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Any need for depth in multi-Kinect calibration?
https://forum.ipisoft.com/viewtopic.php?f=2&t=9637		 Page 1 of 1
Author:  Greenlaw [ Sun Oct 16, 2016 3:34 pm ]
Post subject:  Any need for depth in multi-Kinect calibration?
I think I already know the question but I wanted to confirm this with the developers:

When using multi-kinect recording and using the 'light' method for calibration (PS Move or Maglite 'candle',) is there any reason to include the depth data? In other words, can I optimize my fps by using only RGB recordings?

I know for motion recording, the RGB channel is optional but I wasn't sure if the opposite was true for calibration recording when using the 'light' method.

I'm going to test this myself in just a minute but just wanted to hear your opinion. Thanks.
Author:  Greenlaw [ Sun Oct 16, 2016 3:36 pm ]
Post subject:  Re: Any need for depth in multi-Kinect calibration?
Oh, never mind--I see that there is no way to record RGB only footage with Kinect in Recorder.

If possible, could this be added as a feature in a future edition?

I'm trying to use a low end laptop for a third Kinect and it's just barely maintaining 30 fps. The laptop is actually working okay but if I could optimize the fps just a little bit more by dropping the depth channel for calibration, it would be ideal.

Or is the depth channel is needed for floor detection? Just wondering.

Thanks for any info!
Author:  vmaslov [ Mon Oct 17, 2016 1:46 am ]
Post subject:  Re: Any need for depth in multi-Kinect calibration?
Hi, Dennis
"Light" calibration method for Kinects uses both depth and color data.
Depth used for the estimation of floor plane and marker position.
Author:  Greenlaw [ Mon Oct 17, 2016 8:19 am ]
Post subject:  Re: Any need for depth in multi-Kinect calibration?
Ah, okay thanks! I thought it might be something like that.

So now my question is, could the list for changing modes (Depth only/Depth with color) be added to the Record Tab?

What I wound up doing is I used Depth With Color for the calibration stage, and switched to Depth Only when recording motions. With the current UI, I need to go backward in the 'wizard' to change modes, but this invalidates my Background Evaluation so I have to re-do that for all three computers. And then, when I was ready to record motions, I had to repeat this for each computer.

I was wondering if having the list accessible in the Record tab might avoid repeating the BG Evaluation step and help streamline the process.

Thanks in advance for any info.
Author:  vmaslov [ Tue Oct 18, 2016 5:39 am ]
Post subject:  Re: Any need for depth in multi-Kinect calibration?
The thing is not in adding/removing controls, but in decision in what situations the background should be reset.
I think we'll consider not resetting the background when switching mode from depth+color to depth with the same resolution.
Author:  Greenlaw [ Tue Oct 18, 2016 8:47 am ]
Post subject:  Re: Any need for depth in multi-Kinect calibration?
Thanks. That would actually be very helpful.
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