I would like to keep track of the linear motion of a spring with a webcam and labview vision development module.
Using usb 'IMAQ usb grab.vi ' I could get the dynamic image but there is no way to measure the motion, as far as I know. So, I am trying to use 'IMAQ usb snap.vi' and take one snap picture and measure the displacement per picture with infinite while loop. Does this make sense?
However, the motion using snap.vi and while loop has too late response time than that of using grab.vi. I don't think it looks like real time capture.
Is there any way to improve this response time? Also can I use grab.vi directly to measure the linear motion?
Thanks in advance.
Message Edited by ybell on 10-28-2005 04:20 PM
