Calibration and Image Processing of Aerial Thermal Image for UAV Application in Crop Water Stress Estimation

Figure 12

Comparisons of the DANS indices of apple trees with different irrigation conditions after calibration with the GPR method: (a) August 7th, 2019; (b) August 13th, 2019; (c) August 22th, 2019; (d) August 29th, 2019.

(a)

(b)

(c)

(d)