Extract a Circular ROI

[vineet123]

Message Edited by vineet123 on 01-07-2009 02:17 PM

[vineet123]

thanks for reply,

I am posting the code here....

Vineet

[muks]

Can you post it for lv 8.0 or a screen shot of the vi?

[vineet123]

Hi,

Thanks for the reply. I am posting the code as well as the snap shot of my vi.

Vineet Agrawal

[vineet123]

Hi,

In my code please ignore the first circle detected. I will use that circle also once i get through with one circle.....

Waiting for your reply

Vineet 

[Intaris]

Your Annulus cluster is being wired wrong.

The entries from top to bottom are Center X, Center Y, Radius Inside, Radius Outside......

You are telling it that the radius inside is some value X whereas the radius OUTSIDE (Which must be larger) is zero.

This is where your error is coming from.  Wire the Radius to the fourth terminal from the top and it should work.

Shane.

[vineet123]

a lot of thanks...

I got it right..........

[Chantal]

Hello,

I'm also trying to extract an circular ROI,

after the extraction I want to binarize the image, only my threshold value

moves because of the black background.

Is it possible to onely binarize the extracted circular ROI?

or must it always be a square?

Greetz,

Chantal

[muks]

Do you mean you want an image having the circular part alone in binary format and the rest of the image in grayscale???

Instead of the same image you can extract a circular roi as explained by andrew in this thread and extract the image and apply threshold. The image if extracted will be a rectangle

[muks]

This is what I meant. Circular roi and circular masked region extraction