Study of historical Byzantine seal images: the BHAI project for computer-based sigillography. - Victoria Eyharabide; Laurence Likforman-Sulem; Lucia Maria Orlandi; Alexandre Binoux; Théophile Rageau; Qijia Huang; Attilio Fiandrotti; Béatrice Caseau; Isabelle Bloch (HIP@ICDAR, 2023)