High-resolution monitoring of landslides with UAS photogrammetry and digital image correlation

Mugnai, Francesco; Masiero, Andrea; Angelini, R.; Cortesi, I.

doi:10.1080/22797254.2023.2216361

Cited by 1 publication

(2 citation statements)

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“…With regard to the utilization of unmanned aerial systems (UASs) in the monitoring of the Grillo earth flow, we used the acquired aerial images to conduct photogrammetric processing through the well-known SfM technique [45]. The application of SfM photogrammetry to UAS imagery represents an emerging methodology that ensures high spatial resolution and flexible surveying periodicity, both of which are fundamental elements in earth flow monitoring [46][47][48]. Furthermore, UAS photogrammetry facilitates the mapping of remote and impervious areas [46,49,50].…”

Section: (B) Analysis Of the Grillo Earth Flowmentioning

confidence: 99%

“…The application of SfM photogrammetry to UAS imagery represents an emerging methodology that ensures high spatial resolution and flexible surveying periodicity, both of which are fundamental elements in earth flow monitoring [46][47][48]. Furthermore, UAS photogrammetry facilitates the mapping of remote and impervious areas [46,49,50].…”

Section: (B) Analysis Of the Grillo Earth Flowmentioning

confidence: 99%

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The Contribution of Digital Image Correlation for the Knowledge, Control and Emergency Monitoring of Earth Flows

Mazza,

Romeo,

Cosentino

et al. 2023

Geosciences

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Earth flows are complex geological processes that, when interacting with linear infrastructures, have the potential to cause significant damage. Consequently, conducting comprehensive investigations and continuous monitoring are becoming paramount in designing effective mitigation measures and ensuring sustainable risk management practices. The use of digital image correlation (DIC) algorithms for the displacement monitoring of earth flows is a relatively new and growing field with a limited number of dedicated works in the literature. Within this framework, the present paper contributes by evaluating DIC techniques at several earth flow sites. These assessments were founded upon data obtained from both low-cost and multi-platform sensors, used to assess the displacement field, pinpointing the most active sectors, and gauging their rates of movement during different kinematic phases. In this regard, the highest localized movement velocities reached in the Pietrafitta (0.01 m/day) and Grillo (0.63 m/day) earth flows experience different ongoing kinematic processes. The versatility of these techniques is notable, manifesting in the ease of installation, cost-effectiveness, and adaptability to various platforms. The proven reliability in terms of maximum accuracy (1 pixel) and sensitivity (0.05 m) lays the foundation for the extensive use of the presented techniques. The amalgamation of these attributes positions DIC techniques as competitive, adaptable, and readily deployable tools in earth flow studies.

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