Lopez, V.W.M. and Paraan, F.N.C. 2019. Image preprocessing with bi-histogram equalization in a supervised classification of radiographs. Proceedings of the Samahang Pisika ng Pilipinas, 37(1), SPP-2019-PA-22. URL: https://proceedings.spp-online.org/article/view/SPP-2019-PA-22.