Representation of the Mona Lisa in "false colors"

It is a compromise between a color image and an infrared image.
Used for a long time within the scope of the silver-based technique by all the experts for analyzing paintings, this technique has been brought up to date for digital photography with Pascal COTTE’s invention.
The colors are totally artificial, but the process makes it possible to obtain a clear color image, the details of which are only visible under infrared light.