Hafsa Moontari Ali, Roksana Khanom, Sarnali Basak, and Md. Imdadul Islam. 2014. “Recovery of Grayscale Image from Its Halftoned Version Using Smooth Window Function”. Jahangirnagar University Journal of Electronics and Computer Science 15 (June):15-22. https://ecs.ju-journal.org/jujecs/article/view/27.