Suhirman, S., S. Saifullah, A. Hidayat, and R. Sejati. “Otsu Method for Chicken Egg Embryo Detection Based-on Increase Image Quality”. MATRIK : Jurnal Manajemen, Teknik Informatika Dan Rekayasa Komputer, Vol. 21, no. 2, Mar. 2022, pp. 417-28, doi:https://doi.org/10.30812/matrik.v21i2.1724.