Figure 1
From: Assessing robustness of radiomic features by image perturbation
Perturbation examples. To perturb an image (blue) and the region of interest mask (orange overlay), the original image is translated, rotated, noised, and has its mask adapted and randomised. Translation and rotation change both the image and its mask, whereas noise only distorts the image. Volume adaptation and contour randomisation change the mask by adding (green overlay) and removing voxels (red overlay). Note that translation and rotation require additional interpolation (not shown).
