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masking and motion tracking a dancer, Color, Motion, DaVinci...

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Seth Thy
masking and motion tracking a dancer, Color, Motion, DaVinci...
on Mar 6, 2011 at 9:52:27 am

Hi guys,

I'm trying to solve this for 2 weeks now and getting nowhere... :-/

I have few short clips (10-20 sec each) of a guy dancing in room, it was edited in Apple Pro Res (HQ).
In background there are different things (wall, pictures, furniture) and background is the same in all clips, camera is still, only thing changing is his body in motion and he changes his costume in every clip.

My job is to color grade shots and to mask him out because I need to grade him differently (a bit warmer on skin) and from time to time to apply a Bad TV filter (on of FCP filters) on him.

First I did overall grading in Color. At first I thought of masking him in Color, use Motion tracking and grade him, but I didn't know how to achieve BAD TV filter in Color so I sent in back to FCP and than sent it to Motion for masking, additional color grading and to apply filter.

I drew one mask for whole body, and since he's holding his palms on hips, 2 smaller (subtract) masks for a shapes between his arms and body.
And now I "only" need to motion track it.

I tried with Shape Track Points, but a lot of trackers, especially around his arms a loosing their track points. I tried even to fix them manually frame by frame but some of them are stopping after few frames and I don't know how to add them new "track points" on later frames, so that part of mask is just staying where they stopped. And it is really time consuming...

I event tried Analyze Motion and than Match Move but that didn't get me anywhere...

I don't know what I'm doing wrong... I now it would be easier if they filmed it in front of blue screen, but they actually showed me things they used to do earlier shot in the same way but I think it was done in DaVinci.

Is there something I can do? I'm working in Motion 3, maybe in Motion 4 tracking is better? Should they get DaVinci?
I never worked on DaVinci so I don't know what can be done in it but maybe the problem could be me using FC Studio the wrong way and not in DaVinci superiority over FCStudio, if there is such a thing...

Tnx

Seth

PowerMac 2x2.66 GHz Dual-Core Intel Xeon
5GB 667 MHz DDR2 FB-DIMM
NVIDIA GeForce 7300 GT
AJA Kona LHe
Apple Color 1.02


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