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

A Full-Featured Open-Source Framework for Image Processing

Home
News
Download
Resources
- Technical Reference
- Scripting Tutorial
- Video Tutorials
- Wiki Pages
- Image Gallery
- Color Presets
- Using libgmic
- G'MIC Online
Community
- Discussion Forum (Pixls.us)
- GimpChat
- IRC
Report Issue

Latest stable version: 3.5.5 Current pre-release: 3.5.6 (2025/06/16)

Reference

Table of Contents ▸ List of Commands ▸ Values Manipulation ▸ negate

◀ mix_channels | noise ▶

negate

Arguments:

base_value or
(no arg)

Description:

Negate image values.

Default values:

base_value=(undefined).

Example of use:

image.jpg +negate

Command: image.jpg +negate

Command: image.jpg +negate

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.