Museum Rubbing Archive Digitization Recipe

配方：博物馆拓片档案数字化规范

type:recipe · level:intermediate · scale:decorative-object · stage:patternmaking

标签：数字化,翻拍,元数据,哈希存证

博物馆拓片数字化流程：中画幅相机（1 亿像素级）垂直翻拍，加十字偏振镜消除纸面反光，色卡与 1:1 比例尺同框；主档存 600 dpi 以上 TIFF（Adobe RGB），300 dpi JPEG 作查询代理档。元数据录入器物号、拓工、捶拓年代与残损状况，文件名按「馆藏号-面别-版本」编排，登记 SHA-256 哈希值防篡改，异质介质双备份保存。

Digitize museum rubbings with a medium-format camera (100 MP class) in vertical copy-stand setup, cross-polarized to kill paper glare, with a colour chart and 1:1 scale in frame. Keep TIFF masters at 600 dpi or better (Adobe RGB) and 300 dpi JPEG proxies for retrieval. Metadata must record accession number, rubbing artisan, date and condition; file as accession-face-version, register a SHA-256 hash for tamper evidence, and back up on two different media. ---