find mutual information between series of images

Question

talayeh ghodsi 2019-11-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/490233-find-mutual-information-between-series-of-images

评论： talayeh ghodsi 2019-11-10

hi everybody.

I have an image called 'echo'. and series of 16 images called 4-chamber view190...4-chamber view206.

I want to find the mutual information between echo and the series of 16 images to find the maximum mutual information between echo and one of the 16 images.

i have written a for loop but the output is just one scalar for example MI=2. but i need 16 MI outputs to find the maximum of them. could anyone tell me how can i do that?

Image_Address='I:\area finding\10%\';

file_format_Echo='.jpg';

echo=rgb2gray(imread('echo_masked.jpg'))

[m,n] = size(echo)

for num_echo=190:206

prefix_image='4-chamber view';

Image=imread(strcat(Image_Address,prefix_image,num2str(num_echo),file_format_Echo));

Image=imresize(echo,[m,n])

MI=MI2(echo,Image,'Normalized')

end

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Answer 1

Arash Rabbani 2019-11-10

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https://ww2.mathworks.cn/matlabcentral/answers/490233-find-mutual-information-between-series-of-images#answer_400697

在 MATLAB Online 中打开

Hi, why dont you save the MI values inside an array like this:

and then find the location of the maximum value.

Image_Address='I:\area finding\10%\';
file_format_Echo='.jpg';
echo=rgb2gray(imread('echo_masked.jpg'))
[m,n] = size(echo)
for num_echo=190:206
    prefix_image='4-chamber view';
    Image=imread(strcat(Image_Address,prefix_image,num2str(num_echo),file_format_Echo));
    Image=imresize(echo,[m,n])
    MI(num_echo)=MI2(echo,Image,'Normalized')
end
MAX_MI_Location=find(MI==max(MI))