Very strange Sample & Hold behavior on image signals

Hello

Here is video fragment on the behavior of my installation of video capture.

IMAQ probes have always worked a little funny to me. It follows from the fact that the wire IMAQ that focus on you is a reference to the image, not the image data itself. So if you change the image above in the code here, this could be the glitter that you see. This node of feedback is to store the reference the previous iteration IMAQ, so if your code does something with this reference the previous iteration IMAQ, then it will appear like this.

Try to create two different IMAQ images with different names and switching between those rather than change your unique IMAQ image reference. You can do it simply with IMAQ copy once you have completed your vision operations. I usually make a copy when I know I want to display an image, but will go back and change the original image during the next iteration.

Tags: NI Software

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