Albertin F, Astolfo A, Stampanoni M, Peccenini Eva, Hwu Y, Kaplan F, Margaritondo G
Faculté des Sciences de Base, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
Swiss Light Source, Paul Scherrer Institut (PSI), Villigen, Switzerland.
J Synchrotron Radiat. 2015 Mar;22(2):446-51. doi: 10.1107/S1600577515000314. Epub 2015 Jan 30.
Handwritten characters in administrative antique documents from three centuries have been detected using different synchrotron X-ray imaging techniques. Heavy elements in ancient inks, present even for everyday administrative manuscripts as shown by X-ray fluorescence spectra, produce attenuation contrast. In most cases the image quality is good enough for tomography reconstruction in view of future applications to virtual page-by-page `reading'. When attenuation is too low, differential phase contrast imaging can reveal the characters from refractive index effects. The results are potentially important for new information harvesting strategies, for example from the huge Archivio di Stato collection, objective of the Venice Time Machine project.
利用不同的同步加速器X射线成像技术，已检测出三个世纪前行政古文献中的手写文字。古代墨水中的重元素，即便如X射线荧光光谱所示，在日常行政手稿中也存在，会产生衰减对比度。鉴于未来在虚拟逐页“阅读”中的应用，在大多数情况下，图像质量足以用于断层扫描重建。当衰减过低时，微分相衬成像可通过折射率效应揭示文字。这些结果对于新的信息获取策略可能具有重要意义，例如从威尼斯时间机器项目的目标——庞大的国家档案馆馆藏中获取信息。
