hal-04530117 title_s Holland Day art photographic paper clustering : Automated procedures to assist photograph conservators? auteur Patrice Abry, Stéphane G. Roux, Adrienne Lundgren, Andrew G. Klein, Herwig Wendt, Stéphane Jaffard fichier_hal https://hal.science/hal-04530117/document annee 2019 conference 27ème Colloque francophone de traitement du signal et des images (GRETSI 2019)