## Tonemapping operators reference

Luminance HDR is based on pfstmo backend that implements algorithms from published scientific papers on HDR imaging. Most HDR tools are based on these papers, but Q is kind of different in a way that it actually uses terminology from the papers. Which means that if you are not a PhD in color science, you need a good explanation, otherwise you are lost.

This section helps understanding underlying algorithms and explains how to better use a particular tonemapping operator.