Hace ya un par de semanas hemos participado con varios posters y comunicaciones en el XVII Congreso Mundial UISPP que se ha celebrado en Burgos. En este congreso hubo multitud de sesiones a la vez. Había que escoger entre todas las sesiones y esperar tener suerte ya que, si se pretendía ir a una, te ibas a perder todo lo demás, con el reto además de que en el mismo día coincidían muchas temáticas más o menos similares (yo participaba en otra sesión al mismo tiempo! una locura).
Me interesaba especialmente la sesión The scientific value of 3D archaeology, celebrada el 2 de septiembre y ha valido la pena estar allí. Podéis consultar los resumenes de las comunicaciones en el libro de abstracts del congreso, a partir de la página 133.
Han asistido gente tan destacada como Dominic Powlesland, director del The Landscape Research Centre (aquí los trabajos que tiene colgados en su perfil de Sketchfab) y que lleva muchos años promoviendo el uso de diversas técnicas y tecnologías en la arqueología; hubo varias comunicaciones sobre GIS + 3D; sobre el análisis de datos, como la de Hugo Pires y su análisis MRM (que lo podréis ver ya que también es profesor del Curso TDDG); sobre cómo la fotogrametría y Lidar permiten mejorar el registro de elementos arqueológicos, sean cuales sean tus objetivos, metodología, etc. Un comentario al margen: el programa de fotogrametría que todos los ponentes hemos mostrado como herramienta de trabajo ha sido Agisoft PhotoScan. programa que vamos a utilizar en los Módulos 3 y 4 del Curso TDDG 2014. Cada vez es más hegemónico en los congresos a los que asisto, en las publicaciones en el ámbito del patrimonio. Y una de sus claves seguro que es su facilidad de uso y potencia, así como la rápida curva de aprendizaje. Uno de los organizadores Hans Kamermans, ha grabado la sesión, por lo que pronto esperamos verla por ahí y parece que también vamos a publicar conjuntamente lo que allí se ha presentado.
Esto es lo que hemos presentado en esta sesión:
Archaeology and coastal erosion: monitoring change through 3D digital techniques, con Elías López-Romero, Alejandro Guimil y Marie-Yvane Daire.
URI: http://hdl.handle.net/10261/101377
Resumen    | At present, sea-level rise is one visible effect of climate change, and human activity is also threatening much coastal and island territory on a global scale. The vulnerability of coastal heritage is increasingly coming into focus, particularly in areas such as the European Atlantic façade, where the combined results of sea-level rise, coastal environment dynamics and human activity are significantly altering the coastline. In this context, one of the aims of the eSCOPES Project (Evolving spaces: coastal landscapes of the Neolithic in the European Land’s Ends, Marie Curie-IEF) is to provide cost-effective tools for monitoring at-risk coastal archaeological sites.The project uses close-range photogrammetric techniques (‘Structure from Motion’) to record, 3D model and monitor changes in the architecture of selected megalithic monuments in three areas of the European Atlantic façade: the isle of Coalen (Côtes-d’Armor, Brittany, France), the Pénestin peninsula (Morbihan, Brittany, France) and the isle of Guidoiro Areoso (Ría de Arousa, Galicia, Spain). The sites have been chosen taken into account their location in different environmental settings, their different structural characteristics and their high vulnerability. In addition to the photogrammetric record, a 3D laser scanning has recently been performed in Guidoiro Areoso in order to provide a series of comparative reference models.The project is still ongoing. Two fieldwork campaigns have so far taken place (September 2013 and February-March 2014). As a result, we have obtained more than 1200 photographs for each site so far. Several palaeosols and structures associated with, or in close proximity to, the megalithic monuments have also been documented. A third and last fieldwork campaign will take place in September 2014. Some preliminary 3D models have already been obtained and are being object of in-depth analysis. The use of close-range photogrammetry appears as a cost-effective way to efficiently apprehend coastal archaeological site erosion. The comparison of the 3D models for each site (surface loss, quantitative analysis) will provide a three-dimensional cuantitative and a visual estimate of the erosion rate for the archaeological sites, constituting a powerful tool for decision-making processes to inform best practice in managing coastal heritage. Additionally, the detailed three-dimensional record of the selected case studies will also allow safeguard the potential for architectural analysis of the sites even in the event of severe damage or destruction. |
Quick 3D record: a low-cost method of documentation and analysis of scattered architectures in the EMCHAHE project, con Rebeca Blanco-Rotea y José Carlos Sánchez-Pardo
URI: http://hdl.handle.net/10347/11404
Resumen: This
work makes part of the Marie Curie CIG EMCHAHE project: Early Medieval Churches: History, Archaeology and Heritage (2013-2017), lead by José Carlos Sánchez-Pardo at the University of Santiago de Compostela (Spain). The research area of this project is the archaeology and history of the early medieval rural churches and their value for cultural management in Galicia (Northwest Spain). EMCHAHE is a project with several methodological challenges that we must face with limited resources. One of these challenges is the territorial scale, which involves the analysis of a large number of sites scattered through three rural areas of Galicia. This dispersion increases the problems and the cost of the access and the study of each church. Another one is the difficulty of identifying and analysing evidence of early medieval phases in the churches due to the frequent existence of several reforms and reconstructions. Therefore, it is necessary to apply a church documentation method as agile in field as accurate enough, which allows recording the graphic and geometric information necessary for a detailed study (stratigraphic analysis of the walls, identification of architectural elements, etc.) with the lowest cost. The poster will summarize the workflow and results of this quick and low-cost record of scattered churches proposal.