-h | Help, prints usage message. |
-o | Structuring element object type specified by an integer value:
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-r | Structuring element radius. |
-s | Structuring element sub-type specified by an integer value:
0 | 8-connected (2D) |
1 | 4-connected (2D) |
2 | 6-connected (3D) |
3 | 18-connected (3D) |
4 | 26-connected (3D) |
5 | octagonal (2D) |
6 | Euclidean (2D and 3D) |
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-t | Structuring element type specified by an integer value (Liang naming):
0 | h4 - 4-connected (default) |
1 | ex4 - (111)(010)(111) |
2 | a8 - 8-connected |
3 | h6 - 6 combinations of 2 missing corners |
4 | h5 - 4 options of 3 missing corners |
5 | h7 - 4 options of 1 missing corner |
6 | a3 - 4-connected, 4 options of 1 missing side |
7 | e1 - (000)(011)(000) |
8 | e2 - (000)(111)(000) |
9 | v2 - (010)(010)(010) |
20 | single pixel object |
21 | circle object |
22 | sphere object |
23 | standard structuring element - uses distance type (sub-type), radius and otype |
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