National Museums Scotland A1904.160 Shirt [quillwork detail under Reflectance Transformation Imaging]

NMS Catalogue Description: Tunic: North America, Canada, Plains, Blackfoot Reflectance Transformation Imaging dataset of quillwork detail taken on project visit to National Museums Collection Centre, Edinburgh September 2021. Comprising 88 jpeg files and finished .ptm file. RTI is a computational photographic method that captures a subject’s surface shape and colour 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 colour 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 Website.NMS藏品目录描述：本数据集为2021年9月于爱丁堡国家博物馆藏品中心（National Museums Collection Centre, Edinburgh）开展项目实地考察时拍摄的北美加拿大平原地区黑脚族（Blackfoot）束腰外衣羽毛绣细节反射变换成像（Reflectance Transformation Imaging, RTI）数据集。该数据集包含88个JPEG文件与最终生成的.ptm格式文件。反射变换成像（RTI）是一种计算摄影技术，可采集物体的表面形态与色彩信息，并支持对物体进行任意方向的交互式重打光操作；该技术还可对物体的表面形态与色彩属性进行数学增强处理，其增强功能可揭示实物经直接实证检验无法显现的表面细节信息。RTI查看器与构建工具可从文化遗产成像官网（Cultural Heritage Imaging Website）免费下载。