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Monitoring Tracking
As you track through the shot, you want to be watching carefully to make sure that the mesh stays locked to the image appropriately. A wire-frame view will be most informative for that (or a greatly reduced opacity).
You can watch the error curve mini-view at bottom-right of SynthEyes to get an ongoing view of tracking error. The error curve for a GeoH-tracked object is a percentage value running from 0% to 100%.
Tracking may be lost or corrupted due to various factors. Items such as
- a non-matching model;
- an incorrect field of view; or
- lens distortion (or worse, rolling shutter)
should be addressed previously as part of the setup process.
Other factors need to be addressed during tracking, such as
- changes in lighting or minor un-modeled geometry, manifested as drift;
- occluding objects, such as fingers, actors, poles, etc;
- bumps in the imagery or final path;
Each of these issues must be addressed specifically.
©2023 Boris FX, Inc. — UNOFFICIAL — Converted from original PDF.