Three endmember extraction methods (NFINDR, NMF and manual extraction) are compared in two stages (pre- and post- intervention) of the same painting, a Maternity on copper plate, under study for the formulation of a hypothesis on the authorship and the dating. The endmembers are extracted from spectral images in the 400-1000 nm range. The main aim is to determine if simple automatic endmember extraction is enough for pigment and re-painted areas identification in this case study.
Ana B. López-Baldomero, Miguel A. Martínez-Domingo, Javier Hernández-Andrés, Rosario Blanc, J. L. Vilchez-Quero, Ana López-Montes, Eva M. Valero, "Endmember Extraction for Pigment Identification Pre- and Post-intervention: A Case Study from a XVIth Century Copper Plate Painting" in Archiving Conference, 2023, pp 198 - 203, https://doi.org/10.2352/issn.2168-3204.2023.20.1.40