How do you get the ground truth from the dataset

[bhaktikhera1]

How to get ground truth from the dataset? How did you use as a parameter? Example : def binary_dice3d(s,g):

dice score of two 3D volumes

num=np.sum(np.multiply(s, g))
denom=s.sum() + g.sum() 
if denom==0:
    return 1
else:
    return  2.0*num/denom

def sensitivity (seg,ground):

computs false negative rate

num=np.sum(np.multiply(ground, seg ))
denom=np.sum(ground)
if denom==0:
    return 1
else:

return num/denom