NSW Imagery Hub : Introduction to Using and Analysing Downloaded Satellite Imagery
This webinar is highly recommended for those working in NSW State and Local Government organisations who want to learn how to use and/or analyse downloaded satellite imagery from multiple sources—including PlanetScope, SPOT, and Sentinel-2—using QGIS.
In the first hour we will cover:
- Introduction
- Introduction to Imagery Hub
- Overview of available satellite data
- How to access data
- Understanding Downloaded Imagery
- Imagery & Metadata:
- Overview of raster data
- Interpreting metadata to verify image quality before analysis.
- File and folder structure - Understanding the file architecture of downloaded rasters and how bands are assigned in QGIS (e.g., UDM).
- Raster Manipulation and Image Enhancement
- Imagery & Metadata:
- Band Reordering & Visualisation:
- Band Combinations; True Colour (RGB), False-colour Infrared (CIR) and Short-Wave Infrared (SWIR).
- Data Management:
- Clipping and mosaicking raster data
- Export Optimisation
- Live Demo
- Q&A
Bonus Content (Final 15mins - optional advanced content)
- Spectral Analysis and/or Land Cover Classification
- The Raster Calculator: Practical application of band math for environmental monitoring.
- Spectral Indices (NDVI,NDWI)
- Semi-Supervised Classification (Land Cover Classification)