Erode node
This documentation is for version 2.1 of Erode (net.sf.cimg.CImgErode).
Description
Erode (or dilate) input stream by a rectangular structuring element of specified size and Neumann boundary conditions (pixels out of the image get the value of the nearest pixel).
A negative size will perform a dilation instead of an erosion.
Different sizes can be given for the x and y axis.
Uses the ‘erode’ and ‘dilate’ functions from the CImg library.
CImg is a free, open-source library distributed under the CeCILL-C (close to the GNU LGPL) or CeCILL (compatible with the GNU GPL) licenses. It can be used in commercial applications (see http://cimg.eu).
Inputs
Input |
Description |
Optional |
|---|---|---|
Source |
No |
|
Mask |
Yes |
Controls
Parameter / script name |
Type |
Default |
Function |
|---|---|---|---|
Size / |
Integer |
x: 1 y: 1 |
Width/height of the rectangular structuring element is 2*size+1, in pixel units (>=0). |
Expand RoD / |
Boolean |
On |
Expand the source region of definition by 2*size pixels if size is negative |
(Un)premult / |
Boolean |
Off |
Divide the image by the alpha channel before processing, and re-multiply it afterwards. Use if the input images are premultiplied. |
Invert Mask / |
Boolean |
Off |
When checked, the effect is fully applied where the mask is 0. |
Mix / |
Double |
1 |
Mix factor between the original and the transformed image. |