Table 4 Extraction results of the percentage of frost area on the leaf surface.

From: Multi-component gradient enhancement for accurate frost detection and quantification on leaf surfaces

Methods

Percentage of frost area on leaf surface (%)

Average precision rate Ra (%)

Low

Medium

High

Reference value

25.79

42.97

60.01

-

Original HSV algorithm

21.14

49.06

57.11

87.65

Exg algorithm

19.27

40.65

57.05

88.12

MCGE-frost

24.38

43.41

60.25

97.70

  1. Note: “Low” represents frost level I, “Medium” represents frost level II, “High” represents frost level III.
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