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  • Research software
  • 2017-2021
  • Open Access
  • The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
  • Aurora Universities Network

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  • Publication . Article . Other literature type . 2018
    Open Access English
    Authors: 
    Salvatore Gaglione; S. Del Pizzo; Salvatore Troisi; Antonio Angrisano;
    Publisher: Copernicus Publications

    Abstract. Using images to determine camera position and attitude is a consolidated method, very widespread for application like UAV navigation. In harsh environment, where GNSS could be degraded or denied, image-based positioning could represent a possible candidate for an integrated or alternative system. In this paper, such method is investigated using a system based on single camera and 3D maps. A robust estimation method is proposed in order to limit the effect of blunders or noisy measurements on position solution. The proposed approach is tested using images collected in an urban canyon, where GNSS positioning is very unaccurate. A previous photogrammetry survey has been performed to build the 3D model of tested area. The position accuracy analysis is performed and the effect of the robust method proposed is validated.

  • Publication . Article . Other literature type . 2019
    Open Access English
    Authors: 
    Daniela Palomba; Massimiliano Campi; Vincenzo Cirillo; A. di Luggo; Maria Cristina Facchini; R. Iaderosa; Domenico Iovane; Ornella Zerlenga;
    Publisher: Copernicus Publications
    Country: Italy

    Abstract. This study is part of a much wider project in which professors and researchers from the University of Naples Federico II and the University of Campania Luigi Vanvitelli are collaborating in different subject areas. The object of study is the ancient Sanctuary of Montevergine characterized by a long history of transformations and stratifications. Driven by the desire to fill a singular gap, linked to the lack of a systematic and comprehensive study of a complex whose first settlement dates back to the early 12th century, various studies have been started relating to the historical, artistic and architectural aspects.Various surveying techniques and methods had to be used due to its architectural, compositional and settlement characteristics. Integrated 3D surveying technologies were used for both the cognitive studies of the entire complex as well as for investigating and detecting the elements at different scales, ranging from the architectural to the detailed ones.

  • Publication . Article . Conference object . Other literature type . 2018
    Open Access English
    Authors: 
    Massimiliano Pepe; Sebastiano Ackermann; Luigi Fregonese; Francesco Fassi; Andrea Adami;
    Country: Italy

    Abstract. In recent years, special digital cameras called “action camera” or “action cam”, have become popular due to their low price, smallness, lightness, strength and capacity to make videos and photos even in extreme environment surrounding condition. Indeed, these particular cameras have been designed mainly to capture sport actions and work even in case of dirt, bumps, or underwater and at different external temperatures. High resolution of Digital single-lens reflex (DSLR) cameras are usually preferred to be employed in photogrammetric field. Indeed, beyond the sensor resolution, the combination of such cameras with fixed lens with low distortion are preferred to perform accurate 3D measurements; at the contrary, action cameras have small and wide-angle lens, with a lower performance in terms of sensor resolution, lens quality and distortions. However, by considering the characteristics of the action cameras to acquire under conditions that may result difficult for standard DSLR cameras and because of their lower price, these could be taken into consideration as a possible and interesting approach during archaeological excavation activities to document the state of the places. In this paper, the influence of lens radial distortion and chromatic aberration on this type of cameras in self-calibration mode and an evaluation of their application in the field of Cultural Heritage will be investigated and discussed. Using a suitable technique, it has been possible to improve the accuracy of the 3D model obtained by action cam images. Case studies show the quality and the utility of the use of this type of sensor in the survey of archaeological artefacts.

  • Open Access English
    Authors: 
    Carlo Giannattasio; Lia Maria Papa; Pierpaolo D'Agostino;
    Publisher: Copernicus Publications
    Country: Italy

    Abstract. This study is part of a more complex research aimed at establishing guidelines to simplify the digitalization process used to manage existing building heritage. Working in a BIM environment, this paper will present two different algorithms: a modelling algorithm, a data analysis algorithm, and relative applications in the digitalization of a contemporary building. All the archival data required for the digitalization process was collected and those in two-dimensional digital vector format have aroused particular interest because they enabled initiation of the reconstruction process of the BIM model. One of the two algorithms allowed us to identify recurrent elements in a CAD drawing, based on geometric 2D primitives. The final outcome of the first phase involves quadrilateral or circular surfaces and can be viewed in algorithmic environment. The next phase involves applying a unique coloured sign to the identified sections and then export them all in a BIM software. This tool produced unexpected positive results: the presence of a small coloured grid emphasized the discrepancies created between the two-dimensional drawings and the vertical elements. We were thus able to identify the objects with these inconsistencies: they were verified using accurate surveys and then corrected.

