Table 6 Table showing the difference of Fourier features in zoomed images and those without zoom. The latter were subsequently resampled to equalise their resolution (pixels/cm) with the corresponding zoomed ones, by using bilinear (BLI) or bicubic (BCI) interpolation. Percent difference with zoomed image are also shown. Statistically significant differences are highlighted.
From: Effect of zooming on texture features of ultrasonic images
Fourier feature | Magnification | Feature value (median, interquartile range) | Difference with original (x1) image % | p |
|---|---|---|---|---|
Radial sum | Zoomed | 2,881.53, 2,633.78–3,408.98 | ||
Unzoomed | 2,316.44, 2,011.57–2,730.38 | -19.61 | <0.001 | |
BLI | 3,006.34, 2,464.29–3,358.66 | 4.33 | 0.983 | |
BLC | 2,818.77, 2,357.42–3,324.80 | -2.18 | 0.679 | |
Angular sum | Zoomed | 2,547.76, 2,081.04–3,041.93 | ||
Unzoomed | 1,883.20, 1,599.28–2,428.14 | -26.08 | <0.001 | |
BLI | 2,406.81, 1,964.50–2,908.85 | -5.53 | 0.231 | |
BLC | 2,404.97, 1,995.90–2,667.91 | -5.60 | 0.248 |