How to proceed with image processing in GUI?
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I have set up a GUI whereby the first push button(Load a MRI image) is to allow the user to select any image. I would like to proceed with image processing using the selected image from the first pushbutton. I have other pushbuttons like 'image enhancement', 'roi detection'. How can I proceed with image processing using the selected image from the first pushbutton?
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Answers (3)
Walter Roberson
on 14 Jan 2016
Below I show proper use of both handles and setappdata
% --- Executes on button press in load_mri.
function load_mri_Callback(hObject, eventdata, handles)
path='G:\FYP2\';
filter='*.png;*.jpg;*.tif;*.png;*.gif';'All Image Files';
[selectedFile, selectedPath]=uigetfile(fullfile(path, filter));
[~, image_name, ~] = basename(selectedFile);
image_file = fullfile(selectedPath, selectedFile);
image_data = imread(image_name);
axes(handles.axes2);
image(image_data);
%image name is small, you can afford to store it in handles
handles.image_name = image_name;
handles.image_file = image_file;
guidata(hObject, handles);
%image content could be big, do not store it in handles
myfig = ancestor(hObject, 'figure');
setappdata(myfig, 'Loaded_MRI_Image', image_data); %save the application data
% --- Executes on button press in enhancement.
function enhanchObjectement_Callback(hObject, eventdata, handles)
myfig = ancestor(hObject, 'figure');
mri = getappdata(myfig, 'Loaded_MRI_Image'); %it is already the image
image_name = handles.image_name;
gray = rgb2gray(mri);
I = imadjust(gray);
imshow(I);
title( sprintf('Contrast adjusted "%s"', image_name) );
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Image Analyst
on 15 Jan 2016
enhancement_Callback is not spelled the same as enhanchObjectement_Callback, so which is it? Which is the right name?
Image Analyst
on 14 Jan 2016
You might try MAGIC: http://www.mathworks.com/matlabcentral/fileexchange/24224-magic-matlab-generic-imaging-component All that stuff is already worked out for you. You just put your analysis code into the function AnalyzeSingleImage. It handles all the rest from listing image names in a listbox to displaying them to batch processing them to sending results to Excel.
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