function M = MI_GG(X,Y)
Computes the mutual information between two quantized images: X and Y.
For Citation: M. Ceccarelli, M. di Bisceglie, C. Galdi, G. Giangregorio, S.L. Ullo, “Image Registration Using Non–Linear Diffusion”, IGARSS 2008.
NOTE: Available memory affects computational efficiency. Very good efficiency is obtained with 8-bit images quantization and 3GB RAM.
X --> first image
Y --> second image (same size of X)
M --> mutual information between X and Y
Generoso Giangregorio (2023). Very fast Mutual Information betweentwo images. (https://www.mathworks.com/matlabcentral/fileexchange/36538-very-fast-mutual-information-betweentwo-images), MATLAB Central File Exchange. Retrieved .
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