Fig. 2

Schematic setup (a) to quantify the number of rising bubbles (camera from side and back illumination), (b) to quantify the bursting bubble diameters (camera from top and illumination from side), and (c) to capture the trajectories of resulting jet droplets (camera from front and illumination from side). Raw images of (d) rising bubbles (individual bubbles in green, overlapping bubbles in magenta), (e) bursting bubbles, (f) jet droplets; (g) enlarged view of raw image of rising bubbles and captured bubble shapes (individual bubbles in green, segmented bubbles in magenta); (h) raw video image of jet droplets (left), tracked droplets (center) and processed droplet position (right)