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: 3.3.5        Current pre-release: 3.3.6 (2024/03/28)

Reference

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

convolve

Built-in command

Arguments:

Description:

Convolve selected images by specified mask.

boundary_conditions can be { 0:dirichlet | 1:neumann | 2:periodic | 3:mirror }.
channel_mode can be { 0:all | 1:one-for-one | 2:partial sum | 3:full sum }.
interpolation_type can be { 0:nearest-neighbor | 1:linear }.

Default values:

boundary_conditions=1, is_normalized=0, channel_mode=1, xcenter=ycenter=zcenter=(undefined), xstart=ystart=zstart=0, xend=yend=zend=(max-coordinates), xstride=ystride=zstride=1, xdilation=ydilation=zdilation=1 and interpolation_type=0.

This command has a tutorial page.

Examples of use:

• Example #1

image.jpg (0,1,0;1,-4,1;0,1,0) convolve[-2] [-1] keep[-2]

Command: image.jpg (0,1,0;1,-4,1;0,1,0) convolve[-2] [-1] keep[-2]

• Example #2

image.jpg (0,1,0) resize[-1] 130,1,1,1,3 +convolve[0] [1]

Command: image.jpg (0,1,0) resize[-1] 130,1,1,1,3 +convolve[0] [1]
Command: image.jpg (0,1,0) resize[-1] 130,1,1,1,3 +convolve[0] [1]
Command: image.jpg (0,1,0) resize[-1] 130,1,1,1,3 +convolve[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.