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



Latest stable version: 3.5.5        Current pre-release: 3.6.0 (2025/08/04)

Reference
Table of Contents  ▸  List of Commands  ▸  Artistic  ▸  halftone◀  glow    |    hardsketchbw  ▶

halftone

Arguments:

  • nb_levels>=2,_size_dark>=2,_size_bright>=2,_shape={ 0:Square | 1:Diamond | 2:Circle | 3:inv-square | 4:inv-diamond | 5:inv-circle },_smoothness[%]>=0

Description:

Apply halftone dithering to selected images.

Default values:

nb_levels=5, size_dark=8, size_bright=8, shape=5 and smoothnesss=0.

Example of use:

image.jpg halftone ,

Command: image.jpg halftone ,
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.