Finding lines (not straight) in an image

[simes14]

Hello!

I am a student doing a task to inspect for holes in a fish net by using machine vision. I have successfully developed an area-based algorithm but need one more. My struggle is: I am searching for a way to find out if the lines/curves in the net are somehow "not finished". I am struggling because the net is continuous and it is hard to make a particle analysis because of this. Does anyone have an idea of how to do this? I hope I have explained well.

A picture of an example of a net is added here:

[alexderjuengere]

Could you count the nodes of the net and compare this to an expected value?

The Harris Corner Detector

works quite well on chessboards;

https://en.wikipedia.org/wiki/Chessboard_detection

[simes14]

Well, maybe that could be an possibility! The problem is that we are designing machine vision for a dynamic system. The expected value will probably change. Thanks for your suggestion!

[Eric1977]

Could you upload your VI to see what you've done thus far? That way, we'll be able to run your VI and be able to give suggestions.