Morphological function with flat structuring element on 3D images

Hello,

I am using a morphological function (imopen, imclose,....) on a 3D binary volume. I use these functions with a flat structuring element (for example, strel('disk',3)). How are the opening and closing performed on the 3D image. I understand how these functions are applied to 2D images, but since I use a flat (2D) structuring element, how is the function applied? Each slice at a time? What directions?

Thank you in advance for the help.

Duc

Answer 1

[Sean de Wolski]

X = false(11,11,11);
X(6,6,6) = true;

Xd = imdilate(X,strel('disk',3))

implay(Xd);

With three-d ones block:

Xd = imdilate(X,ones(5,5,3))

implay(Xd);

Answer 2

[Duc Fehr]

Thank you I'll check it out.