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

Reference

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

◀ negate | noise_hurl ▶

noise

Built-in command

Arguments:

amplitude[%]>=0,_noise_type

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

<a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +noise[0] 50,0 +noise[0] 50,1 +noise[0] 10,2 cut 0,255

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +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.