Figure 2

Comparison among (a) a Google (DigitalGlobe), and (b) a Pleiades satellite image (0.7 m resolution), and (c) the UAV image obtained by this study (0.016 m resolution).

Comparison among (a) a Google (DigitalGlobe), and (b) a Pleiades satellite image (0.7 m resolution), and (c) the UAV image obtained by this study (0.016 m resolution).