An important question in cultural heritage concerns the make process of an artifact. Understanding the make process provides insight related to the origin, techniques and craftsmanship used to make the artifact. Searching for tool marks or traces left by the artist’s hand is one way of retrieving clues related to the make process. X-ray computed tomography (CT) is a non-destructive tool that produces volumetric images of structures inside an artifact. However, interactively searching in large vol- umetric images for tool marks is a difficult, tedious and time consuming task. In this article, we introduce the concept of a dual space. The governing idea is that the dual space represents the air in the interior of an object. In the context of cultural heritage, the dual space represents those materials that first belonged to the object but have been removed during the make process. Our main goal of creating the dual space is to facilitate searching, inspection and interpretation of tool marks. We provide two examples of how the dual space can be used to study the make process.

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IEEE BITS the Information Theory Magazine
Computational Imaging

van Liere, R, Batenburg, K.J, Garachon, I, Wang, C-L, & Dorscheid, J. (2022). The dual space: Concept and applications in cultural heritage. IEEE BITS the Information Theory Magazine, 2(1), 49–57. doi:10.1109/MBITS.2022.3202508