User Guide

GNU Image Manipulation Program
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15.3.5 Colormap Rotation
15.3.5.1 Overview
Figure 15.25: From left to right: Original image, after applying filter
(a) Original image (b) Filter Color Map Rotation applied
You can find this filter through Filters → Colors → Map → Color Map Rotation.
Colormap Rotation lets you exchange one color range to another range.
15.3.5.2 Main Options
Figure 15.26: Main Options of the ‘Color Map Rotation’ filter
You have there two color circles, one for the ‘From’ color range and the other for the ‘To’ color range: