Fig. 5
From: Automated tracking of lava lake level using thermal images at Kīlauea Volcano, Hawai’i
Online “dashboard” display of recent lava level results, combining the automated tracking and laser rangefinder calibration measurements. In the lava-level plots on the right, the light gray line is the raw lava level measurement, and the red line is the smoothed version. Blue circles are laser rangefinder points. The conversion between image pixel measurements of lake depth and actual depth in meters below the rim of the Overlook crater is based on the manual pixel correlation shown at the lower left plot. This dashboard display is automatically updated every fifteen minutes