MATLAB: Find mutual information between images

image processingsignal processing

hi every body

i have written a code to find the mutual information between one fixe image called 'X' and 33 images called 'Y'. (i have downloaded the MI_GG from https://ch.mathworks.com/matlabcentral/fileexchange/36538-very-fast-mutual-information-betweentwo-images)

but the answer of my code is only one, but it should be 33 values.

how should i change the code?

clc

clear all

close all

surf_read_dir='E:\phd\zahra taati\CT-4chamber\for\x00_68\croped\';

files=dir('E:\phd\zahra taati\CT-4chamber\for\x00_68\croped\*.jpg');

X = rgb2gray(imread('echo.jpg'));

sz=size(X);

for im=1:size(files)

fdir = strcat(surf_read_dir , files(im).name);

slice_im = load(fdir);

Y = rgb2gray(imread(fdir));

YY = imresize(Y,sz);

M = MI_GG(X,YY);

end

Best Answer

You can get useful help from here regarding comparing the features between 2 images:

https://www.mathworks.com/help/vision/ug/use-lbp-features-to-differentiate-images-by-their-texture.html?searchHighlight=compare%202%20images&s_tid=doc_srchtitle

Related Solutions

MATLAB: Problem in writing files

The problem is likely caused by the fact that your images are actually written to a different directory than you think.

I strongly recommend using fullfile rather than trying to concatenate paths and filenames.

Start with something like this:

D = 'E:\phd\zahra taati\extract only heart\crop100-112\';
S = dir(fullfile(D,'*.jpg'));
for k = 1:numel(S)
    F = fullfile(D,S(k).name);
    I = imread(F);
    J = ... do whatever you want with image I
    G = fullfile(D,['cropped',S(k).name]); % you forgot the path here!
    imwrite(J,G);
end

If you want to change the file extension then use fileparts to get the filename, then simply append the desired extension to the name.

MATLAB: Similarity index beetween different size images

One idea can be appying a transform that reduce the bigger image into an image of the same size of the smaller one. Then apply any similarity index that works with same sized images.

Best Answer

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MATLAB: Problem in writing files

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