Yamada, Taizo
University of Tokyo. Historiographical Institute. Assistant Professor
Digitalization of pre-modern Japanese Historical Material by Historiographical Institute The University of Tokyo
Historiographical Institute the University of Tokyo, ‘HI’ for short, has been investigating historical materials concerning pre-modern Japanese history. In the process, we have been making and managing metadata as the results and shooting the materials. Recently, we have been digitizing of the historical materials based on the results so that the data can be used at long-term preservation and utilization of them. In the paper, we report on the approach and the efforts.
HI have continuously and systematically researched and collected pre-modern Japanese historical materials, since 1885 for about 120 years. From around 1930, HI started the investigation of the materials in other countries with the support of the U.A.I (Union Academique Internationale). Micro-camera photography began in earnest in around 1970, and digital camera photography began in around 2010. Of these films, we have scanned films and released digitized images. Also, since the late 1990s, we have been photographing and digitizing historical materials held in archives, including manuscripts. The results have been published in the databases of HI, enabling sharing among researchers as well as manuscripts and photo books, greatly contributing to the development and deepening of Japanese history.
The method of collection of reproduction historical material has changed with the times. In order to make permanent use of the accumulated the materials, we have formulated a method for uniformly carrying out processes such as photography, digitization, and management and have been constructing and operating a system to realize that.
東京大学史料編纂所における前近代日本史史料のデジタル化
東京大学史料編纂所（以下，史料編纂所）における前近代日本史史料に関する調査とそれに基づく史料画像のデジタル化，およびそれの長期保存・長期利用を目指した取り組みについて報告する．
史料編纂所では組織的かつ系統的に前近代日本史史料の調査および収集（史料採訪）を，1885年より本格化し約120年間にわたり，継続的に行ってきた．1930年頃からは在外日本関係史料についても史料採訪を開始し，その後国際学士院連合等の支援を得て史料収集を行ってきた．1970年頃から本格的にマイクロカメラ撮影を，2010年頃よりデジタルカメラによる撮影を開始した．これらの撮影分のうち，フィルム類についてはスキャニングし，デジタル化した画像を公開してきた．また1990年代後半から写本類を含む史料編纂所所蔵史料についても撮影し，デジタル化を進めてきた．その成果はDBでの公開により，写本や写真帳と同様に研究者間での共有を可能とし，日本史学の発展や深化に大きく寄与してきた．
複製史料収集の方法は時代とともに変化してきたが，蓄積した複製史料を永続的に利用するために，撮影・デジタル化・管理などの工程を所として画一的に行うための方法を策定し，それを実現するためのシステム構築・運用を行っており，この取り組みついても報告する．