Saleh Abdulla, H., and هدیة. “Recognition English Letters Using Invariant Moment in Extracting Properties of Images”. AL-Rafidain Journal of Computer Sciences and Mathematics, vol. 2, no. 1, June 2025, pp. 69-82, https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19300.