Transparent Scrollable Overlay Help

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Suki Sandhu
Suki Sandhu 2017-2-24
Hey there, I am working on a GUI through GUIDE and instead of imfuse()'ing the images together, I want to get an overlay so I can adjust the transparency. The imgStackCopy is the original image stack and the savedImageStack is the binary mask stack. I have the following code, but it is very slow and the mask does not disappear while scrolling so the updated one will show for the next slice.
newImageCData = handles.imgStackCopy(:,:,handles.currentSliceNum + scrollUpDown/3);
handles.imageAxes.CData = newImageCData;
handles.currentSliceNum = handles.currentSliceNum + scrollUpDown/3;
set(handles.sliceNumberText, 'String', handles.currentSliceNum);
hold on;
a = imshow(handles.savedImagesStack(:,:,handles.currentSliceNum + scrollUpDown/3));
set(a, 'AlphaData', 0.5);
Is there any way of better overlaying the images together so the transparency can be adjusted and it is fast?

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