Marischal Museum, University of Aberdeen ABDUA: 5505 (knee or arm bands) detail under Reflectance Transformation Imaging

ABDUA: 5505(knee or arm bands) Marischal Museum Catalogue Description: Pair of man's knee or arm bands, re-worked into a boy's belt. Made of hide, cut into rows. Each row wrapped with quills dyed in commercial dye. Block design on a red background. All the rows have been sewn back together again with cotton thread. Bottom edge of each fringe/ row decorated tin jingle/cone with dyed purple feathers. Red ribbon ties. Purple, yellow, green and natural white design on red background. Worn at formal events e.g. Pow-wows. Circa 1880 Reflectance Transformation Imaging dataset of a detail of quillwork taken on project visit to Marischal Museum Collection Centre, Aberdeen September 2021. Comprising 143 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.ABDUA编号5505（膝部或臂部饰带） 马里沙尔博物馆藏品目录描述：一对男性膝部或臂部饰带，经改制为儿童腰带。该藏品以兽皮制成，被切割为若干条带。每条带均以经商业染料染色的羽管缠绕包裹。整体为红底块状纹样。所有条带均以棉线重新缝合。每条饰边/条带的下缘装饰有镀锡摇铃/锥形饰件，并搭配染色紫羽。配有红色缎带系带。纹样以紫色、黄色、绿色与自然白色在红底上呈现。该饰带可在正式场合佩戴，例如波瓦汇（Pow-wow），年代约为1880年。 2021年9月，在阿伯丁马里沙尔博物馆藏品中心的项目调研期间，采集了该羽饰工艺细节的反射变换成像（Reflectance Transformation Imaging，RTI）数据集。该数据集包含143个JPEG文件与最终生成的.ptm格式文件。 RTI是一种计算摄影技术，可采集物体表面的形状与色彩信息，并支持从任意方向对物体进行交互式重光照操作。RTI还可对物体表面形状与色彩属性进行数学增强处理，其增强功能能够揭示实体物体直接目视检测下无法显现的表面细节信息。RTI查看器（RTI Viewer）与构建器（RTI Builder）可从文化遗产成像（Cultural Heritage Imaging）平台免费下载。