G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing
GREYC CNRS ENSICAEN UNICAEN

A Full-Featured Open-Source Framework for Image Processing

Latest stable version: 3.5.5        Current pre-release: 3.6.0 (2025/07/18)

Reference

Table of Contents  ▸  List of Commands  ▸  Filtering  ▸  sharpen◀  rolling_guidance    |    sharpen_alpha  ▶

sharpen

Arguments:

Description:

Sharpen selected images by inverse diffusion or shock filters methods.

edge must be specified to enable shock-filter method.

Default values:

edge=0, alpha=0 and sigma=0.

Examples of use:

• Example #1

image.jpg sharpen 300

Command: image.jpg sharpen 300

• Example #2

image.jpg blur 5 sharpen 300,1

Command: image.jpg blur 5 sharpen 300,1
G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing

G'MIC is an open-source software distributed under the CeCILL free software licenses (LGPL-like and/or
GPL-compatible). Copyrights (C) Since July 2008, David Tschumperlé - GREYC UMR CNRS 6072, Image Team.