SharpenInvDiff node


This documentation is for version 2.0 of SharpenInvDiff (net.sf.cimg.CImgSharpenInvDiff).


Sharpen selected images by inverse diffusion.

Uses ‘sharpen’ function 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


Input Description Optional
Source   No
Mask   Yes


Parameter / script name Type Default Function
Amplitude / amplitude Double 0.2 Standard deviation of the spatial kernel, in pixel units (>=0). Details smaller than this size are filtered out.
Iterations / iterations Integer 2 Number of iterations. A reasonable value is 2.
(Un)premult / 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 / maskInvert Boolean Off When checked, the effect is fully applied where the mask is 0.
Mix / mix Double 1 Mix factor between the original and the transformed image.