G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing
Banner Institutions 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 (2025/08/04)

Reference
Table of Contents  ▸  List of Commands  ▸  Filtering  ▸  convolve_fft◀  convolve    |    correlate  ▶

convolve_fft

Arguments:

  • [mask],_boundary_conditions

Description:

Convolve selected images with specified mask, in the fourier domain.

boundary_conditions can be { 0:Dirichlet | 1:Neumann | 2:Periodic | 3:Mirror }.

Example of use:

image.jpg 100%,100% gaussian[-1] 20,1,45 +convolve_fft[0] [1]

Command: image.jpg 100%,100% gaussian[-1] 20,1,45 +convolve_fft[0] [1]
Command: image.jpg 100%,100% gaussian[-1] 20,1,45 +convolve_fft[0] [1]
Command: image.jpg 100%,100% gaussian[-1] 20,1,45 +convolve_fft[0] [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.