Fig. 3

Comparison of pigment labeled maps. a Color image of Master of the Dominican Effigies, Pentecost, about 1340, The J. Paul Getty Museum, Los Angeles, Ms. 80, verso. Digital image courtesy of the Getty’s Open Content Program. b Table of pigment labels for the truth map (refer to Additional file 1: Table S2) and the 1D-CNN map. c Truth pigment map. d 1D-CNN map