Dear Navodini, since the shape of the validation data is very heterogenous (see below), I am wondering if we can also submit a more uniform version of the segmentation masks for validation phase? Shape of validation data: (448, 448, 80): 28 (512, 512, 112): 2 (512, 512, 50): 32 (256, 50, 256): 2 (384, 384, 72): 1 (512, 512, 64): 5 (448, 512, 44): 1 (640, 640, 72): 6 (256, 256, 40): 1 (256, 30, 256): 1 (384, 384, 40): 4 (384, 384, 56): 1 (480, 480, 40): 2 (416, 32, 512): 1 (640, 70, 640): 1 (256, 256, 30): 3 (512, 512, 56): 1 (384, 512, 40): 1 (640, 640, 96): 1 (256, 256, 38): 1 (480, 36, 640): 1 Thanks in advance and best regards Lennart