scholarly journals Zdroje a šíření vybraných komodit keramické produkce vrcholného a pozdního středověku

Author(s):  
Martin Hložek ◽  
Markéta Tymonová ◽  
Vojtěch Nosek ◽  
Zdeňka Měchurová ◽  
Petr Holub ◽  
...  

The publication is focused on late medieval pottery products with higher aesthetical effect. The key group is represented by stove tiles, where the unifying elements of relief decoration helped to define series of motifs for stoves with specific iconographic concept, which were found in various locations. The same approach can be also used with small ceramic sculptures, aquamaniles and relief-decorated floor tiles, even though the achieved information value in these cases is much lower. Micropetrographic, XRF and other analyses helped to identify the production centres and the distribution model of these ceramic groups. 3D documentation enabled a detailed comparison of differences between individual reliefs and specific traces of manufacturing procedures. Individual chapters contain active links to the source database of analysed items and to 3D models of selected specimens from reference collections.

Author(s):  
D. Einaudi ◽  
A. Spreafico ◽  
F. Chiabrando ◽  
C. Della Coletta

Abstract. Rebuilding the past of cultural heritage through digitization, archiving and visualization by means of digital technology is becoming an emerging issue to ensure the transmission of physical and digital documentation to future generations as evidence of culture, but also to enable present generation to enlarge, facilitate and cross relate data and information in new ways. In this global effort, the digital 3D documentation of no longer existing cultural heritage can be essential for the understanding of past events and nowadays, various digital techniques and tools are developing for multiple purposes.In the present research the entire workflow, starting from archive documentation collection and digitization to the 3D models metrically controlled creation and online sharing, is considered. The technical issues to obtain a detail 3D model are examined stressing limits and potentiality of 3D reconstruction of disappeared heritage and its visualization exploiting three complexes belonging to 1911 Turin World’s Fair.


Author(s):  
E.P. Zagvazdin ◽  
Ya.G. Zagvazdina

The article presents morphological analysis of ceramic complexes from excavations in 2006 and 2017 in the city of Tobolsk. The pottery came from two areas: the Tobolsk Kremlin and the Upper town (9 Oktyabrskaya st.). Within this research, we aimed to conduct comparative analysis of morphology of the tableware from these sites to assess its similarities. From the two areas, 2261 ceramic fragments have been analyzed, and 200 vessels (counted by rims) from the late 16th c. — first quarter of the 18th c. layers have been identified. By the production technology, the dishes are non-glazed, made mainly on the pottery wheel. Hand-made ceramics have also been found in small quantity (less than 2 %). The assemblage is dominated by pot-like dishes (94.5 %). The proportion of cupped dishes is small. Other types of dishes (large pot, washbasin pot) have been found in single numbers. Based on the appearance of rims and necks, three types of pots and five types of bowls have been identified. Comparison has been made between the diameter of the mouth and the type of pot. Further examined were the frequency of occurrence of dishes with different colors and type of surface treatment, dimensions of bottoms, frequency of adding of sand to the surface of the pottery wheel. The assemblages have been compared to the late medieval ceramics of the northern, north-western and central regions of Russia, as well as the Urals and Siberia. Comparisons have been also made with the results of other studies of the Tobolsk ceramics. Statistics show that the pottery complexes are very similar to each other, both in large groups (pot-shaped and cup-shaped ware) and by other parameters (color and type of surface treatment, rim shape, mouth and bottom size, the ratio between types and diameters of pot mouths). Differences have been identified in the proportion of higher quality light gray dishes, being 2.5 times larger in the territory of the Upper town than in the Sofia yard. The difference is also expressed in proportions of the three types of pots. Type I prevails in the territory of the Upper town, and types II and III — in the Sofia court. Bowl-shaped dishes are diverse (3 types) and are present in both parts of the town. The quality light gray and black-glazed vessels of this type have been classified as tableware, partially for the lack of traces of soot. With this classification, the proportion of bowls defined as tableware constitutes 3 %. Comparison of the assemblages with the late medieval pottery from other regions of Russia revealed close analogies. But in terms of the general range of dishes, Tobolsk stands behind the cities of the European part of the country.


