# Survey Solutions for 3D Acquisition and Representation of Artificial and Natural Caves
## 5 Conclusions
(2018) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] Indoor photogrammetry using UAVs with protective structures: Issues and precision tests. In Proceedings of the International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Istanbul, Turkey, 18-21 March 2018; Volume XLI-3/W4. [CrossRef]
* [PERSON] et al. (2020) [PERSON] [PERSON]; [PERSON]; [PERSON] Identifying and mapping potentially adverse discontinuities in underground excavations using thermal and multispectral UAV imagery. _Eng. Geol._**2020**, _266_, 105470. [CrossRef]
* [PERSON] et al. (2020) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON] Surveying and high-resolution topography of the ochtna aragonite cave based on tls and digital photogrammetry. _Appl. Sci._**2020**, _10_, 4633. [CrossRef]
* [PERSON] (2008) [PERSON] Trends for digital aerial mapping cameras. _Int. Arch. Photogram. Rem. Sens. Spatial Inf. Sci. (ISPRS)_**2008**, _28_, 551-554. * [PERSON] et al. (2020) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] High resolution digital 3D modelling of subsurface morphological structures of Koutouki' Cave, Greece. _AC_**2020**, _49_. Available online: [[https://ojs.zrc-sazu.si/carsologica/article/view/7708](https://ojs.zrc-sazu.si/carsologica/article/view/7708)]([https://ojs.zrc-sazu.si/carsologica/article/view/7708](https://ojs.zrc-sazu.si/carsologica/article/view/7708)) (accessed on 24 March 2021). * [PERSON] et al. (2019) [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON] Re-enacting the sequence: Combined digital methods to study a probabilistic cave. _Archaol. Anthrol. Sci._**2019**, _11_, 2805-2819. [CrossRef]
* [PERSON] et al. (2019) [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] Structure from Motion Multisource Application for Landslide Characterization and Monitoring: The Champlas du Col Case Study, Sestiere, North-Western Italy. _Sensors_**2019**, _19_, 2364. [CrossRef] [PubMedMed]
* [PERSON] et al. (2020) [PERSON]; [PERSON] [PERSON]; [PERSON] Reliability and Uncertainties of the Analysis of an Unstable Rock Slope Performed on RPAS Digital Outcrop Models: The Case of the Gallivaggio Landslide (Western Alps, Italy). _Remote Sens._**2020**, _12_, 1635. [CrossRef]
* [PERSON] et al. (2020) [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] Investigating the susceptibility to failure of a rock cliff by integrating Structure-from-Motion analysis and 3D geomechanical modelling. _Remote Sens._**2020**, _12_, 3994. [CrossRef]
* [PERSON] and [PERSON] (2003) [PERSON]; [PERSON] _Multiple View Geometry in Computer Vision_; Cambridge University Press: Cambridge, UK, 2003. * [PERSON] et al. (2016) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Compact, real-time localization without reliance on infrastructure. In Proceedings of the 3 rd Annual Microsoft Indoor Localization Competition, Vienna, Austria, 10-11 April 2016. * [PERSON] and [PERSON] (2018) [PERSON]; [PERSON] Laser-visual-inertial odometry and mapping with high robustness and low drift. _J. Field Robot._**2018**, _35_, 1242-1264. [CrossRef]
* [PERSON] (2021) [PERSON] Performance evaluation of terrestrial laser scanners--A review. _Meas. Sci. Technol._**2021**, _32_, 072001. [CrossRef]
* [PERSON] et al. (2009) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] A comparison of loop closing techniques in monocular SLAM. _Robot. Auton. Syst._**2009**, _57_, 1188-1197. [CrossRef]
* [PERSON] and [PERSON] (2020) [PERSON]; [PERSON] A review of visual-LiDAR fusion based simultaneous localization and mapping. _Sensors_**2020**, _20_, 2068. [CrossRef] [PubMed]