Data Integration Acquired From Micro-Uav and Terrestrial Laser Scanner for the 3d Mapping of Jesuit Ruins of São Miguel Das Missões

Abstract

ABSTRACT:The Jesuit Missions the Guaranis were one of the great examples of cultural, social, and scientific of the eighteenth century, which had its decline from successive wars that followed the exchange of territories domain occupied by Portugal and Spain with the Madrid Treaty of January 13, 1750. One of the great examples of this development is materialized in the ruins of 30 churches and villages that remain in a territory that now comprises part of Brazil, Argentina and Paraguay. These Churches, São Miguel das Missões is among the Brazilian ruins, the best preserved. The ruins of São Miguel das Missões were declared a UNESCO World Cultural Heritage in 1983 and the Institute of National Historical Heritage (IPHAN) is the Brazilian Federal agency that manages and maintains this heritage. In order to produce a geographic database to assist the IPHAN in the management of the Ruins of São Miguel das Missões it was proposed a three-dimensional mapping of these ruins never performed in this location before. The proposal is integrated data acquired from multiple sensors: two micro-UAV, an Asctec Falcon 8 (rotary wing) and a Sensefly e-Bee (fixed wing); photos from terrestrial cameras; two terrestrial LIDAR sensors, one Faro Focus 3D S-120 and Optec 3D-HD ILRIS. With this abundance of sensors has been possible to perform comparisons and integration of the acquired data, and produce a 3D reconstruction of the church with high completeness and accuracy (better than 25 mm), as can be seen in the presentation of this work

Advances in Geodesy and Geoinformation

“…The accuracy of such a study may be as high as 2-3 cm and depends on the precision of the selection of common points and the accuracy of determining the coordinates of reference points in the field (Aicardi et al, 2016). In the 3D cartographic presentation, it is possible to precisely, accurately and completely present the condition of the existing object in combination with a reconstruction generated on the basis of TLS data, digital photos or other source materials (Reiss et al, 2016, Klapa, 2021.…”

Drones and Real-Time Kinematic Base Station Integration for Documenting Inaccessible Ruins: A Case Study Approach

“…The starting point for any intervention on ruins is certainly a historical analysis followed by a survey that allows us to know and correctly determine and interpret their shape, spatial organisation, materials, and degradation [14]. Articles dealing with the documentation of ruined buildings can be found in the scientific literature [14][15][16][17][18][19][20][21], especially when the buildings are of architectural significance.…”

“…On a different scale, the authors of [17] investigated an area that includes the ruins of 30 churches and villages in a territory covering Brazil, Argentina, and Paraguay. They then focused on the ruins of one church and carried out an integrated survey in order to produce a geographic database to assist its management.…”