This paper presents an imaging system that reads texts from books that open less than 30 degrees (due to their fragile bindings) and whose paper quality is degraded. In particular, the system operates on the Scheimpflug principle to correct the geometric distortion necessarily introduced when imaging barely open books. We introduce the guiding principles behind such a system, discuss how it is calibrated and set up, present the results of imaging two dime novels from early twentieth century, both with fragile bindings, and discuss lessons we learned.
Gregory Heyworth, Keith T. Knox, Kenneth Boydston, Yuhao Zhu, "Multispectral Scheimpflug: Imaging Degraded Books That Open less Than 30 Degrees" in Archiving Conference, 2022, pp 1 - 4, https://doi.org/10.2352/issn.2168-3204.2022.19.1.1