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

Table of Contents ▸ List of Commands ▸ Mathematical Operators ▸ add

◀ acosh | and ▶

add	Built-in command

Arguments:

value[%] or
[image] or
'formula' or
(no arg)

Description:

Add specified value, image or mathematical expression to selected images, or compute the pointwise sum of selected images.

(equivalent to shortcut command +).

Examples of use:

• Example #1

<a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +add 30% cut 0,255

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +add 30% cut 0,255

• Example #2

<a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +blur 5 normalize 0,255 add[1] [0]

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> +blur 5 normalize 0,255 add[1] [0]

• Example #3

<a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> add '80*cos(80*(x/w-0.5)*(y/w-0.5)+c)' cut 0,255

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> add '80*cos(80*(x/w-0.5)*(y/w-0.5)+c)' cut 0,255

• Example #4

<a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> repeat 9 { +rotate[0] {$>*36},1,0,50%,50% } add div 10

Command: <a href="image.jpg" class="highslide" onclick="return hs.expand(this)">image.jpg</a> repeat 9 { +rotate[0] {$>*36},1,0,50%,50% } add div 10

A Full-Featured Open-Source Framework for Image Processing

Latest stable version: 3.6.3 Current pre-release: 3.6.4 (2025/10/29)