How to use Colour pattern matching with a webcam

Hi,
I have a web cam which I am able to use successfully in labview (i.e.. Get images)
I have looked at the colour pattern matching examples and tried to modify them, so that I can detect a red spot, that can be seen through the webcam, but have been unsuccessful.
In essence I'm trying to do real time colour pattern matching
Can anyone steer me in the right direction? Or help me out?
Thanks
Solved!
Go to Solution.

Hi kr121,
I'm trying to work on color myself right now.
What have you tried so far? What type of web camera are you using? I'm using a Microsoft Life Camera with LV 2011 on Windows 7.
I started here: http://zone.ni.com/devzone/cda/epd/p/id/5030
If you are not using an NI camera I was able to get this to work using the cmd prompt and extracting the files manually to at least run the NI-IMAQ for USB: Snap and Save Image with USB Camera and NI-IMAQ for USB: Grab and Save Image with USB Camera examples.
The command prompt command is:
ni_imaq_usb_installer_86.exe /x
Don't know if this is 100% correct but it at least allowed me to capture images and avi's.
Regards,
-SS

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I am new to LAbView and currently I am working on colour pattern matching with USB snap. My problem is this program keep prompt me on the IMAQ Learn Colour Pattern. I need someone to help me solve that problem.
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Message Edited by Chee Hou on 09-16-2009 03:46 AM
Attachments:
Untitled.vi ‏189 KB

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Have you tried to run the example to do color pattern matching?
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problem in matching while object moves far.png ‏515 KB

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I have not been using the color pattern matching a lot (especially not in real-time). But since the pattern matching considers only small scale changes, you could try updating the color template every n-th iteration (depending on your setup and requirements). The major problem is the template size, since the color pattern matching tends to take quite a lot of time in learning the template. You would of course need to come up with some idea on how to change the subimage size, where the new template will be learned.
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