apside wrote:
- is it important to have 1 cam up above the others like in your tutorial?
-what is the best way to place 4 cam (all in front or square, to have an opposite angle ?)
-wearing gloves can help the system ?
-What is the best: running the entire region of interest before "arms or legs corrections"
OR we have to stay front of the screen and put the pause tracking and adjuste the pose ?
-ground shadows are problematic or not, I mean its better to have a bright scene, with ground shadows, or it's better within ground shadows ?
Anyway, thanks a lot for your patience in this forum.
PS: Is there anothers frenchies who use your software ?I would like to create a "French section in your "GENERAL TOPICS"
Hi,
FWIW, here's what I've found based on my own experience with iPi DMC and what I've read elsewhere in these forums.
- Camera Height. Having a camera higher up helps as it gives the system more spatial information to work from. Just don't put all of the cameras up high; I tried this early on and it can make some things better and some things worse. Basically, I place the cameras at various heights above and below eye level. Don't forget to write down the heights of each camera.
- Camera Positions. I've do my setups generally in a 'square' configuration, but not exactly square. I think I read that the cameras should not be directly facing each other, though I'm not exactly sure why. My guess is that some variance in position and angles makes it easier for the system to calibrate camera positions and track data. To be honest, I might be making this up as I don't know where I got this info. :)
- Gloves. All you need is contrast between your hands and clothing, but I read that in the current software gloves don't really make much difference for accuracy. FYI, wearing two different colored gloves absolutely do not help, though some of us wondered if an option to distinguish left and right hands and feet by different glove and sock colors could be added in a future version.
- Ground shadows. Generally speaking, I don't think this is a problem unless the shadows are as dark as your pants and if they cross each other in a camera view. What's more of an issue, in my experience, are floor reflections. I did a test in an environment with a very shiny floor, and seeing the second maglite in the floor affected calibration, and seeing a mirror image of the actor also hurt tracking. To correct this, I had to stamp a clean plate of the floor for all four video streams, which is obviously not an ideal situation.
Hope this helps. At least until official info from Michael is posted. :)
