First-order texture

Standard deviation or variance of gray levels in a region in the neighborhood of a pixel are examples of measures of first-order texture.

• In the search engine of the Processing Toolbox, type neighbors and select r.neighbors under Raster of GRASS GIS 7 commands.
• Under the Parameters tab, select a single band file as input layer.
• Select stddev from the drop-down list Neighborhood operation.
• Select an odd integer number as Neighborhood size in pixels.
• Tick Use circular neighborhood.

Figure A: Input image: Sentinel-2 synthesis image based on 4 10m bands, (University Göttingen Campus North)

Figure B: Output image: Standard deviation texture of Sentinel-2 synthesis image (University Göttingen Campus North)