Specifies the direction of the operation for the Dilate and Erode methods.
| Member | Value | Description |
|---|---|---|
| SF_LEFT | 1 | Dilate or Erode Left. |
| SF_RIGHT | 2 | Dilate or Erode Right. |
| SF_UP | 4 | Dilate or Erode Up. |
| SF_DOWN | 8 | Dilate or Erode Down. |
| SF_ALL | 15 | Dilate or Erode All Directions. |
