The Plugin SCPLuca developed a plugin called Semi-Automatic Classification Plugin or in short SCP:
The Semi-Automatic Classification Plugin (SCP) is a free open source plugin for QGIS that allows for the semi-automatic classification (also supervised classification) of remote sensing images. Also, it provides several tools for the pre processing of images, the post processing of classifications, and the raster calculation.Once a domain of ERDAS, Matlab, R and other more numeric orientated software packages, SCP makes it possible to extract vector data from raster images in a convenient way: You can download it via the plugin handler in QGIS.
Landsat and QGISIn the newest version it uses the latest developments of Amazon which now offers Landsat data via direct access. Once installed, you can search, display and download Landsat 8 images via the SCP plugin directly in QGIS… The plugin has two main windows:
- SCP: Classification – Here you can do your fancy classification steps and also download of data.
- SCP: ROI creation – Here you define your Region of Interest.