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: 3.3.4        Current pre-release: 3.3.5 (2024/02/22)

Reference

Table of Contents  ▸  List of Commands  ▸  Values Manipulation  ▸  noise◀  negate    |    noise_perlin  ▶

noise

Built-in command

Arguments:

Description:

Add random noise to selected images.

noise_type can be { 0:gaussian | 1:uniform | 2:salt&pepper | 3:poisson | 4:rice }.

Default values:

noise_type=0.

Examples of use:

• Example #1

image.jpg +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255

Command: image.jpg +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255
Command: image.jpg +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255
Command: image.jpg +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255
Command: image.jpg +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255

• Example #2

300,300,1,3 [0] noise[0] 20,0 noise[1] 20,1 +histogram 100 display_graph[-2,-1] 400,300,3

Command: 300,300,1,3 [0] noise[0] 20,0 noise[1] 20,1 +histogram 100 display_graph[-2,-1] 400,300,3
Command: 300,300,1,3 [0] noise[0] 20,0 noise[1] 20,1 +histogram 100 display_graph[-2,-1] 400,300,3
Command: 300,300,1,3 [0] noise[0] 20,0 noise[1] 20,1 +histogram 100 display_graph[-2,-1] 400,300,3
Command: 300,300,1,3 [0] noise[0] 20,0 noise[1] 20,1 +histogram 100 display_graph[-2,-1] 400,300,3
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.