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Michael Bleier
University of Würzburg
9Publications
3H-index
14Citations
Publications 9
Newest
#1Michael Bleier (University of Würzburg)H-Index: 3
#2Carlos AlmeidaH-Index: 6
Last.Andreas Nüchter (University of Würzburg)H-Index: 35
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Abstract. The project Viable Alternative Mine Operating System (iVAMOS!) develops a novel underwater mining technique for extracting inland mineral deposits in flooded open-cut mines. From a floating launch and recovery vessel a remotely-operated underwater mining vehicle with a roadheader cutting machine is deployed. The cut material is transported to the surface via a flexible riser hose. Since there is no direct intervisibility between the operator and the mining machine, the data of the sens...
1 CitationsSource
#2Michael BleierH-Index: 3
Last.Andreas NüchterH-Index: 35
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Oct 1, 2018 in IROS (Intelligent Robots and Systems)
#1Jose Miguel Almeida (International Student Exchange Programs)H-Index: 11
#2Alfredo Martins (International Student Exchange Programs)H-Index: 11
Last.Eduardo Silva (International Student Exchange Programs)H-Index: 10
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This paper presents the positioning, navigation and awareness (PNA) system developed for the Underwater Robotic Mining System of the !VAMOS! project [1]. It describes the main components of the !VAMOS! system, the PNA sensors in each of those components, the global architecture of the PNA system, and its main subsystems: Position and Navigation, Realtime Mine Modeling, 3D Virtual reality HMI and Real-time grade system. General results and lessons learn during the first mining field trial in Lee ...
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In this work we look at 3D acquisition of semi-submerged structures with a triangulation based underwater laser scanning system. The motivation is that we want to simultaneously capture data above and below water to create a consistent model without any gaps. The employed structured light scanner consist of a machine vision camera and a green line laser. In order to reconstruct precise surface models of the object it is necessary to model and correct for the refraction of the laser line and came...
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#1Andreas NüchterH-Index: 35
#2Michael BleierH-Index: 3
Last.Peter JanottaH-Index: 1
view all 4 authors...
1 CitationsSource
#1Michael BleierH-Index: 3
#2Andre DiasH-Index: 8
Last.Andreas NüchterH-Index: 35
view all 8 authors...
1 Citations
#1Michael BleierH-Index: 3
#2Andre Dias (P.PORTO: Polytechnic Institute of Porto)H-Index: 8
Last.Andreas Nüchter (University of Würzburg)H-Index: 35
view all 8 authors...
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 postprocessing 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...
4 CitationsSource
Abstract. This paper shows how to use the result of Google's SLAM solution, called Cartographer, to bootstrap our continuous-time SLAM algorithm. The presented approach optimizes the consistency of the global point cloud, and thus improves on Google’s results. We use the algorithms and data from Google as input for our continuous-time SLAM software. We also successfully applied our software to a similar backpack system which delivers consistent 3D point clouds even in absence of an IMU.
3 CitationsSource
#1Michael BleierH-Index: 3
#2Ferdinand Settele (Munich University of Applied Sciences)H-Index: 1
Last.Klaus Shcilling (University of Würzburg)H-Index: 16
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Abstract This paper presents models for the risk assessment and generation of flight paths, which support the automatic deployment of emergency parachutes for unmanned aerial vehicles in emergencies due to loss of propulsion. Based on a risk analysis of the area underneath the flight path, suitable deployment positions are identified, which minimize the chance of endangering humans on the ground, property damage and loss of the air vehicle. Additionally, the flight path selection is guided by co...
4 CitationsSource
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