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Qualitative results for perceived accuracy (a–c) and personal preference (d–f) for 55 B-scans ranked by observer 1 (a, d), observer 2 (b, e) and observer 3 (c, f) for images acquired by 6-frame averaging (“Ground Truth”), CNN-WGAN, CNN-MSE, BM3D, DD-CDWT and the respective un-processed images (“Raw”). Colour indicates the percentage of images, for the respective image type, in each rank position (where 1=highest rank, 6=lowest rank).
