perform 4 corner Perspective Grid tracking:

1. From the Action Perspective Grid menu's Tracking tab, select the media to be tracked from the Use Media field (to stabilize the Back media, select 0).
2. Set your perspective grid corners.
3. Select 4 Corners from the Tracking Mode box.
4. Click the Enter Tracker button.

   The media is automatically loaded into the Stabilizer and the Stabilizer menu appears.

5. In the Stabilizer menu, enable Context to use the Action scene as the reference.
6. Optional: Refine the position the trackers over the corners that you want to track, and click Analyze to generate the tracking data.
   Note: You can fine-tune the tracking data if necessary. See Tracking Difficult Shots and Correcting Errors.
7. Once you are satisfied with the tracking, click Return.

   The Perspective Grid menu in Action reappears. The tracking data is applied to the Perspective Grid media.

To apply planar tracking to a perspective grid:

Planar tracking in Action uses tracking algorithms along with combinations of settings to perform the track. Results can vary depending on the footage, as well as settings applied. See Getting Better Results with the Planar Tracker.

1. From the Action Perspective Grid menu's Tracking tab, select the media to be tracked from the Use Media field (to stabilize the Back media, select 0).
2. Set your perspective grid corners.
3. Adjust any Tracking Settings, as needed.
4. Set any Analysis Constraints, if needed.
5. Click the Analyze button to perform the planar tracking analysis.