You can take a look at this MATLAB function:

https://www.mathworks.com/help/images/ref/normxcorr2.html

Thanks Niloy Sikder ,I had used this function but , this is returning a matrix, but NCC value is a single value in range 0-1. I didn't know how to get this single value from the matrix return by this function.

Then, I think you can use this function:

https://www.mathworks.com/help/images/ref/corr2.html

Thanks Niloy Sikder , but corr2 function in matlab is for correlation coefficient.

Normalized (2-D) cross-correlation (NCC) gives the displacement values pixel-wise in an array. But as you are looking for a single value that would convey the dissimilarities between two images as a whole, you should use the "(2-D Normalized cross) correlation coefficient" value (2-D for image). Please take a look at the conversation below and the comment by Marc Schmieger:

https://www.researchgate.net/post/How_can_one_calculate_normalized_cross_correlation_between_two_arrays

use normxcorr2 function in matlab.

Sanjay Kumar Use the code below in MATLAB.

A=double(imread('image1.png'));

B=double(imread('image2.png'));

NCC = max(max(normxcorr2(A, B)))

Thanks, Subhadeep Koley