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Tracking a plane that rotates

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Tracking a plane that rotates
by Ian Anderson on Oct 30, 2009 at 9:14:58 am

Hey all,
I'm very much a noob to Mocha but i've been really impressed with the first few tracks i've done so far. I'm finding a consistent problem though trying to track a plane that rotates (only roughly 90*). I've uploaded two shots for anyone who might have a minute or two to take a look at here:
http://chillibean.net/~FSEG

They're essentially the same shots, one is a fairly square on shot of an ipod that rotates so the display is landscape as opposed to portrait, the other shot is the same movement but with a phone and angled away from camera.

They're the kind of shots I would've thought Mocha would handle with ease and either side of the rotation I can easily get a pretty stable track. However it's when the object rotates that's when things get funky and surface shape is lost no matter if i track backwards or forwards.

I have tried tracking the thumbs in the shots too as they obscure parts of the objects but it's still the rotation of these things that seems to be thwarting Mocha and myself.

I would be very grateful to anyone who could troubleshoot the shots for me as I may be working on a project where this sort of thing might be a regular occurrence.

Many thanks in advance for your suggestions.
Kindest, ian


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