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Table 5 Table showing the difference of GLDS features in zoomed images and those without zoom. The latter were subsequently resampled to equalise their resolution (pixels/mm) 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

GLDS features Magnification Feature value (median, interquartile range) Difference with original (x1) image % p
Homogeneity Zoomed 0.233, 0.182–0.315   
  Unzoomed 0.191, 0.149–0.258 -18.14 <0.001
  BLI 0.222, 0.186–0.291 -4.83 0.078
  BLC 0.249, 0.186–0.293 6.92 0.5
Contrast Zoomed 43.87, 35.74–69.05   
  Unzoomed 74.70, 61.62–116.23 70.27 <0.001
  BLI 41.96, 33.11–66.14 -4.35 0.003
  BLC 43.22, 31.11–67.69 -1.49 0.679
Energy Zoomed 0.092, 0.075–0.115   
  Unzoomed 0.074, 0.059–0.089 -19.79 <0.001
  BLI 0.095, 0.074–0.111 2.38 0.17
  BLC 0.095, 0.073–0.115 2.21 0.267
Entropy Zoomed 2.63, 2.49–2.84   
  Unzoomed 2.86, 2.75–3.08 8.63 <0.001
  BLI 2.60, 2.49–2.84 -1.25 0.012
  BLC 2.61, 2.48–2.85 -0.65 0.306
Mean Zoomed 4.75, 4.00–6.11   
  Unzoomed 6.24, 5.32–7.87 31.28 <0.001
  BLI 4.62, 3.97–5.98 -2.81 0.003
  BLC 4.65, 3.96–6.07 -2.10 0.845