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Article

Optimization of Photogrammetric Flights with UAVs for the Metric Virtualization of Archaeological Sites. Application to Juliobriga (Cantabria, Spain)

by
Julio Manuel de Luis-Ruiz
,
Javier Sedano-Cibrián
,
Raúl Pereda-García
,
Rubén Pérez-Álvarez
* and
Beatriz Malagón-Picón
Cartographic Engineering and Mining Exploitation R+D+i Group, University of Cantabria, 39316 Torrelavega, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(3), 1204; https://doi.org/10.3390/app11031204
Submission received: 8 December 2020 / Revised: 21 January 2021 / Accepted: 23 January 2021 / Published: 28 January 2021
(This article belongs to the Special Issue 3D Virtual Reconstruction for Archaeological Sites)

Abstract

Three-dimensional models are required to virtualize heritage sites. In recent years, different techniques that ease their generation have been consolidated, such as photogrammetry with Unmanned Aerial Vehicles (UAVs). Nonmetric cameras allow relatively inexpensive data collections. Traditional aerial photogrammetry has established methodologies, but there are not commonly used recommendations for the selection of parameters when working with UAV platforms. This research applies the Taguchi Design of Experiments Method, with four parameters (height of flight, forward and lateral overlaps, and inclination angle of the sensor) and three levels (L9 matrix and nine flights), to determine the set that offers the best metric goodness and, therefore, the most faithful model. The Roman civitas of Juliobriga (Cantabria, North of Spain) was selected for this experiment. The optimal flight results of the average signal-to-noise ratio analysis were height of 15 m, forward and lateral overlaps of 80%, and inclination of 0° (nadiral). This research also highlights the noticeable contribution of the inclination in the accuracy of the model with respect to the others, which is 16.4 times higher than that of the less relevant one (height of flight). This leads to propose avoiding inclination angle as a variable, and the sole development of nadiral flights to obtain accurate models.
Keywords: Taguchi; DOE; survey; drone; mission; design; parameters; accuracy Taguchi; DOE; survey; drone; mission; design; parameters; accuracy

Share and Cite

MDPI and ACS Style

Luis-Ruiz, J.M.d.; Sedano-Cibrián, J.; Pereda-García, R.; Pérez-Álvarez, R.; Malagón-Picón, B. Optimization of Photogrammetric Flights with UAVs for the Metric Virtualization of Archaeological Sites. Application to Juliobriga (Cantabria, Spain). Appl. Sci. 2021, 11, 1204. https://doi.org/10.3390/app11031204

AMA Style

Luis-Ruiz JMd, Sedano-Cibrián J, Pereda-García R, Pérez-Álvarez R, Malagón-Picón B. Optimization of Photogrammetric Flights with UAVs for the Metric Virtualization of Archaeological Sites. Application to Juliobriga (Cantabria, Spain). Applied Sciences. 2021; 11(3):1204. https://doi.org/10.3390/app11031204

Chicago/Turabian Style

Luis-Ruiz, Julio Manuel de, Javier Sedano-Cibrián, Raúl Pereda-García, Rubén Pérez-Álvarez, and Beatriz Malagón-Picón. 2021. "Optimization of Photogrammetric Flights with UAVs for the Metric Virtualization of Archaeological Sites. Application to Juliobriga (Cantabria, Spain)" Applied Sciences 11, no. 3: 1204. https://doi.org/10.3390/app11031204

APA Style

Luis-Ruiz, J. M. d., Sedano-Cibrián, J., Pereda-García, R., Pérez-Álvarez, R., & Malagón-Picón, B. (2021). Optimization of Photogrammetric Flights with UAVs for the Metric Virtualization of Archaeological Sites. Application to Juliobriga (Cantabria, Spain). Applied Sciences, 11(3), 1204. https://doi.org/10.3390/app11031204

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