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Inverting Perspective
Sometimes, in a low-perspective object track, you may see a situation where the object model and motion seem almost correct, except that some things that are too far away are too close, and the object rotates the wrong way. This is called inverted perspective and is a result of low/no/conflicting perspective information. If you cannot improve the trackers or convince the solver to arbitrarily pick a different solution using the counter-measures in the previous section, read on.
The Invert Perspective script on the Script menu will invert the object and hopefully allow you to recover from this situation quickly. It flips the solved trackers about their center of gravity, on the current frame, changes them to seed trackers (this will mess up any coordinate system), and changes the solving mode to From Seed Points. You can then re-solve the scene with this solution, and hopefully get an updated, and better, path and object points. You should then switch back to Refine mode for further tracking work!
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