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 Post subject: Foot tracking
PostPosted: Tue Aug 24, 2010 9:10 am 

Joined: Fri Jul 09, 2010 5:46 am
Posts: 37
Location: France
Hi,

On my recent batch of mocap videos, some moves seems to be tricky for iPi. My actor walks and then turns back, but not completely. So his legs are slightly rotated and then he makes gestures with his arms.

One of my cams isn't perfectly placed, so there is some visual occlusion and sometimes iPi inverts the two legs. A few manual tweaks and everything's fixed.

But on "non-problematic" (I mean, not occluded) segments of the session, Ipi has a hard time figuring the correct orientation of the feet. They're correctly tracked and placed "position-wise", but their orientation do not match. See :

Image

It looks more like Ipi tries to guess it, by comparing it with previous frames and the orientation of the torso. Maybe that's how it works ?

Also, black shoes are recommended in the iPi doc. But really, once recorded with webcams, black shoes and jeans seem almost the same color. As I had a middle-grey floor when shooting, wouldn't it be better to have, say white shoes in this case ?


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 Post subject: Re: Foot tracking
PostPosted: Tue Aug 24, 2010 9:51 am 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 380
Hello,

indeed in current version of iPi DMC there is issue concerning foot tracking. We plan to improve foot tracking in a future update.


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 Post subject: Re: Foot tracking
PostPosted: Tue Aug 24, 2010 11:17 am 

Joined: Fri Jul 09, 2010 5:46 am
Posts: 37
Location: France
Thanks for the fast answer, andrew. Would it be any help using white shoes as suggested, or is it just an algorythm problem anyway ?


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 Post subject: Re: Foot tracking
PostPosted: Tue Aug 24, 2010 12:10 pm 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 380
Quote:
Thanks for the fast answer, andrew. Would it be any help using white shoes as suggested, or is it just an algorythm problem anyway?


The second one (algorythm problem).


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 Post subject: Re: Foot tracking
PostPosted: Mon Sep 06, 2010 1:37 am 

Joined: Mon Jun 21, 2010 11:23 pm
Posts: 15
It's really a problem.
I want show details later.
when fix the (algorythm problem)?


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