Table 2 Image sensitivity analysis.

From: Study on the influence of revetment on the evolution law of river channel morphology in the wandering section of Tarim river

Threshold value

Observation accuracy (Po)

Expected accuracy

(Pe)

Kappa coefficient

(k)

0

0.85

0.45

0.73

0.1

0.88

0.48

0.77

0.2

0.90

0.50

0.80

0.3

0.87

0.52

0.73

Back to article page