Dice Similarity coefficient error map for 3D image?

I am want to calculate Dice Similarity Coefficient (DSC) for 3D image and show error map (from 0 to 1). I done it for 2D. But I don't know how to apply it or change for 3D. Could you help me to find the way to calculate DSC for 3D image and display error map in matlab?

Answer 1

[Payam Ahmadvand]

Hi,

It doesn't matter images is 2D or 3D. If you have your segmentation in a logical volume in which 1 indicates inside the segmentation, this code can calculates Dice:

Seg1 = GroundTruthSeg(:);
Seg2 = YourSeg(:);
VoxelsNumber1=sum(Seg1); 
VoxelsNumber2=sum(Seg2);
CommonArea=sum(Seg1 & Seg2); 
Dice=(2*CommonArea)/(VoxelsNumber1+VoxelsNumber2);