National Museums Scotland A.UC.316 (Shirt) Quillwork detail under Reflectance Transformation Imaging

A.UC.316 NMS Catalogue Description: Tunic of deer leather ornamented with quillwork and tags of black hair and leather: North America, Plains, possibly Assiniboin or Yanktonai Reflectance Transformation Imaging dataset of quillwork detail taken on project visit to National Museums Collection Centre, Edinburgh September 2021. Comprising 142 jpeg files, assembly files and finished .ptm file. RTI is a computational photographic method that captures a subject’s surface shape and color and enables the interactive re-lighting of the subject from any direction. RTI also permits the mathematical enhancement of the subject’s surface shape and color attributes. The enhancement functions of RTI reveal surface information that is not disclosed under direct empirical examination of the physical object. RTI Viewer and Builder are freely downloadable from Cultural Heritage Imaging.A.UC.316 NMS 藏品目录描述：饰有羽毛绣与黑发饰片及皮革饰标的鹿皮长袍，产自北美大平原地区，所属族群可能为阿西尼博因族（Assiniboin）或扬克顿奈族（Yanktonai）。 2021年9月于爱丁堡国家博物馆藏品中心开展项目调研期间，采集了该服饰羽毛绣细节的反射变换成像（Reflectance Transformation Imaging，RTI）数据集。该数据集包含142个JPEG图像文件、组装文件与最终.ptm格式文件。 反射变换成像是一种计算摄影技术，可采集目标物体的表面形态与色彩信息，并支持从任意方向对目标进行交互式重新打光。该技术还可对物体的表面形态与色彩属性进行数学增强，其增强功能可揭示在对实体物体直接实证检视时无法被观测到的表面细节。RTI查看器与构建工具可从文化遗产成像（Cultural Heritage Imaging）平台免费下载。