Almost Real Time Image Processing

[aderogba]

What is the best way to implement almost "real - time" image processing with two usb cameras? Capture, Process, Display results then capture, process, etc until I choose to stop the program. I am using LV 8.6 with vision development module. What function do I need to use to capture image?

[A_Person · Accepted solution]

With LabVIEW 8.6 you can get the NI-IMAQ for USB Cameras driver.  

I'm not sure if you're looking for anymore information than that, but let me know if you have more specific questions I can help with.

Message Edited by A Person on 09-02-2009 02:05 PM

[isaoz]

I am not sure where the best forum would be to post this. I basically need to design a low cost eye tracking system using a 1394 or usb camera fairly quickly. I was hoping to adapt some of those machine vision VIs that measure size, distance, length etc. to measure the position of the eyes from a live full head image in real time, say at 10fps. Can you give me hints as to where I should post the question, where I can find example codes and how quickly I can do it if it is possible? I use Labview 8.5 and have NI Vision and Vision Assistant 8.5.

[A_Person]

This is the forum you want to use if you are going to be asking questions about using Vision functions although you may want to start your own thread.

For examples, you can find a lot through the LabVIEW Example Finder.  Open it through Help»Find Examples...  Then you can search for vision or circle or browse through Toolkits and Modules»Vision»Applications.  One in particular that might be helpful is Circle Distance Example.  In addition to the examples, there is a lot of documentation installed with Vision.  You can find it in your Start menu programs under National Instruments»Vision»Documentation»NI Vision.

Those are probably the best places to start looking.  Otherwise, start playing with the code and post to the forum with specific questions.  It's pretty difficult for us to provide advice on getting started on an application but you can generally get pretty good, responsive help for specific problems.