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  ▸  Mathematical Operators  ▸  rol◀  rad2deg    |    ror  ▶

rol

Built-in command

Arguments:

Description:

Compute the bitwise left rotation of selected images with specified value, image or mathematical expression, or compute the pointwise sequential bitwise left rotation of selected images.

Example of use:

image.jpg rol 'round(3*x/w,0)' cut 0,255

Command: image.jpg rol 'round(3*x/w,0)' cut 0,255
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.