Table 1 Absolute error in estimating modulus and phase of the flow
From: Short range tracking of rainy clouds by multi-image flow processing of X-band radar data
Simulation parameters | Lucas-Kanede approach | Horn-Schunck approach | ||||||
|---|---|---|---|---|---|---|---|---|
Modulus (px/ΔT) | Angle (°) | Modulus (px/ΔT) | Angle (°) | |||||
F | No F | F | No F | F | No F | F | No F | |
N = 4, SNR = 10 dB | 0.58 ± 0.62 | 0.49 ± 0.54 | 1.0 ± 1.7 | 0.6 ± 0.7 | 0.50 ± 0.59 | 0.41 ± 0.42 | 2.3 ± 2.0 | 2.2 ± 1.7 |
N = 4, SNR = 20 dB | 0.58 ± 0.60 | 0.49 ± 0.53 | 0.9 ± 1.8 | 0.5 ± 1.7 | 0.49 ± 0.57 | 0.39 ± 0.40 | 1.8 ± 1.9 | 1.7 ± 1.5 |
N = 10, SNR = 10 dB | 0.06 ± 0.03 | 0.04 ± 0.04 | 0.2 ± 0.2 | 0.2 ± 0.2 | 0.06 ± 0.03 | 0.07 ± 0.08 | 2.4 ± 3.3 | 1.7 ± 1.9 |
N = 10, SNR = 20 dB | 0.05 ± 0.04 | 0.04 ± 0.03 | 0.2 ± 0.2 | 0.2 ± 0.2 | 0.06 ± 0.03 | 0.07 ± 0.08 | 0.7 ± 0.6 | 0.7 ± 0.5 |