Optimized Planning of Terrestrial Laser-scanner Surveys in Complex Archaeological Environments (original) (raw)
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3D Survey in Complex Archaeological Environments: An Approach by Terrestrial Laser Scanning
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The survey of archaeological sites by appropriate geomatics technologies is an important research topic. In particular, the 3D survey by terrestrial laser scanning has become a common practice for 3D archaeological data collection. Even if terrestrial laser scanning survey is quite well established, due to the complexity of the most archaeological contexts, many issues can arise and make the survey more difficult. The aim of this work is to describe the methodology chosen for a terrestrial laser scanning survey in a complex archaeological environment according to the issues related to the particular structure of the site. The developed approach was used for the terrestrial laser scanning survey and documentation of a part of the archaeological site of Elaiussa Sebaste in Turkey. The proposed technical solutions have allowed providing an accurate and detailed 3D dataset of the study area. In addition, further products useful for archaeological analysis were also obtained from the 3D ...
Laser Scanner Survey Of An Archaeological Site: Scala Di Furno (Lecce, Italy)
International Archives of …, 2010
Under the LEADER + Puglia 2000/2006 project, the Community Initiative Programme aimed to promote the integrated, endogenous and sustainable development of rural areas and enhancement of specific experiences with the external territories, it has been conducted a terrestrial LiDAR survey of a protohistoric settlement dating from the period between the Bronze Age to the Iron age (XVIII-VIII century BC.). The possibility to exploit, and make available at the same time, this very perishable settlement (sandy site) took a survey of high detail aimed to the realization of a copy of the excavation to be placed in situ. Given the complexity, for some areas, such as the furnace, it was necessary an integration of LiDAR data with those from photogrammetric technique. The integrated survey allowed to return a 3D numerical model aimed at the next step of prototyping in 1:1 scale.
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The aim of this paper is to describe the results of the laser scanner survey of an archaeological complex, aimed at knowledge, documentation and diagnostic operations to make premises secure. Archaeology has always been the most complex subject where the discipline of surveying is continually being put to the test and experimented with. The development in laser scanner technologies has led to an extremely important turning point in this field. Complex geometrical shapes or irregular surfaces, such as those in archaeology, are defined through surfaces that can be directly extrapolated from the point cloud with extremely high precision, allowing even the finest details to be mapped. The precision of this surveying technique together with the wide range of data that can be acquired and represented provide several opportunities for communication and investigation. This experimental work has concentrated on the Furlo tunnel complex, located along one of the most important infrastructural arteries from Roman antiquity, the Via Flaminia. The need in this case was to be able to acquire the entire rocky complex, extending the scan area as far as possible so as to assess the whole system in its entirety. The results of our metric and morphological survey provide an excellent basis for record the situation as it is today, so as to establish the initial temporal step to be used in future monitoring programmes. The accuracy of the survey allows static assessments and effective planning for future safety-oriented projects.
Digital Applications in Archaeology and Cultural Heritage, 2020
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USING 3D LASER SCANNERS ON ARCHAEOLOGICAL SITES
In order to fully understand and interpret an archaeological site, it must be recorded and documented in detail. There are two types of archaeological documentation -the, so-called, direct surveys which usually include a pencil, piece of paper and a tape measure, and the second type which includes indirect techniques like total stations, 3D optical instruments, drones or a simple camera. More time to collect data is required when applying the first approach, meaning that more people are a prerequisite for speeding up the process, which leads to "not fully precise" and subjective data acquisition. On the other hand, indirect techniques, like 3D laser scanning discussed in this paper, are less time consuming and provide more accurate documentation. 3D scanning may also improve object accessibility, can aid expert understanding, and enhance relations with the general public.
