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Table 6 Geometric invariant classification comparative study of the QFr-RHFMs, QFr-GLMs, QFr-PSTs, and QFr-PCTs

From: Quaternion fractional-order color orthogonal moment-based image representation and recognition

CCPs (%) KNN

 

k=12

k=28

SNR (dB)

QFr-RHFM s[3]

QFr-GLMs

QFr-PST s[24]

QFr-PCT s[24]

QFr-RHFM s[3]

QFr-GLMs

QFr-PST s[24]

QFr-PCT s[24]

∞

97.8

100

96.3

97.2

100

100

100

100

25

94.2

100

92.2

93.6

96.3

100

98.7

97.1

20

89.8

96.4

82.4

83.9

90.3

99.6

92.3

91.8

15

85.4

89.8

80.3

81.1

89.5

96.3

90.3

88.8

10

68.9

79.2

60.2

64.3

77.6

85.9

84.1

82.7

5

50.2

67.7

51.1

55.8

59.8

69.3

62.4

61.9

0

25.6

31.2

23.6

24.1

35.8

40.9

30.3

29.8