Bishkek city, Kazakhstan, 2013 (derived from Pleiades tristereo imagery)

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This dataset is a pointcloud over Bishkek city, Kyrgyzstan, derived from Pleiades tristereo optical imagery acquired in 2013. The pointcloud was produced using Agisoft Metashape (version 1.6.2). The raw imagery was 0.5m resolution Pleiades tristereo imagery, which was processed in Agisoft with ‘High’ accuracy alignment parameters, and the depth maps were produced using ‘Ultra high’ quality and ‘Mild’ filtering. The original 202,403 tiepoints were filtered down to 153,326 before creation of the dense clouds by removing tie-points with a projection accuracy of greater than 5. The image has been cropped slightly at the edges to remove edge artefacts. More information about this dataset, the images that were used to construct the pointcloud and how the co-registration was performed can be found in the associated manuscript: Amey RMJ, Elliott J, Watson C, Walker R, Pagani M, Silva V, Hussain E, Abdrakhmatov K, Baikulov S, Tilek kyzy G, Improving urban seismic risk estimates for Bishkek, Kyrgyzstan, from improved geological knowledge of hazards, submitted 2021 This work has been supported by the the Royal Society GCRF Challenge grant (CHG\R1\170038) and the NERC Innovation award (grant number NE/S013911/1). JRE is supported by a Royal Society University Research fellowship (UF150282), CSW is funded by COMET and the GCRF Urban Disaster Risk Hub (NE/S009000/1), RTW is supported through the NATO Science for Peace and Security Program (Multi-year project G5690).

opentopoID: OTDS.092021.32643.1
Platform: Structure from Motion / Photogrammetry
Data Format: Point Cloud
Dataset Acknowledgement: We gratefully acknowledge the Committee for Earth Observing Satellites (CEOS) Seismic Demonstrator for providing Pléiades stereo imagery along the northern Tien Shan, and some Pleiades imagery was purchased through the NERC/ESRC Earthquakes without Frontiers (EwF) consortium. Pleiades images made available by CNES in the framework of the CEOS Working Group for Disasters. © CNES (2012,2014,2017), and Airbus DS, all rights reserved. Please note that this data is not permitted for commercial use.
Dataset Citation: Amey, R., Scott, C., Elliott, J., Walker, R. (2021). Bishkek city, Kazakhstan, 2013 (derived from Pleiades tristereo imagery). Distributed by OpenTopography. https://doi.org/10.5069/G92R3PW6 Accessed: 2022-09-30
Survey Date: 02/11/2013
Survey Area: 353.69 km2
Publication Date: 09/27/2021
Number of lidar returns: 1,822,453,041 pts
Point Density: 5.15 pts/m2
Coordinates System:
Horizontal: WGS 84 / UTM zone 43N [EPSG: 32643]

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