How to get image from axes in GUI matlab

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twins
twins on 23 May 2014
Edited: saeed rehman on 14 Dec 2016
Hello I have a question .. I load an image in axes in Matlab GUI , and I want to re-read this image in a variable and use this variable in other function .. What is the function which helps me on it . Thank you
  1 Comment
saeed rehman
saeed rehman on 14 Dec 2016
Edited: saeed rehman on 14 Dec 2016
store loaded image in a variable and Use setappdata and getappdata .
axes(handles.axes2);
image(a);
setappdata(0,'image',a);
%%%
now get this image and load it in anyother axes or whatever u want.
im=getappdata(0,'image');
axes(handles.axes3);
image(im);

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Answers (2)

Mahdi
Mahdi on 23 May 2014
After knowing which axes handle the image is loaded into, you can simple use the getimage function.
  1 Comment
Naman Bansal
Naman Bansal on 27 Jul 2014
This is fine but the problem I'm facing is to get the image after zooming i.e. I firstly loaded the image on axes and then performed the zoom operation. Now I only want the zoomed portion of the image. How can I do that.

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Image Analyst
Image Analyst on 23 May 2014
Try using getframe(). Or get(hAxes, 'CData');
  2 Comments
Image Analyst
Image Analyst on 27 Jul 2014
Naman, just like I told you. Look at this code:
close all;
im=imread('cameraman.tif');
subplot(1,2,1);
imshow(im);
subplot(1,2,2);
imshow(im);
size(im)
zoom(8);
zoomedImage = getframe(); % Get zoomed portion that is visible.
size(zoomedImage.cdata)
figure; % Bring up separate figure.
imshow(zoomedImage.cdata);
Do you see how in the second figure it is only the zoomed, visible portion of the image from figure 1 that was captured and is being displayed? From your post it sounds like you tried getframe() and it did not work for you for some reason. To fix it I'd have to see your code.

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