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ok... I've never had many issues before, but I guess there is always a first time..

This is my problem, I'm trying to capture a series of stretching motions, basically I'm sitting on a box and stretch my arms out to my knees. Shouldn't be a big deal..

well, I'm having several problems..

I keep losing tracking on my arms and sometimes my head.

If everything captures ok at first, while capturing I get no reds, everything seems fine. When going into edit mode... everything goes to pot... my arms are out straight, and everything goes generally wonky..

I've tried adjusting my markers, but I basically have them in the same areas I had before with no problems.

I have a dell d630 core duo, 2g ram, so that shouldn't be an issue..

I'm lost... ideas?

files included

Bryan:

Lowering the top upper back marker should help. It looks like it's trying to point the shoulder bones downward beyond their limits and causing the tracking to fail.

Thanks Yoshi..

How did everything else look? What about the problem where it looks like it captures ok.. but when trajectorizing everything is out of kilter...arms straight out.. etc. Will lowering this marker fix that?

thanks!

Having 4 cameras high and 4 low might be better for that kind of motion. It looks like the front hip marker is occluded most of the time. When all cameras are up high, markers are easily occluded if actor leans forward or backward. It's also a good idea to start the capture with T-pose. Also when I have trajectorization problem, I try to have the skeleton posing similar to the initial frame pose, then start trajectorizing.

Yoshi:

Thanks for the help, but I originally had it set up that way, and wasn't getting very good results, which is why I put all the cameras up high.

So, as far as the trajectorization problem... you say to have the skeleton posing similar to the initial frame pose? Do I pose him manually? This problem seems to be hit or miss.. .I can scrub the timeline and sometimes it fixes it, sometimes not. Can I manually move the skeleton to where it should be? I tried that briefly but it snaps back into the position that it wants..

Thanks!

Bryan:

Was it a calibration problem you had with 4 hi 4 low camera setup? You can either manually pose the skeleton or advance to the frame where tracking starts to work.