Fig. 2
From: Exposed soil and mineral map of the Australian continent revealing the land at its barest

Test area at different time epochs compared to the Barest Earth and Most Vegated outputs. The local study area at 6 different observation times (a–f) compared to g the Most Vegated output and h the Barest Earth output (Landsat 30+ year). The Most Vegated output is generated by inverting the Barest Earth algorithm to get the opposite response. The observation times are: a 2006–02–10, b 2009–05–09, c 2011–08–26, d 2013–05–20, e 2016–02–06, f 2016–11–04. Images are displayed with red 0.64–0.67 µm, green 0.53–0.59 µm and blue 0.45–0.51 µm in the red, green and blue image channels. This area is located at 35°18′49.0″S 149°10′23.6″E. We used a 12-year stack (January 2005–January 2017) comprised of 616 scenes.