GUI red, blue, and green channels

Question

Caitlin Schmidt 2019-7-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/472707-gui-red-blue-and-green-channels

回答： Walter Roberson 2019-7-21

I'm working on a problem involving opening an image in a GUI and show it in an axes. I also need to show 3 images for the red, green, and blue channels in three separate axes in the same GUI. I'm having troubling with creating the three other images. Any ideas?

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Answer 1

Walter Roberson 2019-7-21

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https://ww2.mathworks.cn/matlabcentral/answers/472707-gui-red-blue-and-green-channels#answer_384131

在 MATLAB Online 中打开

[filename, filepath] = uigetfile();
if ~ischar(filename); return; end    %user cancel
fullname = fullfile(filepath, filename);
img = imread(fullname);
R = zeros(size(img), class(img));
G = R;
B = R;
R(:,:,1) = img(:,:,1);
G(:,:,2) = img(:,:,2);
B(:,:,3) = img(:,:,3);
imshow(handles.axes_for_RGB, img);
imshow(handles.axes_for_R, R);
imshow(handles.axes_for_G, G);
imshow(handles.axes_for_B, B);