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 Post subject: Lower my...grid?
PostPosted: Wed Nov 02, 2011 11:43 am 

Joined: Fri Oct 07, 2011 8:05 am
Posts: 4
So I've calibrated, which all seems to be fine, but when I go to use my saved settings and adjust my 'actor appearance' to move on to actually analyzing for my animation, the actors feet go through the bottom of the 'blue space grid' for the ground.

On the tutorials, the actors feet are always on top of the grid ground..as if he's standing on it.

How do I adjust the 'ground grid' level up or down? Is there a way to adjust just that one setting?


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 Post subject: Re: Lower my...grid?
PostPosted: Wed Nov 02, 2011 4:26 pm 

Joined: Mon Aug 03, 2009 1:34 pm
Posts: 2423
Location: Los Angeles
If a scene is properly calibrated, the ground plane should be where it's supposed to be. In other words you should never have to move the ground.

Which configuration are you using? PS3 Eye, Single or Dual Kinect Sensors? FWIW, I've had very good luck with all three configs but I believe a few users have reported ground plane issues when using the Dual Kinect beta. If you're using the Dual Kinect beta, what's your camera arrangement and how are you calibrating the scene? The developers will need specific info if this is a problem with the software.

G.

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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 10:29 am 

Joined: Tue Nov 01, 2011 1:02 pm
Posts: 9
Adjusting the ground plane should be considered a part of the calibration process.
Auto-calibration is not accurate enough and so manual tweaking of camera and ground plane positioning is necessary to achieve optimal results.

As of version 1.3.1.124, there does not seem to be an easy way to make ground plane adjustments.


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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 10:40 am 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 468
covert wrote:
Adjusting the ground plane should be considered a part of the calibration process.
Auto-calibration is not accurate enough and so manual tweaking of camera and ground plane positioning is necessary to achieve optimal results.


No, no, no!
Manual adjustments are undesirable.


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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 10:53 am 

Joined: Tue Nov 01, 2011 1:02 pm
Posts: 9
I understand that they are not desirable. However, in a world where capture is noiseful and auto-calibration is sub-optimal, I would rather spend time manually adjusting calibration once, than to refit my pose every time tracking fails because of poor calibration. Or maybe I am missing something?


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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 10:57 am 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 468
Automatic calibration has subpixel accuracy. It's impossible to set cameras manually so accurate.

If you have troubles with calibration please share with us your calibration video - it's possible that we can help to fix your problems.


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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 11:15 am 

Joined: Tue Nov 01, 2011 1:02 pm
Posts: 9
Sub-pixel accuracy that is still based on what the algorithm thinks it sees from what the cameras were able to capture. Don't get me wrong, I do use auto-calibration as an initial pass, but when it looks like I am wearing elephant pants and sporting a peanut head, then it is obvious to me that I need to orbit some cameras around. It's OK though -- it only takes a few minutes.

I can upload some of the many examples of poor auto-calibration, but I don't see how that is going to help..

I have done a lot of capture using your software as R&D in the last couple of weeks and this is the production workflow that allows me to deliver clean animations in time. I hope that our upcoming purchase of your software will help you guys grow an application that is making me look like a miracle worker to those project managers who felt like outsourcing to animators.

Good job!


Last edited by covert on Mon Nov 28, 2011 11:25 am, edited 1 time in total.

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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 11:22 am 

Joined: Wed Apr 08, 2009 9:23 am
Posts: 301
Location: White Lake Mi USA
Heres some 180 degree calibration instructions, http://www.youtube.com/watch?v=PszvU4VkUMA

HTH :)


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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 11:26 am 
iPi Soft

Joined: Wed Apr 07, 2010 4:33 am
Posts: 468
covert wrote:
I can upload some of the many examples of poor auto-calibration, but I don't see how that is going to help..


It could help us to improve calibration algorithms.
If you can, please upload one of your calibration video to some file sharing service.

In any case, thanx for feedback.


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 Post subject: Re: Lower my...grid?
PostPosted: Mon Nov 28, 2011 11:30 am 

Joined: Wed Apr 08, 2009 9:23 am
Posts: 301
Location: White Lake Mi USA
He should also use .Rar to compress the blue (depth ) movie for transport if possible.

andrew wrote:
covert wrote:
I can upload some of the many examples of poor auto-calibration, but I don't see how that is going to help..


It could help us to improve calibration algorithms.
If you can, please upload one of your calibration video to some file sharing service.

In any case, thanx for feedback.


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