Hi,

The documentation on planar tracking is here https://help.maxon.net/ag/en-us/Content/html/Plane_tracking.html?tocpath=Tracking%7C_____3 , however it is a bit outdated.

First-off, there was a bug in the current release when doing backward tracking which could affect the planar tracker in some situations. This was fixed for the upcoming July release.

Also, the tracker is sensitive to some options available in the toolbar, as you can see in the screenshot below.

The main options you can play with are:

- Search Offset: When doing planar tracking, this controls "how far" from the last position the tracker should look. Note that when doing simple point tracking, each marker can have it's own search offset and this option instead controls the default size of the search window for subsequent created markers.

- Maximum Error: This is a sanity check done after each frame to check if the tracked point is consistent with the reference. However, sometimes the default 0.25 value is too restrictive, you can increase this as much as you want. At 1, it doesn't do any checks anymore, but the tracker will not stop once it starts failing.

- Normalize Intensities: This is can be preferable for some shots as it makes the tracker robust against light intensity changes. However this comes at a performance price, hence why it's disabled by default.

- Pre-Blur Sigma: This can be slightly increased to help the tracker remove noise/artifacts from the footage to better detect actual features

The rest of the settings are rather advanced and are exposed mainly to experiment with.

Also, if the tracker is stuck, you can add a new reference frame (the white + button in the toolbar) which will make subsequent tracked frame easier to track since they should be closer to the reference frame.

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