Watch the webinar hosted by METOS SA to learn more about climate smart agriculture (CSA) and how you can get involved. In addition to the TerraClim project, also being discussed discuss is: Mitigate the impact of climate change Use pesticides more efficiently Maximize crop yields TerraClim | GeoSmart Space | FFG Austrian Research [...]
The CGA is saying farewell to two members of staff this month: GIS & EO Analyst, Divan Vermeulen, who has been with the CGA for more than 10 years, and to GIS & EO Operator, Christiaan Theron, who has worked with us since 2017. Divan is leaving to take up a position as a Developer and GIS Specialist at Kartoza. It has been a great pleasure working with Divan [...]
The CGA would like to extend a warm welcome to Mr James Kapp, who joined us as a GIS & EO Operator at the beginning of May. We are looking forward to working with James who, among other things, will be involved in the database management and spatial interpolation research and development for the [...]
The CGA would like to say farewell to GIS & Earth Observation Analyst Atman Prins, who is leaving to take up a position in Dublin, Ireland. It has been a great pleasure working with Atman and the CGA would like to thank him for his time and dedication during the time he spent at [...]
Drone imagery is often used to calculate vegetation indices such as the normalized difference vegetation index (NDVI) to characterize the condition of individual trees in orchards. Individual trees are often defined as a centroid (centre of the tree), or a circle (buffer around the centroid) or a rectangular area (plot). The NDVI values are then extracted for these entities [...]
By Atman Prins Accurate crop type maps are important for obtaining agricultural statistics such as water use or harvest estimations. The traditional approach to obtaining maps of cultivated fields is by manually digitising the fields from satellite or aerial imagery. However, manual digitising is time-consuming, expensive and subject to human error. Automated remote sensing [...]
We are progressing well with the TerraClim project, and major milestone in the efficiency and accuracy of interpolations.The regional interpolation analysis divided the Western Cape study area into smaller regions using the local terrain and climatic characteristics of that particular region. The regionalisation of temperature interpolation showed improved accuracy of spatial interpolations by up [...]
by Atman Prins The second experiment used the methods developed for the first experiment to perform a five-class classification. The five classes consisted of maize, cotton, groundnuts, orchards and non-agriculture. Sentinel-2 and aerial imagery data were added to the analysis and were compared to LiDAR data. The LiDAR data was obtained from a 2016 [...]
This video is a flyover showing the results of a satellite image (WorldView-2 dated 15 March 2020) analysis of a citrus orchard draped over the Digital Elevation Model of South Africa at 2m resolution (DEMSA2). The analysis was carried out for agricultural research and innovation business CITRII. The automated analysis developed by [...]