How to create an image mask from a data received from image processing

[PULSE.Wannabe]

How to create an image mask from a data received from image processing ? 

I have an image that needs to be processed, but when I threshold the object that I want to process, it also threshold the background, so I want mask the background and only have the object (in my case, it's a circular object). I used Image mask before in vision assistant , but it only works for objects that has a same position every time. So what I want to do now is find the circular object's center coordinate, then find its diameter, and finally make a circular shaped mask with the object's diameter and center coordinate.

thanks in advance !

[raphschru]

Hi,

For us to help you, you need to attach at least an example source image and the expected result, and maybe also a VI or a Vision Assistant script with the filters you tried so far.