Image Processing Problem (Listbox)

I have some problem in the Matlab listbox GUI, how to select several images in listbox and display all these images in axes1, axes2, axes 3 and etc. I don't quite understand about the current images selected (I want to display certain images which I have selected). Hope there is an example to clear my mind. Thanks.

Answer 1

[Geoff Hayes]

Khor - how many axes do you have and how do you decide which image to assign to which axes? Will you always select three images? If you only select two, then does that mean that only axes1 and axes2 are assigned the new image? What happens if you select more images than you have for axes?

Presumably you have a push button that will load your selected images in to your axes. Within the button callback, you could do something like the following

 imageFiles = get(handles.listbox1,'String');   % list of all files from list box
 selectedIdcs = get(handles.listbox1,'Value');  % indices to selected files
 selectedImages = imageFiles(selectedIdcs)      % list of all selected files

Now, you could just iterate over each selected image and show it in the appropriate axes as

 for k=1:min(size(selectedImages,1),3)
     filename = selectedImages{k};
     loadedImage = imread(filename);
     hAxes = handles.axes1;
     if k==2
         hAxes = handles.axes2;
     elseif k==3
         hAxes = handles.axes3;
     end
     image(hAxes, loadedImage);
 end

The above code ensures that at most three images get loaded into the three axes.

[KHOR WEI KOK]

My current GUI has a listbox,a insert pushbutton, a set button,15 axes. I have a total of 24 images from a folder. After I insert this folder and display in listbox, I chose an image (let's call image10 in the middle list of the listbox) to display in one of the axes. Once I select this particular image (image10), I would like to display 'before this particular image'(which it means image3,4,5,6,7,8,9) and 'after this particular image'(which it means image11,12,13,14,15,16,17) in the rest of the axes.

[Image Analyst]

Get the selection and then use setdiff() to get a list of all other indexes that do not include that index. Then loop over them displaying them wherever you want.

imageFiles = handles.listbox1.String;   % list of all files from list box
selectedIndex = handles.listbox1.Value;
otherIndexes = setdiff(1:length(imageFiles), selectedIndex);
for k = otherIndexes 
   % Display them....