IMAQ Find circular edge 3 : result Roundness

[Alain_S]

Hi,

Can someone please explain me the meaning of the "Roundness" result of the vi IMAQ Find circular edge 3?

I know roundness definitions like MCC, MIC and MZC.
Is any of these related to that result?

I get results ranging from 0.1 to over 8 on several images but it's unclear to me how to interprete that result.

Thanks for your insights!

Best regards

[udka · Accepted solution]

Roundness or residual represents the least square error of the fitted circle to the entire set of points. 0 for perfect circle
http://forums.ni.com/t5/Machine-Vision/What-exactly-is-the-roundness-figure-generated-by-IMAQ-Find/m...

[Alain_S]

Thanks for quick and clear answer!

[udka]

If you have any vision specific questions, please post in Machine Vision dedicated board: http://forums.ni.com/t5/Machine-Vision/bd-p/200