Towards complete digital twins in cultural heritage with ART3mis 3D artifacts annotator. - Dimitrios Karamatskos; Vasileios Arampatzakis; Vasileios Sevetlidis; Stavros Nousias; Athanasios P. Kalogeras; Christos Koulamas; Aris S. Lalos; George Pavlidis (CoRR, 2026)