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Table 6 Confusion matrix of the optimal classification result

From: Effectiveness of the spectral area index created by three algorithms for tree species recognition

Type

T1

T2

T3

T4

T5

T6

T7

T8

T9

T10

T11

T12

T13

T14

T15

T16

Grass

T1

4839

0

76

24

0

43

4

0

12

6

16

99

45

97

782

65

0

T2

0

4937

0

11

353

0

0

20

11

0

5

0

3

1

0

0

0

T3

19

0

2462

92

0

178

5

87

167

170

267

72

173

233

80

198

34

T4

32

0

290

4617

0

80

101

1

444

22

148

23

158

145

42

60

0

T5

0

639

0

3

5233

0

7

41

8

2

2

2

6

0

0

0

0

T6

11

0

78

5

1

3652

36

231

0

17

15

633

41

312

90

13

83

T7

95

1

87

225

17

18

5367

20

56

0

0

9

24

40

0

0

0

T8

1

22

22

0

125

139

20

4863

2

30

34

104

60

305

0

0

42

T9

36

10

671

414

1

38

23

66

4137

139

482

200

111

120

16

97

0

T10

3

0

181

7

6

75

0

186

139

4521

700

57

324

1

28

66

21

T11

46

0

304

126

0

72

0

72

308

508

3675

28

211

2

74

166

17

T12

86

0

119

2

0

529

1

72

62

3

37

3626

3

452

171

3

11

T13

0

0

71

61

0

9

3

7

118

333

213

0

3909

22

3

361

0

T14

31

0

597

91

0

494

6

135

147

20

32

370

121

3554

28

182

1

T15

394

0

110

4

0

170

0

23

1

14

22

383

52

94

4309

70

0

T16

5

0

332

257

0

86

0

17

36

75

157

0

427

205

6

4281

15

Grass

75

0

141

0

0

228

0

13

0

1

28

123

22

112

56

61

5432

Row total

6108

5341

4237

6163

5943

5218

5959

5769

6561

6315

5609

5177

5110

5809

5646

5899

6292

Column total

5673

5609

5541

5939

5736

5811

5573

5854

5648

5861

5833

5729

5690

5695

5685

5623

5656

User accuracy %

79.22

92.44

58.11

74.91

88.05

69.99

90.07

84.30

63.05

71.59

65.52

70.04

76.50

61.18

76.32

72.57

86.33

Producer accuracy %

85.30

88.02

44.43

77.74

91.23

62.85

96.30

83.07

73.25

77.14

63.00

63.29

68.70

62.41

75.80

76.13

96.04

  1. Overall accuracy = (73,414/97,156) = 75.5630%; kappa coefficient = 0.7403