Integrated Imaging Approaches Supporting the Excavation Activities. Multi-Scale Geospatial Documentation in Hierapolis (Tk)

Abstract

ABSTRACT:The paper focuses on the exploration of the suitability and the discretization of applicability issues about advanced surveying integrated techniques, mainly based on image-based approaches compared and integrated to range-based ones that have been developed with the use of the cutting-edge solutions tested on field. The investigated techniques integrate both technological devices for 3D data acquisition and thus editing and management systems to handle metric models and multi-dimensional data in a geospatial perspective , in order to innovate and speed up the extraction of information during the archaeological excavation activities. These factors, have been experienced in the outstanding site of the Hierapolis of Phrygia ancient city (Turkey), downstream the 2017 surveying missions, in order to produce high-scale metric deliverables in terms of high-detailed Digital Surface Models (DSM), 3D continuous surface models and high-resolution orthoimages products. In particular, the potentialities in the use of UAV platforms for low altitude acquisitions in aerial photogrammetric approach, together with terrestrial panoramic acquisitions (Trimble V10 imaging rover), have been investigated with a comparison toward consolidated Terrestrial Laser Scanning (TLS) measurements. One of the main purposes of the paper is to evaluate the results offered by the technologies used independently and using integrated approaches. A section of the study in fact, is specifically dedicated to experimenting the union of different sensor dense clouds: both dense clouds derived from UAV have been integrated with terrestrial Lidar clouds, to evaluate their fusion. Different test cases have been considered, representing typical situations that can be encountered in archaeological sites.

Geomatics Advanced Testings Flanking Archaeological Research. A Noteworthy Area in the Northern Necropolis of Hierapolis of Frigia (Tk)

“…The main processing parameters of this dataset are reported in Table 7. To further examine and validate the proposed approaches a TLS dataset was used as ground reference elements as usual in this kind of experimental text (Spanò, Chiabrando, Sammartano, Teppati Losè, 2018).…”

From 3d Metric Survey to Hbim Model. Testing of Different Scan2bim Approaches for the Archaeological Documentation

“…Since its early definition, the archaeological practice has been concerned with the documentation problem (Remondino & Campana, 2014), being this the results of a stratigraphical excavation or the study of standing historical buildings. In the last decades, the geomatics community of researchers has been working to support the archaeological documentation process with the most up-to-date instruments and methodologies (Balletti et al, 2015;Drap et al, 2017;Hatzopoulos et al, 2017;Spanò et al, 2018). A consistent part of this work is the promotion of opportunities to create synergies between students and researchers of both disciplines.…”

SFM-Based 3d Reconstruction of Heritage Assets Using Uav Thermal Images

“…The flexibility of the new instruments and techniques -which have been developed in the last few years -represents a key factor (Spanò et al 2018) since in some cases, for many reasons (size of the object, morphology, materials and many others), the same documentation strategy cannot be efficiently applied to case studies characterised by not homogeneous features, as underlined by the results of several research experiences. For this reason, in the framework of heritage documentation tailored solutions are usually required, since in many cases a similar approach represents the optimal strategy to effectively face the various issues intrinsically connected to the specific features characterising each asset belonging to our built heritage.…”