Boletín de la Sociedad Geológica Mexicana Volumen 76, núm. 2, A101223, 2024 http://dx.doi.org/10.18268/BSGM2024v76n2a101223

Desarrollo de un método de clasificación de pastas cerámicas basado en el análisis de imágenes de radiografía digital

Development of a classification of ceramic paste based on the analysis of digital radiography images

Alan Nagaya¹, Rodrigo Tlacuilo¹, Oscar G. de Lucio^1,*, Soledad Ortiz²

¹ Laboratorio Nacional de Ciencias para la Investigación y Conservación del Patrimonio Cultural, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Coyoacán, CDMX, Mexico.

² Instituto de Investigaciones Antropológicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Coyoacán, CDMX, Mexico.

* Autor para correspondencia: (O. G. de Lucio) This email address is being protected from spambots. You need JavaScript enabled to view it.

Cómo citar este artículo:

Nagaya, A., Tlacuilo, L., de Lucio, O.G., Ortiz, S., 2024, Desarrollo de un método de clasificación de pastas cerámicas basado en el análisis de imágenes de radiografía digital: Boletín de la Sociedad Geológica Mexicana, 76 (2), A101223. http://dx.doi.org/10.18268/BSGM2024v76n2a101223

Manuscrito recibido: 12 de septiembre de 2023; manuscrito corregido: 1 de octubre de 2023; manuscrito aceptado: 1 de enero de 2024.

ABSTRACT

X-rays have motivated the application of imaging techniques in Heritage Sciences, providing a tool that produces global information about the object. The radiography analysis generates information with physical meaning relating the material properties with the photon attenuation. In this work, the characterization of a digital radiography system is presented, and the basis of an analysis method for ceramics sherds is described, based on the study of histograms, which represent the distribution of pixel intensities that made the image. Thus, this study aims to provide a tool, based on a mathematical analysis, encompassing a Lorentzian fit to each image histogram and a cluster analysis, that leads to establish a contrast between ceramic pastes. By applying this method, we could distinguish six paste groups from a set of 275 ceramic objects (archaeological and contemporary) from the Maya region.

Keywords: ceramics, digital radiography, X-rays, image analysis, Heritage sciences.