dice similarity index between segmented image and ground truth

Helo I have an segmented image , trying to find dice similarity index between the segmented image and ground truth.

Answer 1

[Anand]

How about this:

dice = 2*nnz(segIm&grndTruth)/(nnz(segIm) + nnz(grndTruth))

This expects segIm and grndTruth to be of the same size. They must also be numeric or logical.

[Tabish Raza]

but how to put segIm image value is that whole image

[Image Analyst]

I don't understand. segIm is what he called your final segmented image - your final binary image after all processing has been done. What do you mean by "how to put is that whole image"? There is nothing to put, it is just a variable. And you stick the variable into the equation.

Answer 2

[APOORVA SAFAI]

how to make the two images of same size if they differ?

[Anand]

Use imresize.

[KM Shofuan]

how to calculate (segIm&grndTruth) ? is it a multiplication operation ?

[Diah Junaidi]

(segIm&grndTruth) :

segIm = image that we wanna reference with

grndTruth = image that being reference

just determine what is segIm and grndTruth after you obtain them, just concatenate them (segIm&grndTruth)