1,720,978 research outputs found
Buddhist stele of Swat valley: Point cloud analysis and interpretation
Full text linkWith recent advancements on 3D sensors and cloud computing, high-speed, high-accuracy 3D measurement at micrometer level have been increase by scientists community and digital humanities researchers. The methodology proposed in this project aims to test some of the algorithms used in remote-sensing to the Buddhist sculptures from Swat Valley (Pakistan); these algorithms use high-resolution topographic data to identify, from DEMs, specific features like valleys, ridges, peaks, pits or surface anomalies. In the carved stone, the surface is analysed like a landscape, where carved areas are valleys bordered by slopes and crests. One of the simplest tools, the commonly used analytical hill-shading, which simulates artificial illumination on the DEM surface, is based on the same principle as the use of an oblique light source to highlight incisions in classic photography. Other families of algorithms that can be divided into three main groups (Slope and Curvature, Local Relief Model and Sky View Factor, Positive and Negative Openness and Geomorphons) are tested here
Impronte di calzature nel cantiere del teatro romano di Aquileia: rilievo 3D e analisi delle evidenze archeologiche
No full textOn the mortar of a radial wall of the cavea of the Roman theatre in Aquileia, evidence of footwear with hobnailed soles was observed. This evidence, which was still fresh when the bricks were laid, took the form of an impression on the mortar. This is a significant finding from an archaeological perspective, as it can be directly linked to the construction phase of the theatre and, more specifically, to the activities of the workers who were active on the site. The objective of this study is to document and interpret the archaeological evidence using three-dimensional surveying methodologies, such as Structure from Motion and structured light system, for the analysis of the most significant impressions from a diagnostic and analytical perspective. This will firstly identify the type of footwear that left impressions on the mortar and secondly investigate the dynamics of the theatre’s building site, such as the number of people involved in the construction of the wall and their working areas
LANDSCAPE ANALYSIS TECHNIQUES APPLIED TO A BUDDHIST CARVED ROCK SCULPTURE
Full text linkThe Swat valley (Pakistan) has always been considered an important center of Gandhara art. Due to the unfavourable conditions, this artistic phenomenon has long been almost ignored or underestimated, but its documentation is essential for study the symbolism of the figures, their spatial organization, their stylistic variation and their conservative state. The methodology proposed in this project starts form the 3D acquisition with a structured light system in order to obtain a 3D high resolution model of Buddhist carved rock sculpture. From the 3D geometry, The Digital Elevation Model is produced. This DEM is the starting points for the surface analysis using Remote Sensing approaches for classify landforms using pattern recognition. The surface is considered as a landscape, where carved are valleys bordered by slopes and crests. Hillshading, slope analysis and geomorphons are used in order to highlight the surface feature, to “read” all the details not visible due to the bad condition and to map surface state of conservation
A 3D approach to investigate the burials: the virtual reconstruction of tb. 22 of necropolis of Piovego (PD)
Full text linkThe burials of the necropolis of Piovego (PD) have been subjected in the past years to
processual research to reconstruct the post-depositional dynamics, thus providing a two-dimensional
reconstruction of the original structure of the graves. The goal of this research is to define a new
methodology on burial 22 of the necropolis, to replicate in other archaeological contexts. This new
methodology aimed to create morphometrically accurate 3D models with a correct topological
relationship between the grave finds and between them and the burial structure. 3D models of both the
findings and structural elements of the burial were made from graphic documents with the aid of 3D
modelling and 3D scanning techniques. The use of 3D models allowed the development of new
hypotheses on the placement of the grave goods and their position within the space available in the
burial. Furthermore, the models were useful to measure more accurately the perishable elements and
to estimate their shape and position. The digital technologies allowed us to work in a threedimensional perspective, overcoming the limits of a traditional approach and verifying previous
hypotheses on the topology of the burial, such as positioning of the finds and the existence of
perishable materials that were not preserved
Geometric features extraction of ancient pottery decorations through multiresolution laser scanning
No full textLa rappresentazione per la valorizzazione della città
No full textRappresentare una città non è un compito semplice, poiché le incognite da vagliare, nel passaggio
dalla scala architettonica a quella urbana sono tante e complesse; se a queste variabili, poi, si
aggiungono anche le trasformazioni subite dal tessuto urbano nel corso del tempo, rappresentare
una città diventa un’operazione dinamica e non più statica. Lo scopo di questo lavoro è di compiere
un ulteriore passo verso la conoscenza, la rappresentazione e la comunicazione dei meccanismi
storici e urbani che hanno generato la forma urbis di Carpi, nel modenese.
Representing a city is not an easy task because there are many subtle unknowns to consider, when a
researcher wants to move from an architectural scale to the urban one; moreover, if he adds the
transformations of the urban fabric over time to these variables, representing a city becomes a
dynamic operation and not a static one. The aim of this work is to take a step towards knowledge,
representation and communication of historical and urban mechanisms, which have generated the
forma urbis of Carpi
3D Fruition of Burial: Physical Limits and 3D Reconstruction of the Burial 14 of the Necropolis of Piovego (PD), Italy.
No full textIn the field of Cultural Heritage, 3D technologies were often employed for preservation, fruition and valorisation.
This research aims to restore the original features of burial 14 of the necropolis of Piovego using a new approach to create morphometrically accurate 3D models of the grave goods inside the structure of the burial. The necropolis of Piovego is situated in the Est of the modern city of Padua (Italy) and it was used between the end of sixth century BC until the beginning of the fourth century BC. Burial 14 was discovered and excavated in 1976 and it was a cremation with a dolium containing all funerary objects: a set of 6 vessels of pottery and an urn that contains human remains, accessories in bronze, 1 pottery whorl and 2 anthropomorphic figures. Furthermore, there were also a bronze needle, a bronze ring, a glass bead and a bronze spiral located at the same quota in the dolium, very close to each other, thus indicating the probable presence of a textile covering the urn. The funeral practice of wrapping in textiles the urns as an anthropomorphic representation of the deceased, was very widespread during the Iron Age in Italy, although the survival of ancient textiles in the archaeological record is quite rare. Often the only surviving traces are mineralized fragments of fabric or traces of pattern imprinted on objects that were in contact with the fabric. Other indicators of this funerary practice are objects that can be associated with clothes, such as fibulae, pins or decorative elements such as beads or studs.
Using a new 3D integrated approach, it was possible to simulate the “dressing” of the urn and reconstruct its original aspect within burial 14. The pottery vessels and the textiles were 3D modelled, while the metal and glass objects and the figures have been acquired by a structured-light 3D scanner.
The results of this research permitted to create an appearance of the burial physically visible and tangible in a three-dimensional environment, overcoming the limits of the archaeological records. This reconstruction proved to be useful not only in the interpretation of the burial but also as a potential media for future museum exhibitions of these grave goods, being an ideal integration to the museum storytelling and also providing a new and captivating way to understand the cultural heritage
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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