L. Hamsaveni and  Navya Prakash and  Suresha,  Degraded Document Analysis and Extraction of Original Text Document: An Approach without Optical Character Recognition.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 121(1). 110 - 118
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10006489.