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Análisis de límites de detección y cálculo de volumen de desprendimientos en escarpes rocosos mediante datos LiDAR y fotogramétricos
| Content Provider | Semantic Scholar |
|---|---|
| Author | Quintero, Montaño Elena, María |
| Copyright Year | 2019 |
| Abstract | This paper presents an analysis of the limits of detection and calculation of volume of rockfalls, through the use of LiDAR and photogrammetry. Also, part of the study, focuses on the comparison of two different instruments for the acquisition of photogrammetric data. The pilot study area is located at the Puigcercós cliff (Pallars Jussà). The behavior of this cliff, has been widely studied in preliminary investigations through the use of LiDAR technology. However, one of the limitations of this technique is the high cost of acquiring and processing the data and the temporary restrictions that this implies. The use of photogrammetry in this type of research, is not widely developed, however, offers the possibility of data acquisition at a much lower cost than the LiDAR. For this reason, it is to be determined the cost-benefit ratio of this technique, taking into account the high precision of the results obtained with LiDAR technology. For the analysis of the information, it is carried out: 1) Sensitivity analysis and 2) Quantitative analysis of the volumes of the rockfalls identified by means of the analysis of data acquired in different dates (2018 vs 2019). Through the observed results and the analysis of the calculations of volumes the rockfalls with photogrammetry, it is obtained that this technique provides results comparable to those obtained by LiDAR technology. Additionally, it is found that the use of better resolution photographic cameras for photogrammetry, does not necessarily imply contribution to a better definition of the geometries for the creation of optimum quality point clouds. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://diposit.ub.edu/dspace/bitstream/2445/139667/1/TFM%20Maria%20Elena%20Monta%C3%B1o%20Quintero.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
