Limitations of Cameras with the myRIO

[jinfonetang]

Hi,

I'm building a photometric stereo system using the myRIO. 

As the myRIO has a USB 2.0 port, it has a limited bandwidth of 50Mb/s as shown in the following link.

I understand that some USB 3.0 cameras are compatible with the myRIO however the USB 2.0 limitations still apply.

How much bandwidth would I get using an IP camera? 

Or even a GigE camera? (GigE camera would be the last resort, as I would not want to be losing any data if it were to communicate over UDP).

Thanks.

[JarmoLE]

Hello jinfonetang,

By what I did some research typically the IP cameras stream at rates of 10Mb/s. Also note that the IP cameras from Bassler or Axis are supported by MyRIO as described in the beginning of this article:

http://digital.ni.com/public.nsf/allkb/F6C8900A69CEA9B986257C9E0064B02F

So the GigE camera would be the best option if streaming is concerned. But with using the NI-IMAQdx the stream rate could go to 120Mb/s only, the 125Mb/s is the optimal maximum.

This is described here in chapter 4:

http://www.ni.com/white-paper/5651/en/#toc4

How much streaming capability are you expecting from your application?

Best regards,

Jarmo Levo

Applications Engineer

National Instruments

[jinfonetang]

Hi Jarmo,

Thanks for your response. My only concern with a GigE camera is that it communicates using UDP. 

I am unsure how much streaming capability I require, but I believe it will be over 50Mb/s. 

But if GigE is the only option, then I guess I have no choice.

Thanks for all your help!

[chris_1243]

Hans, I'm looking at using Labview for a 4-image photometric stereo application. Would you care to share the VIs for the algorithm you implemented?

[jinfonetang]

Hi Chris,

Unfortunately due to a change in the scope of the research project, MATLAB was used for the project instead of LabVIEW.

If this would still be useful to you, I'd be happy to pass it on!

[chris_1243]

Yes, please pass it on. Thanks!

-Chris

[jinfonetang]

Hi Chris,

Hope this helps.