R, R. DIRECTIONAL THRESHOLDING ALGORITHM FOR GRAY SCALE IMAGE SEGMENTATION . INTERNATIONAL JOURNAL OF ADVANCES IN SIGNAL AND IMAGE SCIENCES, [S. l.], v. 4, n. 1, p. 23–29, 2018. DOI: 10.29284/ijasis.4.1.2018.23-29. Disponível em: https://xlescience.org/index.php/IJASIS/article/view/42. Acesso em: 7 may. 2024.