acquisition of start button

Hello, I use Labview development Vision module to control a camera high speed for my project. In my project, I capture images as in streaming video, convert images in binary images and calculate the number of particles in this (measure in pixels) image by making the analysis of the particles. I enclose my VI for a better understanding. Now my VI works well, but with a lag. If more arrived this shift I made a few changes. Already my image acquisition and processing both took place in a while loop, so I separated acquisition and transformation in two different while loops. But now the problem is that I can continuously acquire the images and VI doesnot go to the second whileloop of image processing. My question is can I put some sort of 'start' in the first while loop so that when I press this button the my analysis of the image of the second star of loop. If yes than how.

Thank you.

I suggest first that you try to run your program using a local variable simple (I think that this method should be sufficient for your application):

create image indicator display on the front panel, connect it to your function (output of the image) and right click-> Create-> local variable (if you don't want the indicator image to display on the front panel, you can hide it).

Pass this local variable created in the processing loop. Allocate new memory for the image in the loop of treatment ('Image Dst', Local threshold).

In addition, synchronize loops using the timing functions (shown in the example link in previous post). From my experience, it is always good to apply some delay in your loop (this should give the processor any time to breath...).

You need a button to stop the two loops...

Best regards

K

Tags: NI Hardware

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