LabVIEW
usb webcamera as a feedback
Hey Khalid,
My name is Alex and I'm an Applications Engineer from National Instruments. I wasn't able to completely open the VI you uploaded, it appeared to be missing a few custom SubVIs. However, as a broad introduction, there are quite a few things we need to think about when we're trying to capture images in LabVIEW. i.e.
- What kind of camera you're using?
- What's the type of interface?
The reason I ask this is because we'll need to base our use of the NI-IMAQ or NI-IMAQdx drivers in order to construct an appropriate programmatic interaction with the camera from within LabVIEW. With either of these installations, I'd recommend checking out the NI Example Finder for code which you can use as a great starting point for getting your acquired images into LabVIEW.
<LabVIEW> » Help » Find Examples... and perform a quick search for 'Grab'. This shows us how to successfully acquire a continuous stream of information from the camera.
There are also some great online examples that you can reference.
However, I might be jumping the gun a little. We have to make sure that we can first communicate properly with the camera and make sure the interface is set up so that we can actually grab some data. Have you managed to get to this point?
As for feedback, can you expand a little on what kind of interaction it is that you require?
Kind Regards,
Hi Khalid,
What's the specific problem that you're having with your code at the moment? All of this code looks sensible to me; is there a particular function that isn't working in the way that you had expected it to?
Kind Regards,
Hi Khalid,
Is the issue with the application that the values of Output Color and Desired Color aren't matching properly? Would it be possible to give any values of the example output? Sorry that I keep asking questions; it's just at this point I'm still struggling to understand what the particular stumbling block you've hit with your application is!
Kind Regards,
