Overlay multiple images in one axes with individual transparency adjustment?
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I have 3 or more images of the same size to be overlaid, each is associated with a sliding bar for transparency (0-1) adjustment in a GUI. So I can display the overlay effect of any selected 2 or more images with adjustable transparency.
One solution is to use multiple axes with identical positions (on top of each other), and put one image in each axes, and use linkaxes(). so I can adjust the alphadata for each axes to achieve this. Can I put three images in one axes? If there's only two images, I can set one image as the transparency data. but how about for more than 2 images?
Also, If I want to add ROIs on top of the images, which is always visible, how to achieve that? using multiple axes, ROI has to be drawn within a specified axes, changing the transparency of that axes will also affect the ROI, which I don't want.
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