--cocahis
    --HE [group]
        --raw [dataset]                  shape=(82, 1037, 1388, 3)    82 RGB images, dtype=uint8
        --sn1 [dataset]                  shape=(82, 1037, 1388, 3)    82 stain normalized RGB images, dtype=uint8
        --sn2 [dataset]                  shape=(82, 1037, 1388, 3)    82 stain normalized RGB images, dtype=uint8
        --train_test_split [attribute]   shape=(82)                   "train" or "test"
        --patient_num [attribute]        shape=(82)                   i={1..19}
        --image_num [attribute]          shape=(82)                   image number of patient on the same index in patient_num
        
    --GT [group]
        --GT1 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT2 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT3 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT4 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT5 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT6 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT7 [dataset]                  shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --GT_majority_vote [dataset]     shape=(82, 1037, 1388)       82 ground truth images, dtype=uint8
        --train_test_split [attribute]   shape=(82)                   "train" or "test"