|
CS orientation, error mean ± std (deg)
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FT orientation, error mean ± std (deg)
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Wilcoxon signed rank test p-value
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CS circular variance, Pearson’s r, mean ± std
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FT isotropy index, Pearson’s r, mean ± std
|
Wilcoxon signed rank test p-value
|
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Validation set 1
|
15.5774 ± 14.5547
|
21.1937 ± 15.0628
|
2.2755E-11
|
0.3018 ± 0.4325
|
0.3024 ± 0.4251
|
0.8501
|
Validation set 2
|
11.2739 ± 11.9993
|
41.9884 ± 31.2416
|
1.0532E-15
|
0.3574 ± 0.3555
|
−0.0896 ± 0.1343
|
0.0122
|
Validation set 3
|
15.3819 ± 17.3992
|
16.0332 ± 14.1959
|
0.0016
|
0.7192 ± 0.1505
|
0.6086 ± 0.1440
|
7.3242E-04
|
- Absolute errors in degrees (mean ± standard deviation) between mean orientation values estimated by human experts (N = 12 for validation sets 1 and 2, N = 13 for validation set 3) for the images of each validation set (N = 11 for validation set 1, N = 10 for validation sets 2 and 3) and values estimated by CS and FT are shown. Pearson’s linear correlation coefficients (mean ± standard deviation) between anisotropy rankings estimated by human experts (N = 12 for validation sets 1 and 2, N = 13 for validation set 3) and measures of isotropy estimated by CS and FT are also shown for the images of each set (N = 15 for all validation sets). Paired, two-sided Wilcoxon signed rank tests were performed to compare the orientation errors and correlation coefficients of CS and FT and the resulting p-values are given