LabView vision assistant: How to pull coordinates from vision assistant contour analysis

[MyP7]

LabView vision assistant: How to pull coordinates from vision assistant contour analysis

Hi

I’m trying to use labview to find the coordinates for the four edges shown in picture 1, the edges can be descripted as three different 3^rd degree polynomial. I tried using the contour analyzing tool in vision assistant, where I extracted all the edges, but it wasn’t possible to extract the coordinates for each line or even select more than one line, picture 2, without applying a mesh for each line, see picture 3. I need to make the process more automatic, because I have a lot of pictures to process.

In picture 4 you see my Vi.

My question is how do I do it more automatically and how do I get the coordinates for the four edges?

Version of Labview: NI labview 2018 SP1 (32-bit)

[Bob_Schor]

LabVIEW Vision is one of the most advanced, complicated, and under-documented features of LabVIEW that I have encountered.  I recommend that you have at least 6 months (several year is better) experience writing serious code with LabVIEW before venturing into LabVIEW Vision.  You also want to work with at least one colleague with some Vision experience (or be willing to write a lot of little test routines yourself).

You attached some Images.  Picture 1 identifies itself as a 32-bit RGB Image, yet there is no color.  I'd suggest looking for Tutorials and reviewing the Examples that ship with LabVIEW in an attempt to give yourself more experience with NI Vision.  Finding a colleague with whom to work is also a great step forward, even if both of you are relatively inexperienced (misery loves company).

Bob Schor

[MyP7]

Thanks for the reply.

Picture 1 is a snapshot of a .jpg file, since I couldn't upload a .jpg file.

[udka]

You can export the Contour Points Result from Contour Analysis in Select Controls Tab.