Vision Idea Exchange

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Additional Overlay Functions

Status: New


I feel there are some IMAQ Vision overlay VIs that would be useful.


1) Get Overlay Groups - Returns an array of Group Names and number of items in the group.


Useful for example - check if "Legend" overlay exists so don't write it again.


I don't see how to tell if overlays are written on top of each other... hence number of items in group (text, line etc) would be useful to look for overlay memory leaks.


Provides a way to tell if any overlays on the image as it returns an empty array if no overlays.


2) Clear Overlay Except

Currently can clear specified overlays, or all overlays, but no way to clear everything except "Legend" overlay unless you create code to keep track of written overlay groups so you know what to clear.