Koistinen, MikaKettunen, KimmoPääkkönen, TuulaTiedemann, JörgTahmasebi, Nina2023-09-222023-09-222017ISSN 1736-6305 (Online)https://hdl.handle.net/10062/92960engopenAccessAttribution-NonCommercial-NoDerivatives 4.0 InternationalImproving Optical Character Recognition of Finnish Historical Newspapers with a Combination of Fraktur & Antiqua Models and Image PreprocessingArticle