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Table 5 Overall accuracy and kappa coefficient of tree species identification based on different feature sets

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

Data sets

WorldView-3

WorldView-2

Overall accuracy %

Kappa coefficient

Overall accuracy %

Kappa coefficient

8 Bands

65.8745

0.6374

76.7831

0.7289

8 MEAs

64.8040

0.6260

76.0773

0.7206

28 PAI1s

57.8338

0.5520

74.7400

0.7050

28 PAI2s

57.8853

0.5525

74.7400

0.7050

28 PAI3s

70.6091

0.6877

76.4364

0.7248

Feature set 1

65.3629

0.6320

79.0862

0.7557

Feature set 2

65.6861

0.6354

79.1357

0.7563

Feature set 3

74.6850

0.7310

80.4111

0.7712