Table 1 The nine prototypical ILD functions
Seven data normalization methods | The nine prototypical ILD functions (min: 0.0 and max: 100, with ±6 %) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
(A) | (B) | (C) | (D) | (E) | (F) | (G) | (H) | (I) | |
(1) Vn (i, j) = X n (i, j) − μ n | -46/49 | -67/68 | -69/48 | -37/59 | -23/73 | -43/71 | -64/60 | -42/46 | -5.7/8 |
(2) Vn (i, j) = X n (i, j)/max{max{X n (i, j)}} | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 |
(3) Vn (i, j) = X n (i, j)/max{X n (i, j)} | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.01/1 | 0.02/1 | 0.24/1 |
(4) Vn (i, j) = X n (i, j)/σ n | 0.04/2 | 0.02/2 | 0.04/2 | 0.06/2 | 0.04/3 | 0.03/3 | 0.02/2 | 0.1/23 | 0.6/51 |
(5) Vn (i, j) = log2(Xn(i, j)) − log2(μn) | -4.6/1 | -6/1.7 | -5.3/1 | -4/1.3 | -4.3/2 | -4.6/2 | -4.8/1 | -4.4/1 | -1/0.7 |
(6) Vn (i, j) = | 0.1/7 | 0.1/7 | 0.08/7 | 0.09/7 | 0.08/7 | 0.09/7 | 0.09/7 | 0.23/7 | 0.1/7. |
(7) Vn (i, j) = | -1.1/1 | -1.1/1 | -1.8/1 | -1/1.7 | -0.7/2 | -1.3/2 | -1.5/1 | -1.8/1 | -1.4/1 |