Description

looking at the figure in #4528, it let me realize that the size of the structuring elements are a bit inconsistent, a fact I was not particularly aware of.

My use case is the following: while doing some processing, we might want to change the size and the shape of the structuring element. For instance, changing from square to circle, the user must be cautious to apply a factor two to get the same typical size.

Personally, I find this annoying.