Peoria (WEEK) -- The man credited with "de-coding" the Mona Lisa explained his process at an event at the Riverfront Museum Friday.
Pascal Cotte, a French engineer, developed software that illuminated Leonardo Da Vinci's first passes at the painting. It's called the Layer Amplification Method, or LAM.
Cotte says his work illuminated hoe meticulous Da Vinci was when he painted. "A work of art is a work," Cotte says. "It's a big work. To understand that even leonardo can make a wrong. Even leonardo can start a project, erase is, restart again, redo it again, restart "
PBS NOVA featured his work in their special, titled "Decoding Da Vinci."
The exhibit at the museum runs through March 22.