MATLAB: How to call the axes into push button in GUI

guiimage processing

Hi, I have an input image and i have loaded into GUI using axes. my code

handles.input_image = double(rgb2gray(imread('Trial_image.jpg')));
axes(handles.in_image);
image(handles.input_image);

The variable name is handles.input_image and the tag name is handles.in_image.

when i call the tag name of the axes to get the image into the push button. it doesnt have the image. The variable has the image but how can i use it in the push button. any ideas? Thanks in advance

Best Answer

To display your image use

imshow(handles.input_image);

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MATLAB: How to call a function with a GUI push button

Matthew - if your image is being displayed in a specific axes (say named axes1) of the GUI, then you can get that data in the other callback as follows

 function pushbutton2_Callback(hObject, eventdata, handles)
 % get the image data
 I = get(get(handles.axes,'Children'),'CData');
 % do the operation on it
 Cell_Recognition(I);

We rely on the fact that the image is the only child on the axes, and so when we call

 get(handles.axes,'Children')

it just returns the graphics handle to the image object. We then get the original image data that is stored in CData.

Try the above and see what happens!

MATLAB: Step-back button in GUI

After the colors have been converted to gray, there is no way to get the colors back. But of course you can store the initial value (image) in a list to which you append the new image after each operation. Then an undo is easy to implement.

% After loading the image
handles.imageList = {imageRGB};
handles.operation = {'original'};
...
% At applying any operation:
image = rgb2gray(image);
handles.imageList{end+1} = image;
handles.operation{end+1} = {'RGB to gray'};

Now an "undo" is:

if numel(handles.imageList) > 1
  image = handles.imageList{end-1};
end

and updating the display, maybe removing the last element from the lists, except you want t "redo".

Best Answer

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MATLAB: How to call a function with a GUI push button

MATLAB: Step-back button in GUI

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