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Table 3 Constant m and specific bγ of polygon area indices extracted by different band combinations when the second and third algorithms were implemented on the basis of WorldView-3

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

Calculation form of PAI

Constant m

Specific bγ

PAI 1 to 2

0.07398

b1

PAI 1 to 3

0.07398

b1

PAI 1 to 4

0.07398

b1

PAI 1 to 5

0.06768

b5

PAI 1 to 6

0.06768

b5

PAI 1 to 7

0.06768

b5

PAI 1 to 8

0.06768

b5

PAI 2 to 3

0.07569

b2

PAI 2 to 4

0.07569

b2

PAI 2 to 5

0.06768

b5

PAI 2 to 6

0.06768

b5

PAI 2 to 7

0.06768

b5

PAI 2 to 8

0.06768

b5

PAI 3 to 4

0.07672

b4

PAI 3 to 5

0.06768

b5

PAI 3 to 6

0.06768

b5

PAI 3 to 7

0.06768

b5

PAI 3 to 8

0.06768

b5

PAI 4 to 5

0.06768

b5

PAI 4 to 6

0.06768

b5

PAI 4 to 7

0.06768

b5

PAI 4 to 8

0.06768

b5

PAI 5 to 6

0.06768

b5

PAI 5 to 7

0.06768

b5

PAI 5 to 8

0.06768

b5

PAI 6 to 7

0.13462

b6

PAI 6 to 8

0.13462

b6

PAI 7 to 8

0.18017

b7