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

ABDUA: 5505(knee or arm bands) <br>Marischal Museum Catalogue Description: <br>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 <br>Reflectance Transformation Imaging dataset of a detail of quillwork taken on project visit to Marischal Museum Collection Centre, Aberdeen September 2021. <br><br>Comprising 143 jpeg files and finished .ptm file. <br><br> <br><br>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. <br><br> <br><br>RTI Viewer and Builder are freely downloadable from Cultural Heritage Imaging. <br><br><br>

ABDUA编号：5505（膝部或臂部饰带）<br>马里夏尔博物馆藏品目录描述：<br>一对男士膝部或臂部饰带，经改制后成为儿童腰带。材质为兽皮，被裁分为若干条带。每条带均以商用染料染色的羽管缠绕装饰。红色底面上饰有块面纹样。所有条带均以棉线重新缝合。每条饰边/条带的下缘均装饰有镀锡摇铃（或锥形饰件），并搭配染色紫羽。配有红色丝带系带。纹样以红色为底色，包含紫色、黄色、绿色与自然白色。该饰件用于正式场合，例如波瓦会（Pow-wows），年代约为1880年左右。<br><br>本反射变换成像（Reflectance Transformation Imaging, RTI）数据集拍摄于2021年9月对阿伯丁马里夏尔博物馆藏品中心的项目考察，内容为该羽饰工艺细节的成像数据。<br><br>数据集包含143个JPEG文件与最终生成的.ptm格式文件。<br><br><br><br>反射变换成像（RTI）是一种计算摄影技术，可捕捉拍摄对象的表面形态与色彩，并支持从任意方向对对象进行交互式重新打光。该技术还可通过数学算法增强对象的表面形态与色彩属性，从而揭示实体对象直接目视检查无法展现的表面细节信息。<br><br><br><br>RTI查看器（RTI Viewer）与构建工具（RTI Builder）可从Cultural Heritage Imaging平台免费下载。