Author(s):  
O. Al Khalil ◽  
P. Grussenmeyer

<p><strong>Abstract.</strong> The paper explores the possibilities of using old images for 2D and 3D documentation of archaeological monuments using open source, free and commercial photogrammetric software. The available images represent the external façade of the Western gate and Al Omari Mosque in the city of Bosra al-Sham in Syria, which were severely damaged during the recent war. The images were captured using consumer camera and they were originally used to achieve 2D documentation for each part of the gate separately. 2D control points were used to scale the digital photomosaic and reference distances were applied for the scaling of the 3D models. Archive images were used to produce a 2D digital photomosaic of the monument by image rectification and 3D dense point clouds by applying Structure from Motion (SfM) techniques. The geometric accuracy of the results has been assessed.</p>


Author(s):  
A. T. Mozas-Calvache ◽  
J. L. Pérez-García ◽  
J. M. Gómez-López ◽  
J. L. Martínez de Dios ◽  
A. Jiménez-Serrano

Abstract. This paper describes the methodology employed to obtain 3D models of three funerary complexes (QH31, QH32 and QH33) of the Necropolis of Qubbet el Hawa (Aswan, Egypt) and the main results obtained. These rock-cut tombs are adjacent structures defined by complex geometries such as chambers, corridors and vertical shafts. The main goal of this study was to discover the spatial relationships between them and obtain a complete 3D model. In addition, some models with realistic textures of the burial chambers were demanded in order to analyse archaeological, architectural and geological aspects. The methodology was based on the use of Terrestrial Laser Scanning and Close Range Photogrammetry. In general, both techniques were developed in parallel for each tomb. Some elements presented difficulties because of their reduced dimensions, the presence of vertical falls, some objects stored in the tombs that generated occlusions of some walls, coincidence of other workers, poor illumination conditions, etc. The results included three complete 3D models obtained without texture and some parts of interest obtained with real textures. All models were merged into a global 3D model. The information extracted from this product has helped architects and archaeologists to contrast their premises about the spatial behaviour of the tombs. The results have also allowed the obtaining of the first 3D documentation of these tombs under the same reference system, allowing them to be studied completely. This information is very important for documentation purposes but also to understand the spatial behaviour of these structures and the excavation processes developed by ancient Egyptians 4000 years ago.


Author(s):  
M. L. Hou ◽  
Y. G. Hu ◽  
Y. H. Wu ◽  
X. S. Zhao

Recently different types 3D data of many cultural heritage are collected, however, how to store and manage these data problem. This paper presents a new solution regarding cultural 3D information fine reconstruction and data management based on 3D modeling. These data were stored with the file system and database, which improved the efficiency of data retrieval; on this basis, hyper-fine 3D models of cultural relics were established. Fine 3D information model based on this method can be used for 3D statistics, virtual restoration and change detection, etc. It can provide a scientific basis for the field of conservation and restoration of cultural relics, but can also provide a reference for fine 3D reconstruction to be applied to other cultural relics. Finally, the Dazu Thousand-hand Bodhisattva has been taken as an example, which verified the feasibility and effectiveness of the program.


Author(s):  
V. Katsichti ◽  
G. Kontogianni ◽  
A. Georgopoulos

Abstract. In archaeological excavations, many small fragments or artefacts are revealed whose fine details sometimes should be captured in 3D. In general, 3D documentation methods fall into two main categories: Range-Based modelling and Image-Based modelling. In Range Based modelling, a laser scanner (Time of Flight, Structured light, etc.) is used for the raw data acquisition in order to create the 3D model of an object. The above method is accurate enough but is still very expensive in terms of equipment. On the other hand, Image-Based modelling, is affordable because the equipment required is merely a camera with the appropriate lens, and possibly a turntable and a tripod. In this case, the 3D model of an object is created by suitable processing of images which are taken around the object with a large overlap. In this paper, emphasis is given on the effectiveness of 3D models of frail archaeological finds originate from the palatial site of Ayios Vasileios in Laconia in the south-eastern Peloponnese, using low-cost equipment and methods. The 3D model is also produced using various, mainly freeware, hence low-cost, software and the results are compared to those from a well-established commercial one.


