3D MODELLING AND ACCURACY ASSESSMENT OF GRANITE QUARRY USING UNMMANNED AERIAL VEHICLE
The unmanned aerial vehicles (UAVs) are automated systems whose main characteristic is that can be remotely piloted. This property is especially interesting in those civil engineering works in which the accuracy of the model is not reachable by common aerial or satellite systems, there is a diffic...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2012-07-01
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| Series: | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-3/37/2012/isprsannals-I-3-37-2012.pdf |
| Summary: | The unmanned aerial vehicles (UAVs) are automated systems whose main characteristic is that can be remotely piloted. This
property is especially interesting in those civil engineering works in which the accuracy of the model is not reachable by common
aerial or satellite systems, there is a difficult accessibility to the infrastructure due to location and geometry aspects, and the
economic resources are limited. This paper aims to show the research, development and application of a UAV that will generate georeferenced
spatial information at low cost, high quality, and high availability. In particular, a 3D modelling and accuracy assessment
of granite quarry using UAV is applied. With regard to the image-based modelling pipeline, an automatic approach supported by
open source tools is performed. The process encloses the well-known image-based modelling steps: calibration, extraction and
matching of features; relative and absolute orientation of images and point cloud and surface generation. Beside this, an assessment
of the final model accuracy is carried out by means of terrestrial laser scanner (TLS), imaging total station (ITS) and global
navigation satellite system (GNSS) in order to ensure its validity. This step follows a twofold approach: (i) firstly, using singular
check points to provide a dimensional control of the model and (ii) secondly, analyzing the level of agreement between the realitybased
3D model obtained from UAV and the generated with TLS. The main goal is to establish and validate an image-based
modelling workflow using UAV technology which can be applied in the surveying and monitoring of different quarries. |
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| ISSN: | 2194-9042 2194-9050 |