High speed videometric monitoring of rock breakage

Allemand, J, Shortis, M and Elmouttie, M 2018, 'High speed videometric monitoring of rock breakage', in F. Remondino, I. Toschi, and T. Fuse (ed.) ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information, Riva del Garda, Italy, 4-7 June 2018, pp. 17-24.


Document type: Conference Paper
Collection: Conference Papers

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Title High speed videometric monitoring of rock breakage
Author(s) Allemand, J
Shortis, M
Elmouttie, M
Year 2018
Conference name ISPRS TC II Mid-term Symposium Towards Photogrammetry 2020 (Volume IV-2)
Conference location Riva del Garda, Italy
Conference dates 4-7 June 2018
Proceedings title ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information
Editor(s) F. Remondino, I. Toschi, and T. Fuse
Publisher Copernicus
Place of publication Germany
Start page 17
End page 24
Total pages 8
Abstract Estimation of rock breakage characteristics plays an important role in optimising various industrial and mining processes used for rock comminution. Although little research has been undertaken into 3D photogrammetric measurement of the progeny kinematics, there is promising potential to improve the efficacy of rock breakage characterisation. In this study, the observation of progeny kinematics was conducted using a high speed, stereo videometric system based on laboratory experiments with a drop weight impact testing system. By manually tracking individual progeny through the captured video sequences, observed progeny coordinates can be used to determine 3D trajectories and velocities, supporting the idea that high speed video can be used for rock breakage characterisation purposes. An analysis of the results showed that the high speed videometric system successfully observed progeny trajectories and showed clear projection of the progeny away from the impact location. Velocities of the progeny could also be determined based on the trajectories and the video frame rate. These results were obtained despite the limitations of the photogrammetric system and experiment processes observed in this study. Accordingly there is sufficient evidence to conclude that high speed videometric systems are capable of observing progeny kinematics from drop weight impact tests. With further optimisation of the systems and processes used, there is potential for improving the efficacy of rock breakage characterisation from measurements with high speed videometric systems.
Subjects Photogrammetry and Remote Sensing
Keyword(s) Rock breakage
Comminution
High speed video
Stereo-photogrammetry
DOI - identifier 10.5194/isprs-annals-IV-2-17-2018
Copyright notice © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License.
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