Hajdu, András, Lajos Hajdu, and Robert Tijdeman. “Approximation of the Euclidean Distance by Chamfer Distances”. Acta Cybernetica 20, no. 3 (January 1, 2012): 399–417. Accessed April 3, 2025. https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3819.