  • Open Access English
    Authors: 
    Mara Capone;
    Publisher: Copernicus Publications

    Abstract. Over the past few years experimental systems have been developed to introduce new ways of enjoying cultural heritage using digital media. Technology had a lead role in this testing ground increasing the need to develop new way of communication according to contemporary iconography culture. Most applications are aimed at creating online databases that allow free access to information, that helps to spread the culture and simplify the study about cultural heritage. To this type of application are added others, which are aimed at defining new and different ways of cultural heritage enjoyment. Very interesting applications are those regarding to reconstruction of archaeological landscape. The target of these applications is to develop a new level of knowledge that increases the value of the archaeological find and the level of understanding. In fact, digital media can bridge the gap of communication associated to archaeological find: the virtual simulation offers the possibility to put it in the context and it defines a new way to enjoy the cultural heritage. In most of these cases the spectacular and recreational factor generally prevails. We believe that experimentation is needed in this area, particularly for the development of Urban Archaeology. In this case, another trouble to enjoy is added to the lack of communication, typical of archaeological finds, because it is "hidden" in an irreversible way: it is under water or under city. So, our research is mainly oriented to define a methodological path to elaborate a communication strategy to increase interest about Urban Archaeology.

  • Publication . Article . Other literature type . 2018
    Open Access English
    Authors: 
    E. Folmer; E. Folmer; W. Beek; W. Beek; W. Beek; L. Rietveld; L. Rietveld;
    Country: Netherlands

    Abstract. The Land Registry and Mapping Agency of the Netherlands (‘Kadaster’ in Dutch) is developing an online publication platform for sharing its geospatial data assets called KDP (`Kadaster Data Platform’ in Dutch). One of the main goals of this platform is to better share geospatial data with the wider, web-oriented world, including its developers, approaches, and standards. Linked Open Data (W3C), GeoSPARQL (OGC), and Open APIs (OpenAPI Specification) are the predominant standardized approaches for this purpose. As a result, the most important spatial datasets of the Netherlands – including several key registries – are now being published as Linked Open Data that can be accessed through a SPARQL endpoint and a collection of REST APIs. In addition to providing raw access to the data, Kadaster Data Platform also offers developers functionalities that allow them to gain a better understanding about the contents of its datasets. These functionalities include various ways for viewing Linked Data . This paper focuses on two of the main components the Kadaster Data Platform is using for this purpose: FacetCheck and Data Stories.

  • Publication . Other literature type . Article . 2018
    Open Access
    Authors: 
    Vit Vozenilek; L. Belka;
    Publisher: Copernicus GmbH

    Abstract. Image maps have become very popular and frequently produced cartographical outputs during recent years. However, the unambiguous terminology, definitions, content and appearance specification have not been widely researched. The paper deals with the new definition of image map, its components delineation, and basic classification. The authors understand the image map as a special map portraying geographic space in a particular cartographical projection and map scale, where its content consists of two basic components – image and symbol components. Image component is represented by remote sensing image(s), while symbol component is represented by cartographical symbols. An image map has to have three essential attributes: cartographical projection, map scale and symbol component by means of map language. The authors also present aspects of topographic and thematic image maps.

  • Open Access English
    Authors: 
    Agustí Costa-Jover; Sergio Coll-Pla; J. Queral Llaberia; D. Moreno García; A. Gas Llatge;

    Abstract. The development of massive data captures techniques (MDC) in recent years, such as the Terrestrial Laser Scanner (TLS), raises the possibility of developing new assessment procedures for architectural heritage. The 3D models that it is able to obtain is a great potential tool, both for conservation purposes and for historical and architectural studies. The paper proposes a simple, non-invasive methodology for the assessment of masonry vaults from point clouds which makes it possible to obtain relevant data about the formal anomalies. The methodology is tested in Tortosa’s Gothic Cathedral’s vaults, where the geometrical differences between vaults, a priori equal, are identified and related with the partially known construction phases. The procedure can be easily used on any other vaulted construction of any kind, but is especially useful to deal with the complex geometry of Gothic masonry vaults.

  • Publication . Article . Other literature type . Conference object . 2018
    Open Access
    Authors: 
    V. Cappellini; Massimiliano Campi;
    Publisher: Copernicus GmbH

    Abstract. The article reports the approach developed for the 3D modeling of an important monument in Naples: San Carlo Theatre, the oldest Opera House in Europe recognized as a UNESCO World Heritage site.

  • Publication . Article . Conference object . Other literature type . 2018
    Open Access
    Authors: 
    S. Del Pizzo; Salvatore Troisi;
    Country: Italy

    The modeling and the three-dimensional reconstruction of objects, structures or sites of interest assume an important role in the field of cultural heritage. Making copies of virtual objects is very significant for their consultation, storage, disclosure and restoration. Nowadays the modeling of a free-form object can be attained both by laser-scanning and by digital photogrammetry. With the use of the last methodology dense point clouds can be obtained through elaborate process steps. The purpose of this study is to provide input to the automation of some phases of these processes. Recent advances in the Structure from Motion community have greatly extended the feature matching and triangulation capabilities to enable significantly larger datasets to be used for the reconstruction of the relative orientation of the cameras and, consequently, of the artefacts. In this paper a methodology to automatically orient a set of images is presented, such methodology makes use of algorithms for feature extraction coming from computer vision community and allows to easily recognize a large amount of homologous points on a set of images in a completely automatic way. The above said methodology has been adopted for the automatic orienting of some sequences of images relative to several interesting sites from the perspective of cultural heritage.

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