Georgia Tech professor David Citrin is revealing the secrets of 17th century artists thanks to 21st century signal processing. Using modern high-speed scanners and the advanced signal processing techniques, researchers at the Georgia Institute of Technology are peering through layers of pigment to see how painters prepared their canvasses, applied undercoats, and built up layer upon layer of paint to produce their masterpieces.

 

For more details please read https://www.sciencedaily.com/releases/2017/11/171121095138.htm or their paper at https://www.nature.com/articles/s41598-017-15069-2