From: Effect of zooming on texture features of ultrasonic images
First order statistic | Magnification | Feature value (median, interquartile range) | Difference with original (x1) image % | p |
---|---|---|---|---|
Mean value | Zoomed | 43.67, 33.23–59.62 | ||
Unzoomed | 44.60, 34.06–60.07 | 2.12 | 0.145 | |
BLI | 45.43, 33.98–58.29 | 4.03 | 0.5 | |
BLC | 43.32, 33.51–58.38 | -0.80 | 0.472 | |
Variance | Zoomed | 1,287.35, 800.78–2,083.38 | ||
Unzoomed | 1,294.56, 1,054.95–2,111.79 | 0.56 | 0.349 | |
BLI | 1,334.25, 831.38–2,082.33 | 3.64 | 0.616 | |
BLC | 1,264.28, 852.92–2,058.30 | -1.79 | 0.396 | |
Median value | Zoomed | 34.35, 20.73–48.31 | ||
Unzoomed | 37.41, 22.67–49.98 | 8.90 | 0.043 | |
BLI | 38.65, 24.26–48.22 | 12.51 | 0.349 | |
BLC | 35.09, 21.55–50.40 | 2.16 | 0.913 | |
Mode | Zoomed | 8.00, 0.00–40.25 | ||
Unzoomed | 3.50, 0.00–36.75 | -56.25 | 0.341 | |
BLI | 2.00, 0.00–31.00 | -75.00 | 0.282 | |
BLC | 1.00, 0.00–23.25 | -87.50 | 0.137 | |
Skewness | Zoomed | 1.247, 0.728–1.520 | ||
Unzoomed | 1.201, 0.827–1.478 | -3.72 | 0.616 | |
BLI | 1.188, 0.847–1.460 | -4.76 | 0.879 | |
BLC | 1.240, 0.812–1.484 | -0.58 | 0.913 | |
Energy | Zoomed | 0.014, 0.011–0.027 | ||
Unzoomed | 0.014, 0.011–0.024 | -2.23 | 0.811 | |
BLI | 0.0109, 0.0084–0.0173 | -22.13 | <0.001 | |
BLC | 0.0115, 0.0089–0.0214 | -17.45 | 0.016 | |
Entropy | Zoomed | 4.51, 4.15–4.71 | ||
Unzoomed | 4.52, 4.19–4.72 | 0.33 | 0.879 | |
BLI | 4.70, 4.48–4.98 | 4.24 | <0.001 | |
BLC | 4.68, 4.36–4.87 | 3.80 | <0.001 | |
Kurtosis | Zoomed | 2.06, 1.71–2.49 | ||
Unzoomed | 2.15, 1.76–2.47 | 4.49 | 0.025 | |
BLI | 1.73, 1.71–1.81 | -15.72 | 0.006 | |
BLC | 1.76, 1.72–1.95 | -14.37 | 0.01 |