Which is the most suitable scanner resolution for documents?

• Ano de defesa: 2025
• Autor(a) principal: MELLO, Daniela Raposo Nunes de
• Orientador(a): LINS, Rafael Dueire
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Federal de Pernambuco
• Programa de Pós-Graduação: Programa de Pos Graduacao em Ciencia da Computacao
• País: Brasil
• Palavras-chave em Português: Image resolution; Document digitization; Nyquist- Shannon Theorem
• Link de acesso: https://repositorio.ufpe.br/handle/123456789/64491

Defining the correct image resolution for document digitization is essential to ensure the accu- rate preservation of all necessary information while optimizing acquisition efficiency, processing time, storage demand, and the transmission bandwidth. It is crucial that the digitization res- olution ensures that the digitized document, when printed in a high resolution at its original dimensions, fully retains the information from the original document, thus enabling the preser- vation and maintenance of the information. Despite its importance for document engineering and preservation, current digitization standards and recommendations are predominantly based on experimental evidence and empirical knowledge. Considering these parameters, the crucial question, “Which is the most suitable resolution for document digitization?” was recently raised by Professor George Nagy, one of the pioneers in Document Engineering, highlighting a long-standing concern that has not been adequately addressed by the research community. This work proposes an answer based on the principles of the Nyquist-Shannon theorem from Information Theory, this approach aims to provide a theoretical foundation for determining the appropriate resolution for document digitization, ensuring the preservation of information.