How do I perform 3-D erosion on volumetric image data with Image Processing Toolbox 5.0.1 (R14SP1)?

I have a set of of binary images representing a volume. I would like to erode the volumetric image in 3 dimensions.

Answer 1

[MathWorks Support Team]

To perform three-dimensional erosion, use the Image Processing Toolbox function IMERODE.

For example, to erode the set of volumetric binary images "V" in 3-dimensions, perform the following steps:

1. Create a 3-dimensional structuring element

[xx,yy,zz] = ndgrid(-5:5);

nhood = sqrt(xx.^2 + yy.^2 + zz.^2) <= 5.0;

2. Execute the IMERODE function with the 3-D structuring element.

V2 = imerode(V,nhood);