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Fig. 15 | Journal of Applied Volcanology

Fig. 15

From: Volcanic plume height monitoring using calibrated web cameras at the Icelandic Meteorological Office: system overview and first application during the 2021 Fagradalsfjall eruption

Fig. 15

Example showing plotting and exporting plume heights (A) Interface for saving, graphing, exporting, and deleting plume heights. Data from multiple cameras can be plotted together, and clicking a point on the graph jumps to that image with the vent location and plume height which are saved for each point. All data (camera names, dates, vent locations, plume heights) can be exported as .csv format. (B) Example measuring plume heights from a camera with strong lens distortion, illustrated by the curved projection of the guidelines onto the image, which are straight in three dimensions, illustrating the importance of accurately constraining the distortion coefficients

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