#Introduction and examples to Rainbow Tonemapping.
Introduction
It is not easy to describe purpose and algorithm behind this plugin. I might say the goal is to create fancy or surrealistic images from your photos. The base explanation is that RGB values (either average of them or each of them separately) are periodically replaced by defined range of colors.
Look at this example:
bottom strip is original, middle strip is to show tonemapping with lenght 80 (three gradients are created within originale lenght 255) and border colors are black and white.
Upmost strip is example with smaller new gradient lenght and custom border colors (shade of red and yellow).
This example corresponds to 1-band tonemapping option.
If you use 3-band tonemapping (reccomended), each of RGB channels is treated separately and you will get more colorfull output.
Plugin window look like this:
and can be found at FILTERS/ARTISTIC/RAINBOW TONEMAP
Examples