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  ▸  Values Manipulation  ▸  equalize◀  endian    |    fill  ▶

equalize

Built-in command

Arguments:

Description:

Equalize histograms of selected images.

If value range is specified, the equalization is done only for pixels in the specified
value range.

Default values:

nb_levels=256, value_min=0% and value_max=100%.

Examples of use:

• Example #1

image.jpg +equalize

Command: image.jpg +equalize
Command: image.jpg +equalize

• Example #2

image.jpg +equalize 4,0,128

Command: image.jpg +equalize 4,0,128
Command: image.jpg +equalize 4,0,128
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.