GMIC

Compiling GMIC on Linux Mint Debian Edition 2

Running a self compiled version of Gimp in parallel to the version from your distribution works fine until you try to use it with high-bit depth version of GMIC.

The following instructions for GMIC will help you to prevent /get rid of the following error:
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Comparison of highpass filters in GIMP and GMIC

GIMP Icon

When it comes to sharpening an image, a popular alternative to the unsharp mask is the high pass filter. To apply this method, you create the high pass version of your image in a new layer and set its blend mode to overlay. Applying a layer mask allows you to restrict sharpening to certain regions of the image.
 
Unfortunately gimp does not provide the high pass filter out of the box. You either need to install gmic or the high pass plugin.
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