2020 ◽  
Vol 12 (10) ◽  
pp. 1626 ◽  
Author(s):  
Dag-Øyvind E. Solem ◽  
Erich Nau

Digital 3D documentation methods such as Image-Based Modelling (IBM) and laser scanning have become increasingly popular for the recording of entire archaeological sites and landscapes, excavations and single finds during the last decade. However, they have not been applied in any significant degree to miniature incisions such as graffiti. In the same period, Reflectance Transformation Imaging (RTI) has become one of the most popular methods used to record and visualize this kind of heritage, though it lacks the benefits of 3D documentation. The aim of this paper is to introduce two new ways of combining IBM and RTI, and to assess these different techniques in relation to factors such as usability, time-efficiency, cost-efficiency and accuracy. A secondary aim is to examine the influence of two different 3D processing software packages on these factors: The widely used MetaShape (MS) and a more expensive option, RealityCapture (RC). The article shows that there is currently no recording technique that is optimal regarding all four aforementioned factors, and the way to record and produce results must be chosen based on a prioritization of these. However, we argue that the techniques combining RTI and IBM might be the overall best ways to record miniature incisions. One of these combinations is time-efficient and relatively cost-efficient, and the results have high usability even though the 3D models generated have low accuracy. The other combination has low time- and cost-efficiency but generates the most detailed 3D models of the techniques tested. In addition to cost-efficiency, the main difference between the 3D software packages tested is that RC is much faster than MS. The accuracy assessment remains inconclusive; while RC generally produces more detailed 3D models than MS, there are also areas of these models where RC creates more noise than MS.


2015 ◽  
Vol 36-37 (1) ◽  
pp. 1-35
Author(s):  
Laura Bailey ◽  
Tim Holden ◽  
Julie Franklin ◽  
Catherine Smith ◽  
Ruby Cerón-Carrasco

An archaeological excavation in the footprint of a proposed pumping station at the foot of the seaward slope of Castle Hill, Banff, revealed the remains of a late medieval coastal processing centre. Several features were uncovered including an extensive spread of midden material dating between the 11th and 13th centuries, a series of shallow enclosure ditches and a later rectangular building. Contained within the midden were knives, animal and fish bone, marine shells together with medieval pottery and possibly the largest collection of medieval fish hooks recovered in Scotland. The archaeological material provides evidence that the stretch of shoreline along the west bank of the River Deveron was the site of a small fishing settlement during the early development of the burgh of Banff. Results of the excavation make an important contribution to our understanding of late medieval economies in Scotland, particularly in relation to the collection and use of local resources and the development of the commercial fishing industry.


2019 ◽  
Vol 22 ◽  
pp. 219-240
Author(s):  
Wojciech Ostrowski ◽  
Łukasz Miszk ◽  
Weronika Winiarska

This paper aims to present the results of experiments which allowed us to propose up-to-date method of 3D visual representation of explored archaeological layers. Considering the destructive nature of excavations, the correct documentation of an exploration, which offers an insight both into the decision-making process taking place on site, and into the most faithful representation of the examined material, presents a fundamental challenge for a field archaeologist. The aim of the experiments presented here was to test three methods of creating 3D models of successive archaeological layers (contexts) recorded during an exploration. The presented findings show that the method of editing point clouds using open-source software prior to importing the model of the reconstruction of the explored layer into GIS software, is the best solution from the point of view of both the effort and time required, and it can definitely be suggested as the standard procedure of creating the graphical bases for an archaeological database.


Author(s):  
S. Gonizzi Barsanti ◽  
G. Guidi

Conservation of Cultural Heritage is a key issue and structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of Finite Elements Methods (FEM) for mechanical analysis is largely used in modelling stress behaviour. The typical workflow involves the use of CAD 3D models made by Non-Uniform Rational B-splines (NURBS) surfaces, representing the ideal shape of the object to be simulated. Nowadays, 3D documentation of CH has been widely developed through reality-based approaches, but the models are not suitable for a direct use in FEA: the mesh has in fact to be converted to volumetric, and the density has to be reduced since the computational complexity of a FEA grows exponentially with the number of nodes. <br><br> The focus of this paper is to present a new method aiming at generate the most accurate 3D representation of a real artefact from highly accurate 3D digital models derived from reality-based techniques, maintaining the accuracy of the high-resolution polygonal models in the solid ones. The approach proposed is based on a wise use of retopology procedures and a transformation of this model to a mathematical one made by NURBS surfaces suitable for being processed by volumetric meshers typically embedded in standard FEM packages. The strong simplification with little loss of consistency possible with the retopology step is used for maintaining as much coherence as possible between the original acquired mesh and the simplified model, creating in the meantime a topology that is more favourable for the automatic NURBS conversion.


Sign in / Sign up

Export Citation Format

Share Document