19 - 23 mar
10 a 15 horas
Eberhard Karls Universität Tübingen
Annual Conference on Computer Applications and Quantitative Methods in Archaeology, CAA-2018, Human History and Digital Future
Beyond 3D Modelling: Analysis of archaeological artefacts based on a morphing algorithm
Ponentes. Diego Jiménez Badillo, Salvador Ruíz-Correa, Mario Canul Ku, Rogelio Hasimoto Beltrán
Thanks to recent advances in scanning technologies there has been an increase in the number of methods developed for digitizing archaeological artefacts. Many of the resulting 3D models are used for visualization or archiving purposes. Unfortunately, there are still few projects oriented to gain archaeological knowledge from point clouds and triangular meshes. In this paper we present some results of an ongoing project focused on analyzing the shape of objects, focusing specifically on a new method to analyze variations of styles in archaeological artefacts. Such method is based on a 3D morphing algorithm that analyzes two objects whose shapes represent the canonical extremes of a continuum, that is, two objects that belong to two diferent “styles” within a cultural tradition. The purpose of the algorithm is taking these two extreme shapes as input in order to extract several 3 virtual models whose shape or “style” lies “in-between” the two extremes. This is useful in situations where archaeologists need to decide to which extreme a real artefact is more similar. The idea for this project came from the need to rank shape similarities in a collection of archaeological stone masks from Mexico. This includes masks belonging to several well defined styles, but it also includes many others that cannot be positioned within a specific class because they share features of two or more canonic styles. These masks were found in the Sacred Precinct of Tenochtitlan, the main ceremonial Aztec complex, located in Mexico City.
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