Ashworth, P.; Nicholas, A. ; Parsons, D.; Sambrook Smith, G.

Orthomosaic imagery for the South Saskatchewan River, Canada

Data were collected in 2015, 2016 and 2017 to provide high resolution imagery for two sections of the South Saskatchewan River, Canada. Photographs were acquired using conventional aerial plane images with a 0.06m ground resolution, captured at a height of approximately 1500m from a fixed-wing aeroplane with an UltraCamXp sensor.

Imagery was obtained on four occasions (13th May 2015; 2nd Sept 2016; 8th June 2017; and 12th June 2017). The dataset consists of eight orthomosaics; one for each of the two river sections on each of the four dates.

Images were collected as part of NERC project NE/L00738X/1.

Publication date: 2019-10-29

Get the data

This dataset is available under the terms of the Open Government Licence

Format of the dataset : TIFF

You must cite: Ashworth, P.; Nicholas, A. ; Parsons, D.; Sambrook Smith, G. (2019). Orthomosaic imagery for the South Saskatchewan River, Canada. NERC Environmental Information Data Centre. https://doi.org/10.5285/7473d4f9-c9a7-40ad-9f58-e58e25997fc5

 

© Natural Environment Research Council

Where/When

Study area
Temporal extent
2015-05-13    to    2017-06-12

Provenance & quality

This dataset consists of geolocated aerial orthomosaics of the South Saskatchewan River, near Outlook Canada (UTM Easting and Northing coordinates: 356500, 5712400; Latitude and Longitude: 51.5 N, 107.07 W).
Photography was acquired to provide high resolution imagery of the river bed and surrounding valley floor on four occasions (13th May 2015; 2nd Sept 2016; 8th June 2017; and 12th June 2017) and for two separate sections of the river. Images were obtained using conventional aerial plane photography with a 0.06m ground resolution, captured at a height of c. 1500 m from a fixed-wing aeroplane with an UltraCamXp sensor.
The orthomosaic was generated from the aerial photography (using up to 160 individual images for each orthomosaic) by automated image matching using the SfM program Pix4D (https://pix4d.com/) with the ‘large frame’ supplementary software package. Bundle adjustment was undertaken using Pix4D’s key point matching system optimised for aerial nadir imagery. Camera properties were specified using calibration certificates and were not allowed to vary during the calculation.
The orthomosaic image file includes UTM Easting and Northing coordinates that can be viewed by opening the image in a GIS or other image handling software.

Supplemental information

Other useful information regarding this dataset:

Orthomosaics were generated using the SfM program Pix4D

Correspondence/contact details

Professor Andrew Nicholas
University of Exeter
 a.p.nicholas@exeter.ac.uk

Authors

Ashworth, P.
University of Brighton
Nicholas, A.
University of Exeter
Parsons, D.
University of Hull
Sambrook Smith, G.
University of Birmingham

Other contacts

Custodian
Environmental Information Data Centre
 eidc@ceh.ac.uk
Publisher
NERC Environmental Information Data Centre
 eidc@ceh.ac.uk

Additional metadata

Topic categories
Inland Waters
Keywords
Canada,  South Saskatchewan River
INSPIRE Theme
Orthoimagery
Funding
Natural Environment Research Council Award: NE/L00738X/1
Spatial representation type
Raster
Spatial reference system
EPSG::32613
Last updated
27 November 2019 12:43