How to record from two sensors simultaneously?

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How to record from two sensors simultaneously?

hurelyman77
Is there any discussion of this, already? Where?

Also, using the "openni_grabber" example, how would I modify that to record clouds from two sensors at once?

I'm trying to improve the precision of my recordings by getting clouds from two different sensors at the same time, and "averaging" the two together. I'll build a rig that can keep the sensors in exactly the same relative positions, then scan with the whole rig. After some calibration, I should have a known transform that will always align the cloud from one sensor to the other. Then, I can "merge" the clouds together to get a more accurate result.

Only problem is, I don't understand the openni_grabber example very well, so I'm not sure how to add another input to it.

Suggestions?
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Re: How to record from two sensors simultaneously?

hurelyman77
To be clear, I understand the openni_grabber well enough to modify it in other ways, but I haven't done any threading or call-backs in C++, so that's difficult to experiment with.

Is it even possible to record from two sensors at once?
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Re: How to record from two sensors simultaneously?

Jochen Sprickerhof
Administrator
Hi Hurelyman,

* hurelyman77 <[hidden email]> [2015-04-21 15:16]:
> Is it even possible to record from two sensors at once?

It's possible. The openni_grabber even has a parameter to define which
device to use.

Cheers Jochen

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Re: How to record from two sensors simultaneously?

hurelyman77
Oh cool! I somehow overlooked that. I'll see if that leads somewhere...

Thanks