The Laser Scanner for Archaeological Survey: "Le Terme Dell'Indirizzo" in Catania
2005
D laser scanner technology, joining precision and versatility, assures survey's high quality and working time's optimization. Nowadays, this is the most advanced methodology to document, monitor and diagnose buildings which are difficult to survey for their articulated formal-geometric shape, unfavorable logistic and environment conditions. Thanks to its peculiarities, this methodology has great potentialities in archaeological survey, not yet explored; whereas traditional systems have more difficulties and limits. The aim of the present essay is to verify laser scanner's potentialities in surveying the so called "Terme dell'Indirizzo", an organism of great interest for its spatial complexity and the substantial integrity's conditions of its ten rooms. The use of a high precision technology instrument, capable of providing great number of information (total cloud of approximately 24 million points) supported by suitable softwares, allows to realize...
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLI-B5, 2016
This paper deals with the non-destructive documentation of the "Radkov" (Svitavy district, Czech Republic) archaeological site. ALS, GPR and land survey mapping will be used for the analysis. The fortified hilltop settlement "Radkov" is an immovable historical monument with preserved relics of anthropogenic origin in relief. Terrain reconnaissance can identify several accentuated objects on site. ALS enables identification of poorly recognizable archaeological objects and their contexture in the field. Geophysical survey enables defunct objects identification. These objects are hidden below the current ground surface and their layout is crucial. Land survey mapping provides technical support for ALS and GPR survey. It enables data georeferencing in geodetic reference systems. GIS can then be used for data analysis. M. Cejpová and J. Němcová have studied this site over a long period of time. In 2012 Radkov was surveyed using ALS in the project "The Research of Ancient Road in Southwest Moravia and East Bohemia". Since 2015 the authors have been examining this site. This paper summarises the existing results of the work of these authors. The digital elevation model in the form of a grid (GDEM) with a resolution 1 m of 2012 was the basis for this work. In 2015 the survey net, terrain reconnaissance and GPR survey of two archaeological objects were done at the site. GDEM was compared with these datasets. All datasets were processed individually and its results were compared in ArcGIS.
The laser scanner for archeological survey: “le terme dell’Indirizzo” in Catania
3D laser scanner technology, joining precision and versatility, assures survey's high quality and working time's optimization. Nowadays, this is the most advanced methodology to document, monitor and diagnose buildings which are difficult to survey for their articulated formal-geometric shape, unfavorable logistic and environment conditions. Thanks to its peculiarities, this methodology has great potentialities in archaeological survey, not yet explored; whereas traditional systems have more difficulties and limits.
AERIAL LASER SCANNING IN ARCHEOLOGY
cipa.icomos.org
Technology of aerial laser scanning is often well used for a DTM generation. The DTM (digital surface model) displayed in appropriate form, e.g. shaded surface, can be used as a data source for searching for archaeological sites. Aerial laser scanning data acquisition is unfortunately too expensive for noncommercial projects. It can be a solution to use the ALS data acquired primarily for another purpose by public service. In general, this data has lower density than the expensive custom-made data, but in a limited size can be borrowed for some research purpose. We tested the data from The Czech Office for Surveying, Mapping and Cadastre. The aim was to find if possible to use data characterized by a density of about 1 point/m 2 for archaeological research. We used the DTM in the form of shaded surface and inspected the data around few well known archaeological sites of different periods. It is also possible to use different outputs from the original DTM to better display terrain discontinuities caused by man's activity.
Computer Applications in Archaeology 2012. CAA 2012, Southampton, Vol. II, 2013
This paper presents the work of 3D recording and geometric documentation of part of the walls of “Ciudad de Vascos” through specific methodologies of Archaeology of the Architecture, with the objective to obtain ‘quickly’ the individual measures of every element whichcompose the wall. We carried out a topographical survey with a TLS (LeycaScanStation C10), for the geometric and volumetric reconstruction; in addition we used a GPS to give absolute coordinates to the work. We obtained the 3D textured model and a series of plans or sections, like first results of the project, as well as a series of orthoimages that will support to the archaeological study. Finally, we used techniques of digital image processing, mainly: image enhancement, edge detection and filters, in order to ‘automate’ the process of defining structural elements to obtain the measurements requested.