Reflectance and transmittance imaging spectroscopy of two medieval Frisian legal codes featuring hidden text

Reflectance and Transmission Imaging Spectroscopy (RIS and TIS) in the Visible and Near Infrared range (400-1000 nm, VNIR) of two pages containing hidden text in two Frisian legal codes from the Richthofen Collection (Leeuwarden, NL). Investigated were the <em>Fivelgo manuscript</em> (manuscript R 4) and the <em>Codex Phaesma </em>(manuscript R 8).<br>The data was acquired using a Specim IQ camera. <br>

本数据集采集了荷兰吕伐登李希霍芬藏品（Richthofen Collection）所藏两份弗里斯兰法律法典内两页带有隐藏文本的样本的可见光-近红外波段（Visible and Near Infrared, VNIR，400-1000纳米）反射式与透射式成像光谱（Reflectance and Transmission Imaging Spectroscopy, RIS和TIS）数据。
本次研究的对象为《菲韦尔戈手稿》（Fivelgo manuscript，编号R 4）与《法斯马抄本》（Codex Phaesma，编号R 8）。
该数据集采用Specim IQ相机采集获取。