HOW TO CALCULATED THE DICE SIMILARITY

Hi all, I want to calculate the Dice Similarity Coefficient between the origional images and binary images.

this below is origional images.

%% first, read the origional images
clc
clear all
dataSetDir = fullfile('C:\Users\Akmal\Desktop\I-131 256 28.02.2020\I-131 SPECT NEMA VALIDATION 01112019 256X256 26.09.2021 petang');
imageDir = fullfile(dataSetDir,'Image');

imds = imageDatastore(imageDir);
% view data set images origional
figure
for i = 1:23
    subplot(5,5,i)
    I = readimage(imds,i);
    imshow(I)
    title('training labels')
end

this code below is binary images after segmentation

%% second, read the binary images after segmentation
dataSetDir1 = fullfile('C:\Users\Akmal\Desktop\I-131 256 28.02.2020\I-131 SPECT NEMA VALIDATION 01112019 256X256 26.09.2021 petang');
imageDir1 = fullfile(dataSetDir1,'bnwaftersegmentation');

imds1 = imageDatastore(imageDir1);
% view data set images origional
figure
for ii = 1:23
    subplot(5,5,ii)
    II = readimage(imds1,ii);
    imshow(II)
    title('binary labels')
end

then i run this code for calculate the dice similarity, but got error

similarity = dice(I, II);

Error using dice (line 117)
Expected input number 1, A, to be one of these types:

logical, double, categorical

Instead its type was uint8.

ANYONE CAN HELP ME??

Answer 1

[yanqi liu]

similarity = dice(logical(I), logical(II));