How do I display 55x305x4 .mat file as an image in Matlab and save it ?

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saddam abdulwahab 2018-6-7

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评论： Saddam Abdulwahab 2018-6-7

welcome All Matlab users, I have an depth image in .mat file the image 4 channel 55*305*4 ... I have a problem with display it and save it in External file.please,could you help me.

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sloppydisk 2018-6-7

You must really specify what the input channels represent otherwise there is no meaningful way of converting the file and we will just be guessing at what you want.

Saddam Abdulwahab 2018-6-7

I have this file s.mat I need save it as depth image like this image depth.png

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Anton Semechko 2018-6-7

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% Data array
A=Position3DGrid;
% Convert to uint8
I_min=min(A(:));
I_max=max(A(:));
A=uint8(255*(A-I_min)/(I_max-I_min));
% Composite image
n=2; % number of pixels added to when making a boundary between channels; to separate them visually
IM=cell(4,1);
for i=1:4
    im=repmat(A(:,:,i),[1 1 3]);
    if i<4 % boundary
        im=padarray(im,[n 0 0],255,'post');
    end
    IM{i}=im;
end
IM=cell2mat(IM);
IM=padarray(IM,[n n 0],255);
% Save composite image to current directory 
imwrite(IM,'composite image.jpg')
% This is what the composite image looks like
figure, imshow(IM)