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Complete control via USB of webcam or digital camera

Hi,

After searching in the forum and over internet, I finally decide to post my question.

 

I'm looking forward to control a webcam via usb with Labview 8.5. I want to be able to have a full control over the camera settings, particularly for acquisition. I also need to acquire the raw image or raw data composing the image. So I can't afford any degradation of the image by any out of control process. I think that the NI-IMAQ software is not really suited for my requirements right? 

 

As I don't have the Vision package, I thought that I should build my own driver with NI-VISA. In fact I did it and I think it is working well. I'm able to see all the properties of my webcam with a simple VI.

 

But then come the question: how can I acquire images and control the settings. The company told me that they are using generic UVC (USB Video Class) and that no custom commands were used. I downloaded all the information on the USB-IF website, but it seems to me that there is still something I don't understand to get going...

 

Is there anybody who can please help me with that problem? Any simple example would be very welcome...or any other solution.

 

After controlling a webcam, my ultimate goal would be to control a digital camera...I suppose this should be pretty similar...

 

Thank you very much for your help,

Frank

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Hello,

 

If your camera is DirectShow compliant, IMAQdx from Vision Acquisition Software 2009 already provides support for USB cameras. This is described on this page: http://zone.ni.com/devzone/cda/epd/p/id/5030 as well as in the release notes for the software.

 

-Zach

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Thank you for your answer. Unfortunately, I'm searching for a solution not using without IMAQ and the Visionpackage. Any idea?

 

If someone has ever controlled anything under UVC standards I would be more than happy to see a VI example.

 

Thank you!

Frank

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