Digital Twin 4.0: Semantic 3D Documentation and Analysis of Jewish Sepulchral Heritage

Abstract. In this paper we introduce and report on the project “Steinerne Zeugen digital – German-Jewish Sepulchral Culture between the Middle Ages and Modernity. Space, Form, Inscription.” A project report on the first years of the project will be given, with a focus on the design and implementation of interdisciplinary, digitally integrated workflows. We will present and compare different technical and methodological approaches applied to three cemeteries and analyse the challenges encountered at the interface of interdisciplinary collaboration, particularly regarding data interoperability, semantic consistency, scalable data processing, and long-term preservation of complex 3D datasets. An outlook on future developments and specific research questions in geomatic engineering will be given, addressing automated feature extraction, advanced spatio-semantic querying, and FAIR-compliant data infrastructures for sustainable digital heritage documentation and analysis within this long-term project.