Abstract
The planning of mining operations in water filled
open-pit mines requires detailed bathymetry to
create a mine plan and assess the involved
risks. This paper presents post- processing
techniques for creating an improved 3D model from a
survey carried out using an autonomous surface
vehicle with a multibeam sonar and a GPS/INS
navigation system. Inconsistencies of the created
point cloud as a result of calibration errors or GPS
signal loss are corrected using a continuous-time
simultaneous localization and mapping (SLAM)
solution. Signed distance function based mapping is
employed to fuse the measurements from multiple runs
into a consistent representation and reduce sensor
noise. From the signed distance function model we
reconstruct a 3D surface mesh. We use this terrain
model to establish a virtual reality scene for
immersive data visualization of the mining
operations for testing and planing during
development. Results of the proposed approach are
demonstrated on a dataset captured in an abandoned
submerged inland mine.
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