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[Ask Help] - Find Result Erode/Erosion on Matrix

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Hilmi
Hilmi on 9 Dec 2022
Closed: Hilmi on 10 Dec 2022
Please..Anyone could help me?
I've script and matrix 20x20 below, and i would like to search Erode/Erosion.
=================================================================================================
=================================================================================================
a = [1 1 1 0 0 0 0 0 0 0 1 1 1 0 0 1 1 1 0 0;
1 1 0 0 1 0 1 1 1 0 1 1 1 0 0 1 1 1 0 0;
1 1 1 1 1 1 0 1 1 0 0 1 0 0 0 0 1 0 0 0;
0 0 0 1 1 0 1 1 1 0 1 0 1 0 0 0 0 0 0 0;
0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 1;
0 0 1 1 1 0 1 1 1 0 1 0 0 0 1 0 0 0 1 1;
1 0 0 0 1 0 1 1 0 1 1 1 0 1 1 1 0 1 0 1;
1 1 0 1 1 1 1 0 1 0 1 0 0 0 1 0 0 0 0 1;
1 0 0 0 1 0 0 1 0 0 1 0 0 0 0 0 1 1 1 0;
0 0 0 0 0 0 1 1 1 0 0 1 1 1 0 0 0 1 0 0;
0 0 0 0 0 1 0 1 0 0 0 1 1 1 0 0 1 1 1 0;
0 1 1 0 1 0 1 1 0 0 0 1 1 1 1 0 1 1 1 0;
1 0 0 1 0 0 0 0 1 1 1 0 0 1 0 0 0 0 0 0;
1 1 1 0 0 0 0 0 1 1 1 0 1 1 1 0 0 0 0 0;
0 1 1 1 0 1 0 0 1 1 1 0 0 1 1 0 0 1 1 1;
0 1 1 0 0 1 0 0 1 1 1 0 1 1 1 0 0 1 1 1;
0 0 0 0 1 1 1 0 0 0 1 0 0 0 1 0 1 1 1 1;
1 1 0 0 0 1 1 0 0 1 1 1 0 0 0 1 0 0 1 0;
1 1 1 0 0 1 0 0 0 1 1 1 0 0 1 1 1 0 0 0;
1 1 0 0 0 0 0 0 0 1 1 1 0 0 1 1 1 0 0 0];
b = [1 1 1;
0 1 0;
1 1 1];
bero = imerode (a, b);
a % show matrix a
bero % show matrix final result after dilation
=================================================================================================
=================================================================================================
But f I think logically, it seems the results are not appropriate.
On this image.

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