Zagoris, K., Pratikakis, I., Antonacopoulos, A., Gatos, B., & Papamarkos, N. (2014). Distinction between handwritten and machine-printed text based on the bag of visual words model. Pattern Recognition, 47(3), 1051-1062. https://doi.org/10.1016/j.patcog.2013.09.005